Reference for citation: Rumyantsev V. L., Rostovtsev I. A., Karpov A. N., Titov D. V. Algorithm for Optimal Detection of a Moving Target On-Board Radar. Journal of Instrument Engineering. 2024. Vol. 67, N 6. P. 492–499 (in Russian). DOI: 10.17586/0021-3454-2024-67-6-492-499

Abstract. The results of the synthesis of an algorithm for optimal signal detection, consisting in alternating conversion of received signals in time and compensation of the interference signal during accumulation in the filter, are presented. The physical basis of the synthesis is the differences between the time-frequency characteristics of the signals reflected from the DC and the Earth’s surface, manifested in the time shift of the maxima of the useful and interference signals with equal Doppler frequency shifts. The processing algorithm consists in comparing the module of the weight integral with the threshold. A block diagram of the optimal detector has been developed. The dependences of the amplitude-normalized weight vector of optimal processing over time are considered. An assessment of the potential detection characteristics of moving targets has been carried out. It is shown that when detecting low-speed moving targets, there are optimal scanning speeds at which the probability of correct detection is maximum.

Keywords: detection algorithm, interference signal, weight processing, Doppler frequency, detection probability

References:

1. Verba V. S., Neronskiy L. B., Osipov I. G., Turuk V. E. Radiolokatsionnyye sistemy zemleobzora kosmicheskogo bazirovaniya (Space-Based Land Survey Radar Systems), Moscow, 2010, 680 р. (in Russ.) 2. Dulevich V. E. Teoreticheskiye osnovy radiolokatsii (Theoretical Foundations of Radar), Moscow, 1978. (in Russ.) 3. Shkolny L. A. Radiolokatsionnyye sistemy vozdushnoy razvedki, deshifrovaniye radiolokatsionnykh izobrazheniy (Aerial Reconnaissance Radar Systems, Decoding of Radar Images), Moscow, 2008, 531 р. (in Russ.) 4. Bakulev P. A., Stepin V. M. Metody i ustroystva selektsii dvizhushchikhsya tseley (Methods and Devices for Selecting Moving Targets), Moscow, 1986, 288 р. (in Russ.) 5. Skolnik M., ed., Radar handbook, McGraw-Hill, 1990. 6. Lukoshkin A. P., ed., Obrabotka signalov v mnogokanal’nykh RLS (Signal Processing in Multi-Channel Radars), Moscow, 1983, 328 р. (in Russ.) 7. Cramer H. Mathematical Methods of Statistics, Princeton University Press Princeton, 1946. 8. Ventzel E. S. Teoriya veroyatnostey i yeye inzhenernyye prilozheniya (Probability Theory and its Engineering Applications), Moscow, 1988, 560 р. (in Russ.) 9. Akinshin N. S., Peteshov A. V., Rumyantsev V. L., Khomyakov K. A. News of Tula State University. Technical Sciences, 2018, no. 9, pp. 69–79. (in Russ.) 10. Koshelev V. I., Belokurov V. A. Tsifrovaya obrabotka signalov, 2005, no. 1, pp. 41–46. (in Russ.) 11. Strakhova L. A. Izvestiya vuzov. Radioelektronika, 1988, no. 4, pp. 8–15. (in Russ.) 12. Bystrov R. P., Dmitriyev V. G., Potapov A. A., Sokolov A. V. Problemy radiolokatsionnogo obnaruzheniya malokontrastnykh ob”yektov. Voprosy perspektivnoy radiolokatsii (Problems of Radar Detection of Low-Contrast Objects. Issues of Advanced Radar), Moscow, 2003, рр. 20-48. (in Russ.) 13. Ziatdinov S. I. Journal of Instrument Engineering, 2019, no. 5(62), pp. 424–432. (in Russ.) 14. Shirman Ya. D., ed., Radioelektronnyye sistemy. Osnovy postroyeniya i teoriya (Radioelectronic Systems. Fundamentals of Construction and Theory), Moscow, 1998, 826 р. (in Russ.) 15. Aleshkin A. P., Bakholdin V. S., Gavrilov D. A., Lekontsev D. A. Journal of Instrument Engineering, 2016, no. 4(53), pp. 261–267. (in Russ.)