A coherent frequency-bearing tracker
Abstract
The passive measurement of target bearing can be achieved by estimating the phase difference between spatially separated observations of a narrow-band signal. The estimation of this phase difference requires algorithms to track variations in received frequency and the phase difference. This paper presents such an algorithm: a coherently coupled frequency-bearing tracker (CCFBT). The CCFBT is derived from extended Kalman filter theory. A linearized covariance analysis predicts performance above threshold, and an approximate rule predicts threshold. Simulation results verify the covariance analysis and threshold predictions.
- Publication:
-
EASCON 1981; Electronics and Aerospace Systems Conventions
- Pub Date:
- 1981
- Bibcode:
- 1981easc.conf..291O
- Keywords:
-
- Algorithms;
- Bearing (Direction);
- Coherent Radiation;
- Phase Locked Systems;
- Tracking Filters;
- Covariance;
- Kalman Filters;
- Performance Prediction;
- Phase Error;
- Signal To Noise Ratios;
- Communications and Radar