deramp
nounEtymology From de- + ramp.
1
A process for cleaning up electronic signals such as radar, in which a received signal is mixed with a reference signal in order to highlight differences in frequencies.
- In the deramp process, the principle of continuous radar with a linearly frequency-modulated wave is applied to a pulsed radar.2001, Philippe Lacomme, Air and Spaceborne Radar Systems: An Introduction, →ISBN, page 223:
- Deramp processing entails mixing (i.e., multiplying) the return signal with two sinusoidal carriers of frequency fc and then low-pass-filtering the two resulting signals.2003, Ronald G. Driggers, Encyclopedia of Optical Engineering, →ISBN:
1 more example
- The trick with full deramp processing is to mix the echo with a replica of the transmitted chirp signal rather than with a fixed frequency tone (figure 4).2012, Robin A. Vaughan, Microwave Remote Sensing for Oceanographic and Marine Weather-Forecast Models, →ISBN, page 54: