Aneroid altimeters 2 Meteorological instruments 2 Radio altimeters Code-modulation 1 Codes (symbols) 1 Cross-correlations 1 Environmental issues 1 Flat-topped multi-Gaussian beam 1 Gages 1 Gaussian distribution 1 Geodesy 1 Geodetic Vertical Datum 1 Geodetic satellites 1 Global warming 1 Impulse response 1 Laser altimeter 1 Modulation 1 Modulation techniques 1 Multi-mission satellites 1 Performance 1 Potential impacts 1 Pseudorandom noise codes 1 Pulse broadening 1 Pulse broadening effect 1 Remote sensing 1 Return-to-zero 1 Satellite Altimeter 1 Satellite altimeter 1 Sea Level Rise 1 Sea level 1