https://gssc.esa.int/navipedia/index.php?action=history&feed=atom&title=Carrier_phase_ambiguity_fixing_with_two_frequencies
Carrier phase ambiguity fixing with two frequencies - Revision history
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https://gssc.esa.int/navipedia/index.php?title=Carrier_phase_ambiguity_fixing_with_two_frequencies&diff=12250&oldid=prev
Jaume.Sanz at 07:37, 5 April 2013
2013-04-05T07:37:47Z
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<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> </div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>:This ambiguity estimate has the advantage that <ins style="font-weight: bold; text-decoration: none;">it </ins>can be obtained separately for each measurement, <ins style="font-weight: bold; text-decoration: none;">easily, thanks to the enlargement of the ambiguity spacing</ins>. <ins style="font-weight: bold; text-decoration: none;">Under moderate receiver noise and multipath conditions</ins>, <ins style="font-weight: bold; text-decoration: none;">a few minutes should be enough to fix </ins>the <ins style="font-weight: bold; text-decoration: none;">wide-lane ambiguity</ins>.</div></td></tr>
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Jaume.Sanz
https://gssc.esa.int/navipedia/index.php?title=Carrier_phase_ambiguity_fixing_with_two_frequencies&diff=11563&oldid=prev
Carlos.Lopez at 11:25, 23 February 2012
2012-02-23T11:25:41Z
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Carlos.Lopez
https://gssc.esa.int/navipedia/index.php?title=Carrier_phase_ambiguity_fixing_with_two_frequencies&diff=10950&oldid=prev
Jaume.Sanz at 16:21, 1 February 2012
2012-02-01T16:21:49Z
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>The [[WARTK Fundamentals|WARTK]] technique has <del style="font-weight: bold; text-decoration: none;">been </del>proved that accurate ionospheric corrections can be computed from the measurements gathered from permanent reference stations networks with similar baselines as SBAS ([[WAAS General Introduction|WAAS]], [[EGNOS General Introduction|EGNOS]], …) networks. Such highly accurate ionosphere allows the carrier phase ambiguity fixing over a wide area. In this way, the WARTK technique can allow to extend the RTK ambiguity fixing from local area to wide-area, i.e., at continental scale. See more details in the following references [Hernandez-Pajares et al., 2010]<ref> [Hernandez-Pajares et al., 2010] Hernandez-Pajares, M., Juan, M., Sanz, J.,Aragon-Angel, A., Samson, J., Tossaint, M., Odijk, D., Teunissen, P.,De Bakker, P., Verhagen, S. and Van der Marel, H., 2010. Wide-Area RTK. InsideGNSS (March/April 2010). 5(2), pp. 36-46.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>The [[WARTK Fundamentals|WARTK]] technique has proved that accurate ionospheric corrections can be computed from the measurements gathered from permanent reference stations networks with similar baselines as SBAS ([[WAAS General Introduction|WAAS]], [[EGNOS General Introduction|EGNOS]], …) networks. Such highly accurate ionosphere allows the carrier phase ambiguity fixing over a wide area. In this way, the WARTK technique can allow to extend the RTK ambiguity fixing from local area to wide-area, i.e., at continental scale. See more details in the following references [Hernandez-Pajares et al., 2010]<ref> [Hernandez-Pajares et al., 2010] Hernandez-Pajares, M., Juan, M., Sanz, J.,Aragon-Angel, A., Samson, J., Tossaint, M., Odijk, D., Teunissen, P.,De Bakker, P., Verhagen, S. and Van der Marel, H., 2010. Wide-Area RTK. InsideGNSS (March/April 2010). 5(2), pp. 36-46.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div></ref>, [Hernandez-Pajares et al., 2003a] <ref>[Hernandez-Pajares et al., 2003a] Hernandez-Pajares, M., Juan, J., Sanz, J. and Colombo, O., 2003a. Impact of real-time ionospheric determination on improving precise navigation with Galileo and next-generation GPS. Journal of the Institute of Navigation.</ref> and [Hernandez-Pajares et al., 2003b]<ref> [Hernandez-Pajares et al., 2003b] Hernandez-Pajares, M., Juan-Zornoza, J., Sanz-Subirana, J. and Colombo, O., 2003b. Feasibility of Wide-Area Subdecimeter Navigation With GALILEO and Modernized GPS. IEEE Transactions on Geoscience and Remote Sensing. 41(9), pp. 2128-2131.</ref>. </div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div></ref>, [Hernandez-Pajares et al., 2003a] <ref>[Hernandez-Pajares et al., 2003a] Hernandez-Pajares, M., Juan, J., Sanz, J. and Colombo, O., 2003a. Impact of real-time ionospheric determination on improving precise navigation with Galileo and next-generation GPS. Journal of the Institute of Navigation.</ref> and [Hernandez-Pajares et al., 2003b]<ref> [Hernandez-Pajares et al., 2003b] Hernandez-Pajares, M., Juan-Zornoza, J., Sanz-Subirana, J. and Colombo, O., 2003b. Feasibility of Wide-Area Subdecimeter Navigation With GALILEO and Modernized GPS. IEEE Transactions on Geoscience and Remote Sensing. 41(9), pp. 2128-2131.</ref>. </div></td></tr>
