In CAE OAA Book11-Radio Navigation Chapter-18 Page-318, under GPS Error, "The optimum position for the antenna is on top of the fuselage close to the aircraft's centre of gravity".
In the FCOM of A320, GPS(MMR) Antenna are situated in the front of the fuselage
My questions are:
- Why are all GPS Antenna situated on top of fuselage ?. (Is it because of satellite reception)
- Why is the GPS (MMR) antenna situated in the front top of the fuselage ?.
- Why GPS antenna should be close to aircraft's CG ?.
- Why are there 2 GPS Antenna ?. (Is it because of redundancy or because faster lock-in?.)