Digital correction of analog signal processing errors
Abstract
A radar using a pulse compression system where the transmitted pulse is digitally generated and digitally compressed makes it possible to compensate for the non-ideal transfer function of the analog parts of the system. Correction can be applied either by modifying the frequency response of the matched filter or by digitally pre-distorting the transmitted pulse. Some practical aspects concerning the implementation of the pre-distortion are discussed, and some methods for deriving the pre-distorted signal are proposed. These methods are evaluated by computing the resulting peak and integrated sidelobe ratio when different transfer functions are considered. The results show that pre-distortion can compensate for non-ideal transfer functions and thereby improve the system performance.
- Publication:
-
Radar 89, Volume 1
- Pub Date:
- 1989
- Bibcode:
- 1989rada....1..313N
- Keywords:
-
- Error Correcting Devices;
- Matched Filters;
- Pulse Compression;
- Pulse Radar;
- Transfer Functions;
- Digital Radar Systems;
- Fourier Transformation;
- Communications and Radar