Abstract

Hyperbolic frequency modulated (HFM) waveforms offer detection performance that is “Doppler insensitive”- relatively unaffected by target range-rate-in both narrowband and wideband transmissions. They have been applied in radar; but more they are particularly useful in sonar where the wideband Doppler insensitivity is especially prized. However, Doppler insensitivity does come hand in hand with a range bias, which would significantly degrade the tracking performance. In this paper, we model the range biases as a function of range-rate, and then utilize it to calibrate the measurement equation in target tracking. By doing so, the tracking performance can be considerably improved.

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