Dynamics and signal processing algorithms for high frequency of recurrence radar modes
Abstract
The dynamics problem in the processing of signals is particularly difficult in the case of high frequency of recurrence (HFR) radar modes. Reception dynamics and necessary signal processing are defined and a typical case is evaluated. The effects of quantification are then analyzed at the various stages of signal processing (coding, rejection filtering, Fourier transformation). It is shown that the quantification noise depends, to a large extent, on the processing algorithms utilized. The presence of a ground echo rejection filter can directly increase the truncation problems owing to the elements situated after the filter. Likewise, the various algorithms used to compute the Fourier transform (fast Fourier transform or Winograd Fourier transform) function very differently vis-a-vis the truncations carried out with the operators. Therefore, in the selection of processing algorithms, it is necessary to consider, not only their performances with regard to the number of elementary operations, but also their sensitivity to quantification noise.
- Publication:
-
In AGARD Multifunction Radar for Airborne Applications 6 p (SEE N87-18721 11-32
- Pub Date:
- July 1986
- Bibcode:
- 1986mraa.agarR....L
- Keywords:
-
- Algorithms;
- Radar;
- Radar Echoes;
- Signal Processing;
- Fourier Transformation;
- Signal Encoding;
- Communications and Radar