{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2024,12,30]],"date-time":"2024-12-30T17:40:31Z","timestamp":1735580431398,"version":"3.32.0"},"reference-count":56,"publisher":"MDPI AG","issue":"21","license":[{"start":{"date-parts":[[2021,11,3]],"date-time":"2021-11-03T00:00:00Z","timestamp":1635897600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Nature Science Foundation of China","doi-asserted-by":"crossref","award":["61771367"],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"crossref"}]},{"name":"the Science and Technology on Communication Networks Laboratory","award":["HHS19641X003"]},{"name":"the 111 Project","award":["B18039"]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"While there are recent researches on hypersonic vehicle-borne multichannel synthetic aperture radar in ground moving target indication (HSV-MC-SAR\/GMTI), this article, which specifically explores a robust GMTI scheme for the highly squinted HSV-MC-SAR in dive mode, is novel. First, an improved equivalent range model (IERM) for stationary targets and GMTs is explored, which enjoys a concise expression and therefore offers the potential to simplify the GMTI process. Then, based on the proposed model, a robust GMTI scheme is derived in detail, paying particular attention to Doppler ambiguity arising from the high-speed and high-resolution wide-swath. Furthermore, it retrieves the accurate two-dimensional speeds of GMTs and realizes the satisfactory performance of clutter rejection and GMT imaging, generating the matched beamforming and enhancing the GMT energy. Finally, it applies the inverse projection to revise the geometry shift induced by the vertical speed. Simulation examples are used to verify the proposed GMTI scheme.<\/jats:p>","DOI":"10.3390\/rs13214431","type":"journal-article","created":{"date-parts":[[2021,11,4]],"date-time":"2021-11-04T01:57:49Z","timestamp":1635991069000},"page":"4431","source":"Crossref","is-referenced-by-count":8,"title":["Robust GMTI Scheme for Highly Squinted Hypersonic Vehicle-Borne Multichannel SAR in Dive Mode"],"prefix":"10.3390","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7917-5908","authenticated-orcid":false,"given":"Jiusheng","family":"Han","sequence":"first","affiliation":[{"name":"National Lab of Radar Signal Processing, Xidian University, Xi\u2019an 710071, China"}]},{"given":"Yunhe","family":"Cao","sequence":"additional","affiliation":[{"name":"National Lab of Radar Signal Processing, Xidian University, Xi\u2019an 710071, China"}]},{"given":"Wenhua","family":"Wu","sequence":"additional","affiliation":[{"name":"The School of Information Engineering, Guangdong University of Technology, Guangzhou 510006, China"}]},{"given":"Yang","family":"Wang","sequence":"additional","affiliation":[{"name":"National Lab of Radar Signal Processing, Xidian University, Xi\u2019an 710071, China"}]},{"given":"Tat-Soon","family":"Yeo","sequence":"additional","affiliation":[{"name":"Department of Electrical and Computer Engineering, National University of Singapore, Singapore 119077, Singapore"}]},{"given":"Shuai","family":"Liu","sequence":"additional","affiliation":[{"name":"National Lab of Radar Signal Processing, Xidian University, Xi\u2019an 710071, China"}]},{"given":"Fengfei","family":"Wang","sequence":"additional","affiliation":[{"name":"National Lab of Radar Signal Processing, Xidian University, Xi\u2019an 710071, China"}]}],"member":"1968","published-online":{"date-parts":[[2021,11,3]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1238","DOI":"10.1109\/JSEN.2019.2947114","article-title":"Ground moving target imaging based on compressive sensing framework with single-channel SAR","volume":"20","author":"Kang","year":"2020","journal-title":"IEEE Sens. J."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"338","DOI":"10.1109\/TGRS.2011.2158224","article-title":"Near-space vehicle-borne SAR with reflection-antenna for high-resolution and wide-swath remote sensing","volume":"50","author":"Wang","year":"2012","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"6576","DOI":"10.1109\/JSEN.2018.2850920","article-title":"Efficient synthesis of antenna pattern using improved PSO for spaceborne SAR performance and imaging in presence of element failure","volume":"18","author":"Kang","year":"2018","journal-title":"IEEE Sens. J."},{"key":"ref_4","first-page":"1566","article-title":"A Review on Hypersonic Aircraft","volume":"3","author":"Khedkar","year":"2015","journal-title":"Int. J. Adv. Technol. Eng. Sci."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"31","DOI":"10.1016\/j.dsp.2017.05.007","article-title":"Moving-in-pulse duration model-based target integration method for HSV-borne high-resolution radar","volume":"68","author":"Xu","year":"2017","journal-title":"Digit. Signal Process."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"62","DOI":"10.1016\/j.dsp.2018.11.008","article-title":"Clutter Suppression and Ground Moving Target Imaging Approach for Hypersonic Vehicle borne multichannel radar based on Two-Step focusing Method","volume":"85","author":"Wang","year":"2019","journal-title":"Digit. Signal Process."