{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,8]],"date-time":"2026-09-08T14:52:33Z","timestamp":1788879153007,"version":"build-2803163510"},"reference-count":31,"publisher":"MDPI AG","issue":"23","license":[{"start":{"date-parts":[[2023,11,21]],"date-time":"2023-11-21T00:00:00Z","timestamp":1700524800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"the Stable-Support Scientific Project of China Research Institute of Radiowave Propagation","award":["A132003W02"],"award-info":[{"award-number":["A132003W02"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Due to the complex range migration characteristics of large squint angle synthetic aperture radar (SAR), it is difficult for traditional SAR deceptive jamming algorithms to balance focusing ability and computational efficiency. There is an urgent demand for proposing a deceptive jamming algorithm against large squint angle SAR in the field of SAR jamming. This article proposes a deceptive jamming algorithm against SAR with large squint angles based on non-linear chirp scaling and low azimuth sampling reconstruction (NLCSR). The NLCSR algorithm uses a high-order approximation of a high-precision model to accurately construct the jammer\u2019s frequency response (JFR) function. In line with the notion of low azimuth sampling processing of the transformation domain, the construction of the space-variant azimuth modulation phase item is completed using the non-linear chirp scaling method. Compared with the traditional deceptive jamming algorithms against the large squint angle SAR, the NLCSR algorithm only needs Fourier transform and complex multiplication while ensuring the focusing ability, which is easier to implement on an efficient parallel digital signal processor based on fast Fourier transform (FFT). Simulation results prove the superior property of the NLCSR algorithm in focusing ability and computational efficiency. Compared to the existing large squint angle SAR deceptive jamming algorithm, the focusing ability of the NLCSR algorithm is almost the same, and the calculation efficiency is improved by at least 52.1%.<\/jats:p>","DOI":"10.3390\/rs15235446","type":"journal-article","created":{"date-parts":[[2023,11,21]],"date-time":"2023-11-21T12:12:13Z","timestamp":1700568733000},"page":"5446","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Deceptive Jamming Algorithm against Synthetic Aperture Radar in Large Squint Angle Mode Based on Non-Linear Chirp Scaling and Low Azimuth Sampling Reconstruction"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7608-8884","authenticated-orcid":false,"given":"Jiaming","family":"Dong","sequence":"first","affiliation":[{"name":"Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China"},{"name":"Key Laboratory of Electromagnetic Radiation and Sensing Technology, Chinese Academy of Sciences, Beijing 100190, China"},{"name":"School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100049, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qunying","family":"Zhang","sequence":"additional","affiliation":[{"name":"Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China"},{"name":"Key Laboratory of Electromagnetic Radiation and Sensing Technology, Chinese Academy of Sciences, Beijing 100190, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wenqiang","family":"Huang","sequence":"additional","affiliation":[{"name":"Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China"},{"name":"Key Laboratory of Electromagnetic Radiation and Sensing Technology, Chinese Academy of Sciences, Beijing 100190, China"},{"name":"School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100049, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5742-5902","authenticated-orcid":false,"given":"Haiying","family":"Wang","sequence":"additional","affiliation":[{"name":"Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China"},{"name":"Key Laboratory of Electromagnetic Radiation and Sensing Technology, Chinese Academy of Sciences, Beijing 100190, China"},{"name":"School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100049, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2404-5732","authenticated-orcid":false,"given":"Wei","family":"Lu","sequence":"additional","affiliation":[{"name":"Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China"},{"name":"Key Laboratory of Electromagnetic Radiation and Sensing Technology, Chinese Academy of Sciences, Beijing 100190, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaojun","family":"Liu","sequence":"additional","affiliation":[{"name":"Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China"},{"name":"Key Laboratory of Electromagnetic Radiation and Sensing Technology, Chinese Academy of Sciences, Beijing 100190, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,11,21]]},"reference":[{"key":"ref_1","unstructured":"Cumming, I.G., and Wong, F.H. (2005). Digital Processing of Synthetic Aperture Radar Data, Artech House Publishers."},{"key":"ref_2","unstructured":"Condley, C. (1991, January 14). Some System Considerations for Electronic Countermeasures to Synthetic Aperture Radar. Proceedings of the IEE Colloquium on Electronic Warfare Systems, London, UK."},{"key":"ref_3","unstructured":"Goi, W.W., and Goj, W.W. (1993). Synthetic-Aperture Radar and Electronic Warfare, Artech House Publishers."},{"key":"ref_4","doi-asserted-by":"crossref","unstructured":"Song, C., Wang, Y., Jin, G., Wang, Y., Dong, Q., Wang, B., Zhou, L., Lu, P., and Wu, Y. (2022). A Novel Jamming Method against SAR Using Nonlinear Frequency Modulation Waveform with Very High Sidelobes. Remote Sens., 14.","DOI":"10.3390\/rs14215370"},{"key":"ref_5","doi-asserted-by":"crossref","unstructured":"Liu, G., Li, L., Ming, F., Sun, X., and Hong, J. (2022). A Controllable Suppression Jamming Method against SAR Based on Active Radar Transponder. Remote Sens., 14.","DOI":"10.3390\/rs14163949"},{"key":"ref_6","first-page":"1900","article-title":"A Study on the Active Deception Jamming to SAR","volume":"31","author":"Wang","year":"2003","journal-title":"Acta Electron. Sin."},{"key":"ref_7","doi-asserted-by":"crossref","unstructured":"Yan, Z., Guoqing, Z., and Yu, Z. (2006, January 16\u201319). Research on SAR Jamming Technique Based on Man-made Map. Proceedings of the 2006 CIE International Conference on Radar, Shanghai, China.","DOI":"10.1109\/ICR.2006.343301"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"4486","DOI":"10.1109\/TGRS.2013.2259178","article-title":"A Large Scene Deceptive Jamming Method for Space-Borne SAR","volume":"51","author":"Zhou","year":"2013","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_9","doi-asserted-by":"crossref","unstructured":"Sun, Q., Shu, T., Zhou, S., Tang, B., and Yu, W. (2014, January 19\u201323). A Novel Jamming Signal Generation Method for Deceptive SAR Jammer. Proceedings of the 2014 IEEE Radar Conference, Cincinnati, OH, USA.","DOI":"10.1109\/RADAR.2014.6875774"},{"key":"ref_10","doi-asserted-by":"crossref","unstructured":"Yang, K., Ye, W., Ma, F., Li, G., and Tong, Q. (2019). A Large-Scene Deceptive Jamming Method for Space-Borne SAR Based on Time-Delay and Frequency-Shift with Template Segmentation. Remote Sens., 12.","DOI":"10.20944\/preprints201911.0340.v1"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"639","DOI":"10.1049\/iet-rsn.2013.0222","article-title":"A Frequency-Domain Three-Stage Algorithm for Active Deception Jamming against Synthetic Aperture Radar","volume":"8","author":"Liu","year":"2014","journal-title":"IET Radar Sonar Navig."},{"key":"ref_12","unstructured":"Lin, X., Liu, P., and Xue, G. (2013, January 14\u201316). Fast Generation of SAR Deceptive Jamming Signal Based on Inverse Range Doppler Algorithm. Proceedings of the IET International Radar Conference 2013, Xi\u2019an, China."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"3037","DOI":"10.1109\/JSTARS.2016.2543961","article-title":"Inverse Omega-K Algorithm for the Electromagnetic Deception of Synthetic Aperture Radar","volume":"9","author":"Liu","year":"2016","journal-title":"IEEE J. Sel. Top. Appl. Earth Obs. Remote Sens."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"3610","DOI":"10.1109\/JSEN.2018.2813521","article-title":"Efficient Deceptive Jamming Method of Static and Moving Targets Against SAR","volume":"18","author":"Sun","year":"2018","journal-title":"IEEE Sens. J."},{"key":"ref_15","doi-asserted-by":"crossref","unstructured":"He, X., Zhu, J., Wang, J., Du, D., and Tang, B. (2014, January 19\u201321). False Target Deceptive Jamming for Countering Missile-Borne SAR. Proceedings of the 2014 IEEE 17th International Conference on Computational Science and Engineering, Chengdu, China.","DOI":"10.1109\/CSE.2014.364"},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"3988","DOI":"10.1109\/JSTARS.2014.2322612","article-title":"Deception Jamming for Squint SAR Based on Multiple Receivers","volume":"8","author":"Zhao","year":"2015","journal-title":"IEEE J. Sel. Top. Appl. Earth Obs. Remote Sens."