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- What is the difference between GPS, GNSS and RNAV?
GNSS is an umbrella term that encompasses GPS as well as other nations' satellite systems that achieve essentially the same capability RNAV is the aircraft capability that allows you to navigate from point to point, defined by Latitude Longitude and independent of any ground-based system
- gnss - What is GPS HIL in laymans terms? - Aviation Stack Exchange
5 GNSS Horizontal Integrity Limit Horizontal Protection Level is a measure of GNSS position error integrity that's very important in RNP operations and RAIM, but it has an obtuse definition in aviation regulations like DO-229D that's hard to apply in practice: [HPL] describes the region assured to contain the indicated horizontal position
- gnss - How is quantum technology thought to provide a potential . . .
Regarding GNSS navigation vulnerability, the targeted system is an improved inertial navigation system, more precise than GNSS, not relying on radio signals, with a cost and a size comparable to a GNSS receiver Such system is not currently operational Why such systems are required for the future, and how they work is detailed below
- Why RNAV SIDs and STARs are RNAV 1 instead of RNP 1?
First of all, an RNP 1 procedure requires a GPS GNSS And as you have said, it requires an inbuilt navigation monitoring and an alerting system On the other hand, an RNAV 1 procedure does not In RNAV 1 you can get navigational aid from the IRS VOR DME or IRS DME DME The SIDs and STARs can either be RNAV 1 or RNP 1 RNAV 1 is the system introduced at the start of performance based
- What is the geoid undulation used for in aviation?
The way the altitude is computed is: GNSS determines a 3D position from satellites, expressed as x,y,z in a Cartesian Earth centered frame The position is converted into latitude, longitude and h using the ellipsoid model and a polar frame Optionally H is computed from h using the geoid model Wording used in aviation for GNSS altitudes
- gnss - how can I verify the aircraft GPS is what TSO? - Aviation Stack . . .
That's usuful source, but looks that 2 3 explains how to check what version of GPS the aircraft equip, not specifically mention how to check which TSO-C equipment the GPS is
- How does WAAS improve the accuracy of the GPS?
A GNSS receiver use the time-stamps and other data from the navigation message to determine: The satellite position when the current subframe was sent using the orbital parameters and the departure time known from the previous subframe The distance between the satellite and the receiver from the time of departure and the time of arrival
- gnss - What are satellite time, GPS time, and UTC time? - Aviation . . .
What is the difference between Satellite time, GPS time and UTC time? How are these calculated from one another?
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