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WAAS Performances: Difference between revisions

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# WAAS Performance Requirements for Non-Precision Approach are summarized in the following table:
# WAAS Performance Requirements for Non-Precision Approach are summarized in the following table:
{| class="wikitable" align="center"
! Performance Requirement
! Total System
! Navigation System
! WAAS Signal-in-Space
! Airborne
|-
! Availability
| 0.999
| 0.999
| 0.999
| Not Specified (N/S)
|-
| '''Accuracy''' <br /> 95% Horizontal Position <br /> 99.999% Horizontal Position <br /> 95% Vertical Position <br /> 95% Pseudorange
|  <br /> N/S <br /> N/S <br /> N/A <br /> N/A 
|-
| '''Pacific Ocean Region (POR)''' <br />''Ceased WAAS transmissions''
|NMEA #47 / PRN #134
|178°E
|-
| '''Atlantic Ocean Region-West''' <br />''Ceased WAAS transmissions''
|NMEA #35 / PRN #122
|142°W
|}
# WAAS Performance Requirements for Precision Approach are summarized in the following table:
# WAAS Performance Requirements for Precision Approach are summarized in the following table:



Revision as of 15:01, 20 June 2011


WAASWAAS
Title WAAS Performances
Author(s) GMV.
Level Basic
Year of Publication 2011
Logo GMV.png


The Wide Area Augmentation System (WAAS) is an GPS Augmentation system developed by the Federal Aviation Administration (FAA), with the goal of improving its accuracy, integrity, and availability. Essentially, WAAS is intended to enable aircraft to rely on GPS for all phases of flight, including precision approaches to any airport within its coverage area.

WAAS Performances

Performances are usually described in terms of accuracy, integrity, availability and continuity. The WAAS specification Performance Requirements[1] are different depending on the phase of the flight: en route through 1) Non-precision approach (NPA) and 2) Precision Approach.

  1. WAAS Performance Requirements for Non-Precision Approach are summarized in the following table:
Performance Requirement Total System Navigation System WAAS Signal-in-Space Airborne
Availability 0.999 0.999 0.999 Not Specified (N/S)
Accuracy
95% Horizontal Position
99.999% Horizontal Position
95% Vertical Position
95% Pseudorange

N/S
N/S
N/A
N/A
Pacific Ocean Region (POR)
Ceased WAAS transmissions
NMEA #47 / PRN #134 178°E
Atlantic Ocean Region-West
Ceased WAAS transmissions
NMEA #35 / PRN #122 142°W
  1. WAAS Performance Requirements for Precision Approach are summarized in the following table:

Notes

References

  1. ^ FAA.Specification for the Wide Area Augmentation System(WAAS). FAA-E- 2892b. August 13, 2001.