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Jaume.Sanz
https://gssc.esa.int/navipedia/index.php?title=Carrier_phase_ambiguity_fixing_with_two_frequencies&diff=10949&oldid=prev
Jaume.Sanz at 16:20, 1 February 2012
2012-02-01T16:20:24Z
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>:For long baselines, an accurate ionospheric correction estimate <math>\Delta \nabla \widehat{I}</math> is needed to allow the user to fix the ambiguity by rounding from (4). Notice that, once the ambiguity <math>N_W</math> is fixed, being the carrier measurement noise of few millimetres, the main contribution to the rounding error is from the <math>\widehat{\Delta \nabla I}</math> term. Notice also that its accuracy must be better than <math>\frac{\lambda_1-\lambda_2}{2}</math> to allow the integer rounding. In the case of the Galileo E1 and E5b signals, this accuracy threshold is <math>\frac{\lambda_2-\lambda_1}{2}=2.9\,cm</math>, (see Table <del style="font-weight: bold; text-decoration: none;">1in </del>the article [[Carrier phase ambiguity fixing with three frequencies]]). For the of L1 and L2 GPS signals, it is <math>\frac{\lambda_2-\lambda_1}{2}=2.7cm</math>, see table in the article [[Combination of GNSS Measurements]]).</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>:For long baselines, an accurate ionospheric correction estimate <math>\Delta \nabla \widehat{I}</math> is needed to allow the user to fix the ambiguity by rounding from (4). Notice that, once the ambiguity <math>N_W</math> is fixed, being the carrier measurement noise of few millimetres, the main contribution to the rounding error is from the <math>\widehat{\Delta \nabla I}</math> term. Notice also that its accuracy must be better than <math>\frac{\lambda_1-\lambda_2}{2}</math> to allow the integer rounding. In the case of the Galileo E1 and E5b signals, this accuracy threshold is <math>\frac{\lambda_2-\lambda_1}{2}=2.9\,cm</math>, (see Table <ins style="font-weight: bold; text-decoration: none;">1 in </ins>the article [[Carrier phase ambiguity fixing with three frequencies]]). For the of L1 and L2 GPS signals, it is <math>\frac{\lambda_2-\lambda_1}{2}=2.7cm</math>, see table in the article [[Combination of GNSS Measurements]]).</div></td></tr>
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Jaume.Sanz
https://gssc.esa.int/navipedia/index.php?title=Carrier_phase_ambiguity_fixing_with_two_frequencies&diff=10948&oldid=prev
Jaume.Sanz at 16:18, 1 February 2012
2012-02-01T16:18:37Z
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>:This is the approach applied in the <del style="font-weight: bold; text-decoration: none;">[[</del>RTK<del style="font-weight: bold; text-decoration: none;">]] </del>ambiguity fixing technique.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>:This is the approach applied in the RTK ambiguity fixing technique.</div></td></tr>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
</table>
Jaume.Sanz
https://gssc.esa.int/navipedia/index.php?title=Carrier_phase_ambiguity_fixing_with_two_frequencies&diff=10947&oldid=prev
Jaume.Sanz at 16:18, 1 February 2012
2012-02-01T16:18:07Z
<p></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 16:18, 1 February 2012</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l70">Line 70:</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>:This is the approach applied in the RTK ambiguity fixing technique.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>:This is the approach applied in the <ins style="font-weight: bold; text-decoration: none;">[[</ins>RTK<ins style="font-weight: bold; text-decoration: none;">]] </ins>ambiguity fixing technique.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
</table>
Jaume.Sanz
https://gssc.esa.int/navipedia/index.php?title=Carrier_phase_ambiguity_fixing_with_two_frequencies&diff=10946&oldid=prev
Jaume.Sanz at 16:16, 1 February 2012
2012-02-01T16:16:43Z
<p></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 16:16, 1 February 2012</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l48">Line 48:</td>
