deramp

verb

1. (transitive)To 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”

noun

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.”

   “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.”

   “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).”