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"1039","DOI":"10.1109\/JSTARS.2016.2614957","article-title":"Performance Improvement of Deception Jamming Against SAR Based on Minimum Condition Number","volume":"10","author":"Zhao","year":"2017","journal-title":"IEEE J. Sel. Top. Appl. Earth Obs. Remote Sens."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"939","DOI":"10.1109\/JSTARS.2018.2793247","article-title":"Deceptive SAR Jamming Based on 1-Bit Sampling and Time-Varying Thresholds","volume":"11","author":"Zhao","year":"2018","journal-title":"IEEE J. Sel. Top. Appl. Earth Obs. Remote Sens."},{"key":"ref_19","doi-asserted-by":"crossref","unstructured":"Yang, K., Ma, F., Ran, D., Ye, W., and Li, G. (2022). Fast Generation of Deceptive Jamming Signal Against Spaceborne SAR Based on Spatial Frequency Domain Interpolation. IEEE Trans. Geosci. Remote Sens.","DOI":"10.1109\/TGRS.2021.3065312"},{"key":"ref_20","unstructured":"Li, N., Cheng, D., Lu, P., Shu, G., and Guo, Z. (2022). Smart Jamming Against SAR Based on Non-Linear Frequency-Modulated Signal. IEEE Trans. Aerosp. Electron. Syst., 1\u201319."},{"key":"ref_21","doi-asserted-by":"crossref","unstructured":"Dong, J., Zhang, Q., Lu, W., Cheng, W., and Liu, X. (2023). Hybrid Domain Efficient Modulation-Based Deceptive Jamming Algorithm for Nonlinear-Trajectory Synthetic Aperture Radar. Remote Sens., 15.","DOI":"10.3390\/rs15092446"},{"key":"ref_22","doi-asserted-by":"crossref","unstructured":"Liu, Y.X., Zhang, Q., Xiong, S.C., Ni, J.C., Wang, D., and Wang, H.B. (2023). An ISAR Shape Deception Jamming Method Based on Template Multiplication and Time Delay. Remote Sens., 15.","DOI":"10.3390\/rs15112762"},{"key":"ref_23","unstructured":"Shenghua, Z., Dazhuan, X., Xueming, J., and Hua, H. (2004, January 1\u20134). A Study on Active Jamming to Synthetic Aperture Radar. Proceedings of the ICCEA 2004 3rd International Conference on Computational Electromagnetics and Its Applications, 2004, Beijing, China."},{"key":"ref_24","unstructured":"Dai, D.H., Wu, X.F., Wang, X.S., and Xiao, S.P. (2007, January 15\u201318). SAR Active-Decoys Jamming Based on DRFM. Proceedings of the 2007 IET International Conference on Radar Systems, Edinburgh, UK."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"3761","DOI":"10.1109\/TGRS.2009.2025372","article-title":"Generalized Frequency-Domain SAR Processing","volume":"47","author":"Zaugg","year":"2009","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_26","first-page":"433","article-title":"Image Coregistration in Sar Interferometry","volume":"XXXVII","author":"Li","year":"2008","journal-title":"Int. Arch. Photogramm. Remote Sens. Spat. Inf. Sci."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"2308","DOI":"10.1109\/TGRS.2010.2102040","article-title":"Focus Improvement of Highly Squinted Data Based on Azimuth Nonlinear Scaling","volume":"49","author":"Sun","year":"2011","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"025005","DOI":"10.1117\/1.JRS.10.025005","article-title":"Extended Nonlinear Chirp Scaling Algorithm for Highly Squinted Missile-Borne Synthetic Aperture Radar with Diving Acceleration","volume":"10","author":"Liu","year":"2016","journal-title":"J. Appl. Remote Sens."},{"key":"ref_29","doi-asserted-by":"crossref","unstructured":"Yi, T., He, Z., He, F., Dong, Z., and Wu, M. (2017). Generalized Nonlinear Chirp Scaling Algorithm for High-Resolution Highly Squint SAR Imaging. Sensors, 17.","DOI":"10.3390\/s17112568"},{"key":"ref_30","unstructured":"(2023, June 24). Sample Imagery Detail. Available online: https:\/\/www.intelligence-airbusds.com\/en\/9317-sample-imagery-detail?product=37970&keyword=&type=364."},{"key":"ref_31","unstructured":"(2023, July 05). SAR Data\u2013Pathfinder Radar ISR & SAR Systems, Available online: https:\/\/www.sandia.gov\/radar\/pathfinder-radar-isr-and-synthetic-aperture-radar-sar-systems\/complex-data\/."}],"container-title":["Remote Sensing"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2072-4292\/15\/23\/5446\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T21:26:34Z","timestamp":1760131594000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2072-4292\/15\/23\/5446"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,11,21]]},"references-count":31,"journal-issue":{"issue":"23","published-online":{"date-parts":[[2023,12]]}},"alternative-id":["rs15235446"],"URL":"https:\/\/doi.org\/10.3390\/rs15235446","relation":{},"ISSN":["2072-4292"],"issn-type":[{"value":"2072-4292","type":"electronic"}],"subject":[],"published":{"date-parts":[[2023,11,21]]}}}