Multipath fluctuation effects in track-while-scan radar
Abstract
A theoretical model of diffuse multipath reflections from rough surfaces is applied to the prediction of multipath power distributions in radar coordinates: elevation angle, time delay, and Doppler frequency. These distributions are used to predict radar tracking errors in elevation angle, for both monopulse and scanning antenna systems, and typical results are presented. These show a small increase in tracking error for scanning systems, on radially approaching targets, caused by sensitivity of these trackers to amplitude scintillation of the composite direct-plus-multipath signal. Effects of knife-edge diffraction and of vegetation are briefly considered.
- Publication:
-
IEEE Transactions on Aerospace Electronic Systems
- Pub Date:
- November 1979
- DOI:
- 10.1109/TAES.1979.308759
- Bibcode:
- 1979ITAES..15..754B
- Keywords:
-
- Error Analysis;
- Multipath Transmission;
- Position Errors;
- Radar Scanning;
- Radar Tracking;
- Tracking Radar;
- Doppler Effect;
- Elevation Angle;
- Frequency Shift;
- Monopulse Antennas;
- Steerable Antennas;
- Time Lag;
- Wave Diffraction;
- Communications and Radar