Radar/sonar acceleration estimation with linear-period modulated waveforms
Abstract
Doppler and acceleration tolerance of wideband LPM/HFM (linear period-modulated, hyperbolic frequency-modulated) and linear FM signals are compared. A bank of filters matched to frequency-shifted versions of a wideband LPM/HFM transmission system yields a joint maximum-likelihood estimate of range and acceleration and avoids acceleration-induced degradation in detection performance. Analytical and neurophysiological results suggest that such processing can be used in bat echolocation for detection and classification of insect wing motion, since wideband LFM waveforms are much less Doppler-tolerant than HFM waveforms but have greater acceleration tolerance.
- Publication:
-
IEEE Transactions on Aerospace Electronic Systems
- Pub Date:
- November 1990
- DOI:
- 10.1109/7.62244
- Bibcode:
- 1990ITAES..26..914A
- Keywords:
-
- Electromagnetic Acceleration;
- Frequency Modulation;
- Radar Targets;
- Signal Processing;
- Sonar;
- Matched Filters;
- Pulse Doppler Radar;
- Synthetic Aperture Radar;
- Waveforms;
- Communications and Radar