deramp

present singular third person deramps · participle present deramping · participle past deramped · past deramped

1. transitiveTo remove (goods or containers) from a railroad flatcar using special equipment.
2. To use a deramp process in order to clean up an electronic signal.

   a phase deramping function

plural deramps

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

   2 more examples

   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

   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