Gnss | search
Click here to view Gnss news from 60+ newspapers.
Bookmark or Share- gnss - Why don't planes (mostly airliners) primarily use GPS for ...Some regulations recommend low end-to-end latency. AC 20-165 for ADS-B recommends total measurement-to-transmission latency of less than 2 seconds, and "uncompensated latency" (e.g. after extrapolation) of less than 0.6 seconds. You bring up lots of other good points like that regulations sometimes require backup in case of loss of GNSS ...
- gnss - Can a pilot use their GPS/FMS to fly a VOR or NDB approach ...In the US they can (Effective: May 26, 2016). This change allows for the use of a suitable RNAV system as a means to navigate on the final approach segment of an instrument approach procedure (IAP) based on a VOR, TACAN, or NDB signal.
- 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 - How does Kalman filtering work in inertial navigation systems ...A Kalman filter is used on all kinds of IRU's and INS's, even with airspeed information as in an ADIRU. A Kalman filter is just a general method (and a very useful one) for state estimation and sensor fusion, which is exactly what's going on in an INS system.
- gnss - What is GPS HIL in layman's terms? - Aviation Stack ExchangeGNSS 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.
More
