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Generic Receiver Description
| Receivers | |
|---|---|
| Title | Generic Receiver Description |
| Author(s) | GMV |
| Level | Basic |
| Year of Publication | 2011 |
GNSS receivers process the L-band Signals In Space (SIS) coming from the GNSS satellites.
The generic building blocks of a generic GNSS Receiver architecture are:
- Antenna
- Front end
- Baseband Processing
- Application Processing
The Signals In Space (SIS) arriving at the antenna are down-converted and digitized in the front end block, and the sampled signal is fed onto the signal processing blocks. At this point, the receiver tracks each signal using dedicated channels running in parallel, where typically each channel tracks one signal (i.e. for single frequency users, each channel tracks one satellite), providing pseudo-range and phase measurements, as well as navigation data and additional signal information (such as C/N0).
In the application processing block, the receiver may use the incoming information for different purposes, from computing its own position and velocity, to performing time transfer, or simply collecting data to be post-processed in the ground stations. For a wider discussion on application specifics see GNSS applications. In addition to processing the SIS, GNSS receivers may also use aiding information to enhance their solution performance. There are various architectural solutions to cope with aiding information: in fact, this information can be used potentially at any block of the receiver. As an example, when using Inertial Navigation Systems (INS), the sensor information is usually used in the application processing block (although it could also be used as feedback to the baseband processing block for improved performance).
This section tackles the basic functions of the standalone GNSS Receiver.
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For a detailed description of a generic receiver, please visit the following links: