izmertechИзмерительная техникаIzmeritel`naya Tekhnika0368-10252949-5237ФГУП "ВНИИФТРИ"10.32446/0368-1025it.2020-7-56-61izmertech-1817Research ArticleРАДИОТЕХНИЧЕСКИЕ ИЗМЕРЕНИЯRADIO MEASUREMENTSВлияние точности оценивания частотных характеристик радиолокационных целей на результаты идентификации геометрической формы локальных отражателейInfluence of accuracy estimation of frequency characteristics of radar targets on the results of identifying the geometric shape of local reflectorsНеёловВ. В.NeelovV. V.

Санкт-Петербург

Vladimir V. Neelov

St. Petersburg

lopedevego@yandex.ruШалдаевС. Е.ShaldaevS. E.

Санкт-Петербург

Sergey E. Shaldaev

St. Petersburg

shs99@yandex.ruВоенно-космическая академия имени А. Ф. МожайскогоРоссияA. F. Mozhaysky’s Military-space AcademyRussian Federation202012072023075661Copyright © Неёлов В.В., Шалдаев С.Е., 20232023Неёлов В.В., Шалдаев С.Е.Neelov V.V., Shaldaev S.E.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.izmt.ru/jour/article/view/1817

Рассмотрены вопросы внедрения широкополосных технологий в радиолокационные системы гражданского и специального назначения. Популярность указанных технологий для решения ряда практических задач обусловливает актуальность исследований, связанных с детальным анализом дальностных портретов наблюдаемых объектов на новом качественном уровне. Исследовано влияние систематической погрешности измерительного канала на достоверность идентификации геометрической формы локальных отражателей объекта наблюдения с использованием результатов широкополосного радиолокационного зондирования. Описан созданный широкополосный радиолокационный измерительный канал с линейной частотной модуляцией сигнала на основе метода обобщённого гетеродинирования. Предложена методика компенсации систематических погрешностей измерений для канала данного вида с использованием калибровочных сфер. Оценена систематическая погрешность измерений частотной характеристики сферы и предложен показатель погрешности оценивания частотных характеристик объектов. Приведена зависимость статистических показателей результатов идентификации геометрической формы локальных отражателей от указанного показателя. Экспериментально подтверждена возможность идентификации геометрической формы локальных отражателей объектов по параметрам их частотных характеристик. Полученные результаты можно применять для оценки достоверности идентификации геометрической формы локальных отражателей на этапе калибровки измерительного канала, а также для принятия решения о целесообразности реализации алгоритмов идентификации геометрической формы локальных отражателей на существующей радиолокационной станции.

The issues of introducing broadband technologies in civil and special purpose radar systems are considered. The popularity of these technologies for solving a number of practical problems determines the relevance of research related to a detailed analysis of long-range portraits of observed objects at a new qualitative level. The influence of the systematic error of the measuring channel on the reliability of the identification of the geometric shape of the local reflectors of the observation object using the results of broadband radar sounding is studied. The created broadband radar measuring channel with linear frequency modulation of the signal based on the method of generalized heterodyning is described. A technique is proposed for compensating systematic measurement errors for a channel of a given type using calibration spheres. The systematic error in measuring the frequency characteristics of the sphere is estimated, and an error indicator for estimating the frequency characteristics of objects is proposed. The dependence of the statistical indicators of the identification results of the geometric shape of local reflectors on the specified indicator is given. The possibility of identifying the geometric shape of local reflectors of objects by the parameters of their frequency characteristics has been experimentally confirmed. The results can be used to assess the reliability of identifying the geometric shape of local reflectors at the stage of calibration of the measuring channel, as well as to decide on the feasibility of implementing algorithms for identifying the geometric shape of local reflectors on an existing radar.

