Optimization of signals detection systems on the background clutter
Journal Title: Вісник НТУУ КПІ. Серія Радіотехніка, Радіоапаратобудування - Year 2017, Vol 0, Issue 68
Abstract
Introduction. The article deals with the optimization of a moving target signals detection systems against clutter on probabilistic criteria. The object of research is the detection system implementing coherent rejection of clutter followed by coherent or non-coherent accumulation of rejection residues. The purpose is to optimize rejector filter weight coefficients depending on the correlation properties of clutter on probabilistic criteria. Probabilistic characteristics of the detection systems. The expressions for the probability characteristics of the detection systems with coherent rejection clutter and subsequent coherent or non-coherent accumulation of rejection residues are obtained respectively. These expressions establish a functional relationship between the averaged on Doppler signal phase of the correct detection probability and correlation clutter parameters and detection system characteristics. The optimization procedure. The criteria to optimize the weight vector of the rejector filter is listed. These criteria make it possible to communicate the optimal weight vector with clutter parameters on the basis of non-linear programming methods. The quasi-Newton iterative procedure for finding the optimal vector is shown. The restrictions are introduced on samples rejector filter frequency response to achieve unimodal extremum. The numerical results of optimization. We consider the results of numerical optimization system of coherent rejection and subsequent non-coherent accumulation on probabilistic criteria. A comparison of their results with the same optimization of the rejector filter on energy criteria is conducted. Conclusion. The proposed optimization method of detection systems on probabilistic criteria allows to obtain significant gains in the efficiency of detection signals compared with the optimization on energy criteria and to implement the limit efficiency for this class of systems.
Authors and Affiliations
D. Popov
Keywords
Related Articles
- EP ID EP308221
- DOI 10.20535/RADAP.2017.68.33-37
- Views 49
- Downloads 0
Algorithm for motion artifacts removal from the ensemble of pulse waves
Introduction. In this paper we propose an artifact removal algorithm (motion artifacts) from the ensemble of pulse waves of photoplethysmographic signal. Research results. The motion artifact is removed by using the extr...
New Technique of Near Maximum Likelihood Detection Processes
This paper introduces new detector named newly adaptively designed near maximum likelihood detector (NADD). This detector combines adaptively three types of near maximum likelihood detectors, pseudobinary, pseudoquaterna...
Mathematical model сoherent demodulation of synchronous mutually nonorthogonal digital signals with minimum frequency-shift keying
Introduction. The synthesis mathematical model procedure of coherent demodulation of synchronous mutually nonorthogonal digital signals with minimum frequency-shift keying is the basic and purpose of this article. Synthe...
Engineering of refraction index profile of planar metal-dielectric waveguide
Engineering of refraction index profile for planar metal-dielectric waveguide is performed.
Segmentation of anatomical heart structures in Ensite Verismo software for radiofrequency ablation of arrhythmogenic tissues
Review of the problem. The relevance of the research is the need of a high-quality imaging of the left atrium anatomy for the effectiveness of radiofraquency ablation of arrhythmogenic tissue of the myocardium in real ti...