High resolution radar: inversible spectral analysis

 

Yu. N.  Gorbunov ^1,2

1 Fryazino Branch of Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences, Vvedensky Sq.1, Fryazino Moscow region 141190, Russia,

2 Russian Technological University (MIREA), Vernadskogo avenue, 78, Moscow 119454, Russia

 

The paper is received on Ôçêøä 20, 2018

 

Abstract. For adaptive high resolution radars, a reversible SKA is proposed, which consists in choosing the SKA method depending on the type of signal, the tasks being solved and the presence of hardware and resource constraints. At different stages and in different situations, the randomization of the parameters of radar signals, the conditions of their processing and formation, which eliminates the negative effects of the CO (stroboscopic, interference, side lobes, quantization noise, etc.), are required. The necessity of introducing information redundancy into probing signals, which is achieved by expanding the spectra of ordinary and spatial frequencies, is substantiated. The SKA methods are proposed that provide an important advantage - the implementation of the SKA with the realization of the possibility of constructing associative (parallel, multi-channel) processing, target variation of the target tasks, the use of the SKA when using the rough "binary - sign" statistics of input signals. With regard to the synthesis of adaptive radar, the conditions for the implementation of high-resolution radar were analyzed, in which an address-target approach was used in choosing the order of the parametric approximating model and the necessary periodogram and correlogram averaging. The reversible spectral analysis with the adaptation of the algorithms for the formation and processing of signals that implements the implementation of conflicting requirements of high-resolution radar is proposed. With technical instrumental (window-aperture and resource) constraints, it is proposed to apply randomization of the conditions of signal formation and processing by using coarse (low-bit) current samples of input signals, short space-time samples, a small number of transmitting elements in the spectral-angle analysis.

By analogy with adaptive phased antenna arrays (PAR), a sequential diagram was used - education based on truncated (low-element) apertures and coarse (“boolean”, “binary sign”) signal statistics. A nontraditional approach of adaptive formation of the resultant multipath (multi-element) radiation pattern of a phased antenna array by the sequential method of using coarse (low-bit) current samples of input signals is proposed.

Keywords: spectral-correlation analysis, spatio-temporal, spectral-correlation analysis, power spectral density, phased array, randomization, superresolution.

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For citation:

Yu. N. Gorbunov. High resolution radar: inversible spectral analysis. Zhurnal Radioelektroniki - Journal of Radio Electronics. 2018. No. 10. Available at http://jre.cplire.ru/jre/oct18/7/text.pdf

DOI  10.30898/1684-1719.2018.10.7