A tunable detector for distributed targets when signal mismatch occurs

Abstract

Aiming at the problem of distributed target detection when there is signal mismatch, this paper proposes a tunable detector, which is characterised by a tunable parameter. The proposed detector can realise the flexible detection of mismatch signals by adjusting the tunable parameter, and hence the directivity (robustness or selectivity to mismatched signals) of the tunable detector can be smoothly adjusted. In addition, the tunable detector can obtain approximately the same detection performance as the corresponding generalised likelihood ratio test in the absence of signal mismatch. The proposed tunable detector also possesses the constant false alarm rate property. Numerical examples illustrate the effectiveness of the proposed detector.

Bayesian adaptive direction detector in sample‐starved environment

“…To compare with the conventional direction detector in (1) with sufficient training data, we first repeat the conventional direction detector as [6] t…”

“…Introduction: Target (usually including target and jamming) detection is a basic function of a radar system [1,2]. The resolution of modern radar system continually improves.…”

Parametric detector for subspace‐based distributed target detection in the presence of signal mismatch

“…With the improvement of the radar resolution, a target usually occupies multiples range bins. Many detectors were proposed in the literature, such as [2, 3]. The detectors in these references were proposed for rank‐one signals, which have known steering vectors.…”