Abstract
This article presents the study and implementation on real signals of a delay and Doppler differential estimator: ‘‘The differential Doppler compensated cross correlator’’ (DDCC), with application on target motion analysis (TMA). After a brief review of degradation caused by a differential Doppler on the conventional cross correlator output signal, the DDCC performance improvement is demonstrated in detection (signal to noise ratio) and estimation (measurement accuracy) compared to the conventional cross correlator with finally the test of a DDCC implementation on simulated and real signals. Analysis of theoretical, simulated, and real performance of this system demonstrates that it reaches the Cramer–Rao bounds. The measurement accuracy obtained enables the use of this system within a modern method of TMA where the state vector estimation is realized by batch processing of measurement sets with a maximum-likelihood method. The final and most important part of this paper corresponds to various experimental results, fully demonstrating the excellent behavior of this system in real conditions.
Published Version
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