Frequency-Modulation Continuous-Wave (FM CW) Real Time RADALT Tester

Description

The purpose of the system is to test the Radio altimeter for its altitude range profile along with the different pitch & roll conditions for selected terrain.

Presently fixed delay line is being used for bench testing and no test equipment is available for testing variable altitude along with different pitch & roll conditions for selected terrain.

The test equipment shall simulate the terrain reflected signal spectrum (echo spectrum) with respect to the FMCW signal transmitted from the RAM incorporating the altitude delay, spectrum as per pitch & roll condition and terrain attenuation. 

The simulated echo is fed to the RAM receiver for processing and display the height programmed in order to verify the functionality of the RAM.