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"108168","DOI":"10.1016\/j.sigpro.2021.108168","article-title":"A novel hypersonic vehicle-borne multichannel SAR-GMTI scheme based on adaptive sum and difference beams within eigenspace","volume":"187","author":"Han","year":"2021","journal-title":"Signal Process."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"81","DOI":"10.1016\/j.dsp.2017.05.010","article-title":"Clutter suppression and moving target imaging approach for multichannel hypersonic vehicle borne radar","volume":"68","author":"Wang","year":"2017","journal-title":"Digit. Signal Process."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"703","DOI":"10.1147\/rd.445.0703","article-title":"Approximate Performance of Stageic Hypersonic Trajectories for Global Reach","volume":"44","author":"Carter","year":"2000","journal-title":"IBM J. Res. Dev."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"3909","DOI":"10.1109\/TSP.2016.2552511","article-title":"ISAR cross-range scaling using iterative processing via principal component analysis and bisection algorithm","volume":"64","author":"Kang","year":"2016","journal-title":"IEEE Trans. Signal Process."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"2950","DOI":"10.1109\/TAES.2016.150883","article-title":"Efficient ISAR autofocus via minimization of Tsallis Entropy","volume":"52","author":"Kang","year":"2016","journal-title":"IEEE Trans. Aerosp. Electron. Syst."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"5068","DOI":"10.1109\/JSEN.2017.2713804","article-title":"Bistatic-ISAR distortion correction and range and cross-range scaling","volume":"17","author":"Kang","year":"2017","journal-title":"IEEE Sens. J."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"281","DOI":"10.1109\/TGRS.2019.2936246","article-title":"Focusing Hypersonic Vehicle-Borne SAR Data Using Radius\/Angle Algorithm","volume":"58","author":"Tang","year":"2020","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_14","doi-asserted-by":"crossref","unstructured":"Chen, Z., Zhou, Y., Zhang, L., Lin, C., Huang, Y., and Tang, S. (2018). Ground Moving Target Imaging and Analysis for Near-Space Hypersonic Vehicle-Borne Synthetic Aperture Radar System with Squint Angle. Remote Sens., 10.","DOI":"10.3390\/rs10121966"},{"key":"ref_15","doi-asserted-by":"crossref","unstructured":"Han, J., Cao, Y., Yeo, T.S., and Wang, F. (2021). Robust Clutter Suppression and Ground Moving Target Imaging Method for a Multichannel SAR with High-Squint Angle Mounted on Hypersonic Vehicle. Remote Sens., 13.","DOI":"10.3390\/rs13112051"},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"299","DOI":"10.1109\/LGRS.2016.2633359","article-title":"A Novel Doppler Chirp Rate and Baseline Estimation Approach in the Time Domain Based on Weighted Local Maximum-Likelihood for an MC-HRWS SAR System","volume":"14","author":"Zhang","year":"2017","journal-title":"IEEE Trans. Geosci. Remote Sens. Lett."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"35","DOI":"10.1109\/TGRS.2017.2720692","article-title":"Radial Velocity Retrieval for Multichannel SAR Moving Targets With Time\u2013Space Doppler Deambiguity","volume":"56","author":"Xu","year":"2018","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"533","DOI":"10.1109\/TGRS.2015.2461634","article-title":"Ground Moving Target Indication in SAR Images With Symmetric Doppler Views","volume":"54","author":"Lv","year":"2016","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"184","DOI":"10.1016\/j.dsp.2016.01.006","article-title":"MIMO SAR OFDM chirp waveform design and GMTI with RPCA based method","volume":"51","author":"Huang","year":"2016","journal-title":"Digit. Signal Process."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"687","DOI":"10.1109\/TGRS.2014.2327031","article-title":"Robust clutter suppression and moving target imaging approach for multichannel in azimuth high-resolution and wide-swath synthetic aperture radar","volume":"53","author":"Zhang","year":"2015","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"824","DOI":"10.1109\/7.705890","article-title":"A new fourth-order processing algorithm for spaceborne SAR","volume":"34","author":"Eldhuset","year":"1998","journal-title":"IEEE Trans. Aerosp. Electron. Syst."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"3473","DOI":"10.1109\/TGRS.2013.2273086","article-title":"A novel high-order range model and imaging approach for highresolution LEO SAR","volume":"52","author":"Luo","year":"2014","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"500","DOI":"10.1109\/TGRS.2010.2053211","article-title":"Focusing of medium-earth-orbit SAR with advanced nonlinear chirp scaling algorithm","volume":"49","author":"Huang","year":"2011","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"1043","DOI":"10.1049\/el.2011.1322","article-title":"Two-dimensional spectrum for MEO SAR processing using a modified advanced hyperbolic range equation","volume":"47","author":"Bao","year":"2011","journal-title":"Electron. Lett."