<td colspan="2" class="diff-lineno">Line 48:</td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>:Notice that, once the <math>\Delta \nabla B_C</math> ambiguity is fixed, thence a double-differenced measurement two orders of magnitude accurate than the code (typically) is available to navigate. This allows to achieve centimetre level of positioning accuracy.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>:Notice that, once the <math>\Delta \nabla B_C</math> ambiguity is fixed, thence a double-differenced measurement two orders of magnitude <ins style="font-weight: bold; text-decoration: none;">more </ins>accurate than the code (typically) is available to navigate. This allows to achieve centimetre level of positioning accuracy.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
</table>
Jaume.Sanz
https://gssc.esa.int/navipedia/index.php?title=Carrier_phase_ambiguity_fixing_with_two_frequencies&diff=10945&oldid=prev
Jaume.Sanz at 16:11, 1 February 2012
2012-02-01T16:11:59Z
<p></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 16:11, 1 February 2012</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l28">Line 28:</td>
<td colspan="2" class="diff-lineno">Line 28:</td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>:when an estimate of the ambiguity <math>\Delta \nabla {\hat B}_C</math> accurate enough is available. This estimate <math>\Delta \nabla \hat{B}_C</math> can be computed as in the previous section <del style="font-weight: bold; text-decoration: none;">([[Code and Carrier based positioning </del>(PPP<del style="font-weight: bold; text-decoration: none;">)]]</del>), floating the <math>B_C</math> ambiguities in the Kalman filter. </div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>:when an estimate of the ambiguity <math>\Delta \nabla {\hat B}_C</math> accurate enough is available. This estimate <math>\Delta \nabla \hat{B}_C</math> can be computed as in the previous section (PPP), floating the <math>B_C</math> ambiguities in the Kalman filter. </div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
</table>
Jaume.Sanz
https://gssc.esa.int/navipedia/index.php?title=Carrier_phase_ambiguity_fixing_with_two_frequencies&diff=10944&oldid=prev
Jaume.Sanz at 16:11, 1 February 2012
2012-02-01T16:11:11Z
<p></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 16:11, 1 February 2012</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l28">Line 28:</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>:when an estimate of the ambiguity <math>\Delta \nabla {\hat B}_C</math> accurate enough is available. This estimate <math>\Delta \nabla \hat{B}_C</math> can be computed as in the previous section ([[PPP]]), floating the <math>B_C</math> ambiguities in the Kalman filter. </div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>:when an estimate of the ambiguity <math>\Delta \nabla {\hat B}_C</math> accurate enough is available. This estimate <math>\Delta \nabla \hat{B}_C</math> can be computed as in the previous section ([[<ins style="font-weight: bold; text-decoration: none;">Code and Carrier based positioning (</ins>PPP<ins style="font-weight: bold; text-decoration: none;">)</ins>]]), floating the <math>B_C</math> ambiguities in the Kalman filter. </div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
</table>
Jaume.Sanz
https://gssc.esa.int/navipedia/index.php?title=Carrier_phase_ambiguity_fixing_with_two_frequencies&diff=10943&oldid=prev
Jaume.Sanz at 16:07, 1 February 2012
2012-02-01T16:07:51Z
<p></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 16:07, 1 February 2012</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l28">Line 28:</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>:when an estimate of the ambiguity <math>\Delta \nabla {\hat B}_C</math> accurate enough is available. This estimate <math>\Delta \nabla \hat{B}_C</math> can be computed as in the previous section (PPP), floating the <math>B_C</math> ambiguities in the Kalman filter. </div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>:when an estimate of the ambiguity <math>\Delta \nabla {\hat B}_C</math> accurate enough is available. This estimate <math>\Delta \nabla \hat{B}_C</math> can be computed as in the previous section (<ins style="font-weight: bold; text-decoration: none;">[[</ins>PPP<ins style="font-weight: bold; text-decoration: none;">]]</ins>), floating the <math>B_C</math> ambiguities in the Kalman filter. </div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
</table>
Jaume.Sanz