Exploitation of bistatic doppler measurements in multistatic tracking

The exploitation of bistatic Doppler measurements for multistatic tracking is considered. It is found through simulation, that, while the velocity estimation of the standard extended Kalman filter is improved in monostotic situations and multistatic situations where measurement errors are small, a degradation in performance is observed in multistatic situations where the measurement errors are realistically large. A bistatic modification to the alternate EKF of Bizup and Brown (2003) is proposed as a means of exploiting bistatic Doppler measurements in realistic multistatic situations. Simulation results confirm that the proposed filter outperforms the standard EKF and can produce significantly improved target velocity estimates when Doppler measurements are exploited in multistatic applications.