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"656","DOI":"10.1109\/LGRS.2016.2533631","article-title":"An improved range model and omega-K-based imaging algorithm for high-squint SAR with curved orbit and constant acceleration","volume":"13","author":"Li","year":"2016","journal-title":"IEEE Geosci. Remote Sens. Lett."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"1225","DOI":"10.1109\/TGRS.2014.2336241","article-title":"A high-order imaging algorithm for high-resolution spaceborne SAR based on a modified equivalent squint range model","volume":"53","author":"Wang","year":"2015","journal-title":"IEEE Geosci. Remote Sens."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"3721","DOI":"10.1109\/TGRS.2017.2678763","article-title":"A Modified Equivalent Range Model and Wavenumber-Domain Imaging Approach for High-Resolution-High-Squint SAR With Curved Trajectory","volume":"55","author":"Li","year":"2017","journal-title":"IEEE Geosci. Remote Sens."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"2496","DOI":"10.1109\/TGRS.2014.2360989","article-title":"A performance evaluation of sar-gmti missions for maritime applications","volume":"53","author":"Makhoul","year":"2015","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_29","unstructured":"Faubert, D., and Tam, W. (1987, January 15\u201319). Improvement in the detection performance of a space based radar using a displaced phase centre antenna. Proceedings of the 1987 Antennas and Propagation Society International Symposium, Blacksburg, VA, USA."},{"key":"ref_30","unstructured":"Lightstone, L., Faubert, D., and Rempel, G. (1991, January 12\u201313). Multiple phase centre DPCA for airborne radar. Proceedings of the 1991 IEEE National Radar Conference, Los Angeles, CA, USA."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"5","DOI":"10.1049\/ecej:19990102","article-title":"Introduction to space-time adaptive processing","volume":"11","author":"Klemm","year":"1999","journal-title":"Electron. Commun. Eng. J."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"5159","DOI":"10.1109\/TGRS.2016.2557318","article-title":"Long-CPI multichannel SAR-based ground moving target indication","volume":"54","author":"Xu","year":"2016","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"1174","DOI":"10.1109\/TGRS.2017.2768243","article-title":"GMTI and Parameter Estimation for MIMO SAR System via Fast Interferometry RPCA Method","volume":"56","author":"Huang","year":"2018","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"909","DOI":"10.1049\/iet-spr.2017.0193","article-title":"Clutter suppression and GMTI for hypersonic vehicle borne SAR system with MIMO antenna","volume":"11","author":"Wang","year":"2017","journal-title":"IET Signal Process."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"560","DOI":"10.1109\/TGRS.2012.2201260","article-title":"A generalization of DPCA processing for multichannel SAR\/GMTI radars","volume":"51","author":"Maori","year":"2013","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_36","unstructured":"Delphine, C., and Ishuwa, S. (2010, January 7\u201310). Optimum GMTI processing for space-based SAR\/GMTI systems\u2014Theoretical derivation. Proceedings of the 8th European Conference on Synthetic Aperture Radar, Aachen, Germany."},{"key":"ref_37","unstructured":"Makhoul, E., Broquetas, A., and Gonzalez, O. (2012, January 23\u201326). Evaluation of state-ofthe- art GMTI techniques for future space-borne SAR system-simulation validation. Proceedings of the 9th European Conference on Synthetic Aperture Radar (EUSAR 2012), Nuremberg, Germany."},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"3868","DOI":"10.1109\/TGRS.2012.2186637","article-title":"Gierull, Optimum SAR\/GMTI Processing and Its Application to the Radar Satellite RADARSAT-2 for Traffic Monitoring","volume":"50","author":"Sikaneta","year":"2012","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"1448","DOI":"10.1109\/LGRS.2013.2295222","article-title":"Deramp space-time adaptive processing for multichannel SAR systems","volume":"11","author":"Li","year":"2014","journal-title":"IEEE Trans. Geosci. Remote Sens. Lett."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"4367","DOI":"10.1109\/TGRS.2017.2691742","article-title":"GMTI and Parameter Estimation via Time-Doppler Chirp-Varying Approach for Single-Channel Airborne SAR System","volume":"55","author":"Huang","year":"2017","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"5068","DOI":"10.1109\/JSTARS.2015.2432736","article-title":"First results from an experimental ScanSAR-GMTI mode on RADARSAT-2","volume":"8","author":"Rousseau","year":"2015","journal-title":"IEEE J. Sel. Topics Appl. Earth Observ. Remote Sens."