частотная характеристикаидентификация геометрической формы радиолокационной целикалибровка измерительного каналаширокополосные измерения.frequency characteristicsidentifying the geometric shape of radar targetmeasurement channel calibrationwideband measurementReferencesEaves J., Reedy E., Principles of Modern Radar, Springer US, 2012, 720 p.Eaves J., Reedy E., Principles of Modern Radar, Springer US, 2012, 720 p.Skolnik M., Radar Handbook, McGraw-Hill, 2008, 1328 p.Skolnik M., Radar Handbook, McGraw-Hill, 2008, 1328 p.Jankiraman M., FMCW Radar Design, Artech House,2018, 390 p.Jankiraman M., FMCW Radar Design, Artech House, 2018, 390 p.Çetiner R., Çetintepe Ç., Demir Ş., Hizal A., Prospects of FMCW-based frequency diverse array radar, The Journal of Engineering, 2019, vol. 11, no. 21, pp. 7299-7303. https:/doi.org/10.1049/joe.2019.0458Çetiner R., Çetintepe Ç., Demir Ş., Hizal A., Prospects of FMCW-based frequency diverse array radar, The Journal of Engineering, 2019, vol. 11, no. 21, pp. 7299-7303. https:/doi.org/10.1049/joe.2019.0458Kang M., Kim B., Kim H., Park S., A Study on PulsedLFM and Pulsed-NLFM waveforms for Radar systems, 2019 International Conference on Information and Communication Technology Convergence, Jeju Island, Korea (South), 2019, pp. 983–985. https:/doi.org/10.1109/ICTC46691.2019.8940010Kang M., Kim B., Kim H., Park S., A Study on PulsedLFM and Pulsed-NLFM waveforms for Radar systems, 2019 International Conference on Information and Communication Technology Convergence, Jeju Island, Korea (South), 2019, pp. 983–985. https:/doi.org/10.1109/ICTC46691.2019.8940010Klotz M., Rohling H., 24 GHz Radar Sensors for Automotive Applications, International Conference on Microwaves and Radar, MIKON2000, Wroylaw, Poland, 2000, pp. 359–362. https:/doi.org/10.1109/MIKON.2000.913944Klotz M., Rohling H., 24 GHz Radar Sensors for Automotive Applications, International Conference on Microwaves and Radar, MIKON2000, Wroylaw, Poland, 2000, pp. 359–362. https:/doi.org/10.1109/MIKON.2000.913944Rohling H., Meinecke M., Mende R., A 77 GHz Automotive Radar System for AICC Applications, International Conference on Microwaves and Radar, Krakow, Poland, 1998, pp. 273–277. https:/doi.org/10.1109/RADAR.2000.851845Rohling H., Meinecke M., Mende R., A 77 GHz Automotive Radar System for AICC Applications, International Conference on Microwaves and Radar, Krakow, Poland, 1998, pp. 273–277. https:/doi.org/10.1109/RADAR.2000.851845Junya L., Yue L., Data Augmentation Based on Attributed Scattering Centers to Train Robust CNN for SAR ATR, Access IEEE, 2019, vol. 7, pp. 25459–25473. https:/doi.org/10.1109/ACCESS.2019.2900522Junya L., Yue L., Data Augmentation Based on Attributed Scattering Centers to Train Robust CNN for SAR ATR, Access IEEE, 2019, vol. 7, pp. 25459–25473. https:/doi.org/10.1109/ACCESS.2019.2900522Zou Y., Gao X., A high precision GTD parameter estimation method, 8th International Congress on Image and Signal Processing, Shenyang, China, 14–16 October, 2015, pp. 1220–1224. https:/doi.org/10.1109/CISP.2015.7408067Zou Y., Gao X., A high precision GTD parameter estimation method, 8th International Congress on Image and Signal Processing, Shenyang, China, 14–16 October, 2015, pp. 1220–1224. https:/doi.org/10.1109/CISP.2015.7408067Yan H., Sheng L. Monostatic GTD Model for Double Scattering due to Specular Refl ections or Edge Diff ractions, IEEE International Conference on Computational Electromagnetics, Chengdu, China, 26–28 March, 2018, pp. 1–3. https:/doi.org/10.1109/COMPEM.2018.8496539Yan H., Sheng L. Monostatic GTD Model for Double Scattering due to Specular Refl ections or Edge Diff ractions, IEEE International Conference on Computational Electromagnetics, Chengdu, China, 26–28 March, 2018, pp. 1–3. https:/doi.org/10.1109/COMPEM.2018.8496539Dai D., Zhang J., Superresolution Polarimetric ISAR Imaging Based on 2D CP-GTD Model, Journal of Sensors, 2015, vol. 1, no. 11, pp. 4–16. https:/doi.org/10.1155/2015/293141Dai D., Zhang J., Superresolution Polarimetric ISAR Imaging Based on 2D CP-GTD Model, Journal of Sensors, 2015, vol. 1, no. 11, pp. 4–16. https:/doi.org/10.1155/2015/293141Wang J., Shaoming E., A GTD model and state space approach based method for extracting the UWB scattering center of moving target. Science China, 2011, vol. 54, no. 1, pp. 182–196. https:/doi.org/0.1007/s11432-010-4137Wang J., Shaoming E., A GTD model and state space approach based method for extracting the UWB scattering center of moving target. Science China, 2011, vol. 54, no. 1, pp. 182–196. https:/doi.org/0.1007/s11432-010-4137Cong Y., Chen B., Nonparametric Bayesian Attributed Scattering Center Extraction for Synthetic Aperture Radar Targets, IEEE Transactions on Signal Processing, 2016, vol. 64, no. 18, pp. 4723–4736. https:/doi.org/10.1109/TSP.2016.2569463Cong Y., Chen B., Nonparametric Bayesian Attributed Scattering Center Extraction for Synthetic Aperture Radar Targets, IEEE Transactions on Signal Processing, 2016, vol. 64, no. 18, pp. 4723–4736. https:/doi.org/10.1109/TSP.2016.2569463Barrio D., Matrán C., On approximate validation of models: a Kolmogorov–Smirnov-based approach, TEST, no. 1 2019, pp. 23–28. https:/doi.org/10.1007/s11749-019-00691-1Barrio D., Matrán C., On approximate validation of models: a Kolmogorov–Smirnov-based approach, TEST, no. 1 2019, pp. 23–28. https:/doi.org/10.1007/s11749-019-00691-1Knott E., Shaeff er J., Tuley M., Radar Cross Section Measurements, SciTech Publishing, 2006, 546 p.Knott E., Shaeff er J., Tuley M., Radar Cross Section Measurements, SciTech Publishing, 2006, 546 p.Knott E., Shaeff er J., Tuley M., Radar Cross Section, SciTech Publishing, 2004, 611 p.Knott E., Shaeff er J., Tuley M., Radar Cross Section, SciTech Publishing, 2004, 611 p.

The authors declare that there are no conflicts of interest present.