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"5564","DOI":"10.1109\/TGRS.2016.2569259","article-title":"A new SAR-GMTI high-accuracy focusing and relocation algorithm using instantaneous interferometry","volume":"54","author":"Zhang","year":"2016","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"3527","DOI":"10.1109\/TGRS.2012.2184798","article-title":"Detection and estimation with RADARSAT-2 moving-object detection experiment modes","volume":"50","author":"Dragosevic","year":"2012","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"208","DOI":"10.1109\/7.135446","article-title":"A CFAR adaptive matched filter detector","volume":"28","author":"Robey","year":"1992","journal-title":"IEEE Trans. Aerosp. Electron. Syst."},{"key":"ref_45","doi-asserted-by":"crossref","first-page":"1389","DOI":"10.1109\/TAES.2010.5545196","article-title":"Estimation Method for InSAR Interferometric Phase Based on Generalized Correlation Steering Vector","volume":"46","author":"Liao","year":"2010","journal-title":"IEEE Trans. Aerosp. Electron. Syst."},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"221","DOI":"10.1109\/LGRS.2018.2871950","article-title":"Robust radial velocity estimation based on joint-pixel normalized sample covariance matrix and shift vector for moving targets","volume":"16","author":"He","year":"2019","journal-title":"IEEE Trans. Geosci. Remote Sens. Lett."},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"617","DOI":"10.1109\/LGRS.2012.2216248","article-title":"Ground moving target extraction in a multichannel wide-area surveillance sar\/gmti system via the relaxed pcp","volume":"10","author":"Yan","year":"2013","journal-title":"IEEE Trans. Geosci. Remote Sens. Lett."},{"key":"ref_48","doi-asserted-by":"crossref","first-page":"14","DOI":"10.1109\/TGRS.2018.2850152","article-title":"Class Signature-Constrained Background Suppressed Approach to Band Selection for Classification of Hyperspectral Images","volume":"57","author":"Yu","year":"2019","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"1425","DOI":"10.1109\/JSTARS.2016.2618518","article-title":"Improved Signal Reconstruction Algorithm for Multichannel SAR Based on the Doppler Spectrum Estimation","volume":"10","author":"Zuo","year":"2017","journal-title":"IEEE J. Sel. Top. Appl. Earth Observ. Remote Sens."},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"320","DOI":"10.1109\/TGRS.2016.2606436","article-title":"Ground maneuvering target imaging and high-order motion parameter estimation based on second-order keystone and generalized Hough-HAF transform","volume":"55","author":"Huang","year":"2017","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_51","doi-asserted-by":"crossref","first-page":"4486","DOI":"10.1109\/JSTARS.2019.2951199","article-title":"Ground maneuvering targets imaging for synthetic aperture radar based on second-order keystone transform and high-order motion parameter estimation","volume":"12","author":"Zeng","year":"2020","journal-title":"IEEE J. Sel. Top. Appl. Earth Observ. Remote Sens."},{"key":"ref_52","doi-asserted-by":"crossref","first-page":"5034","DOI":"10.1109\/TGRS.2013.2294940","article-title":"Mimo sar processing for multichannel high-resolution wide-swath radars","volume":"52","author":"Sikaneta","year":"2014","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_53","doi-asserted-by":"crossref","first-page":"1661","DOI":"10.1109\/TSP.2002.1011207","article-title":"Fractional cosine, sine, and Hartley transforms","volume":"50","author":"Pei","year":"2002","journal-title":"IEEE Trans. Signal Process."},{"key":"ref_54","doi-asserted-by":"crossref","first-page":"3084","DOI":"10.1109\/78.330368","article-title":"The fractional fourier transform and time-frequencyrepresentations","volume":"42","author":"Almeida","year":"1994","journal-title":"IEEE Trans. Signal Process."},{"key":"ref_55","doi-asserted-by":"crossref","first-page":"57","DOI":"10.1142\/S0219878907001162","article-title":"Approach of multiple moving targets detection for microwave surveillance sensors","volume":"4","author":"Wang","year":"2007","journal-title":"Int. J. Inf. Acquisit."},{"key":"ref_56","doi-asserted-by":"crossref","first-page":"4023","DOI":"10.1109\/TGRS.2016.2535391","article-title":"A Frequency-Domain Imaging Algorithm for Highly Squinted SAR Mounted on Maneuvering Platforms With Nonlinear Trajectory","volume":"54","author":"Li","year":"2016","journal-title":"IEEE Trans. Geosci. Remote Sens."}],"container-title":["Remote Sensing"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2072-4292\/13\/21\/4431\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,12,30]],"date-time":"2024-12-30T17:10:55Z","timestamp":1735578655000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2072-4292\/13\/21\/4431"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,11,3]]},"references-count":56,"journal-issue":{"issue":"21","published-online":{"date-parts":[[2021,11]]}},"alternative-id":["rs13214431"],"URL":"https:\/\/doi.org\/10.3390\/rs13214431","relation":{},"ISSN":["2072-4292"],"issn-type":[{"type":"electronic","value":"2072-4292"}],"subject":[],"published":{"date-parts":[[2021,11,3]]}}}