{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T02:23:19Z","timestamp":1760149399935,"version":"build-2065373602"},"reference-count":28,"publisher":"MDPI AG","issue":"15","license":[{"start":{"date-parts":[[2023,7,29]],"date-time":"2023-07-29T00:00:00Z","timestamp":1690588800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100012166","name":"National Key Research and Development Program of China","doi-asserted-by":"publisher","award":["2016YFC1401100"],"award-info":[{"award-number":["2016YFC1401100"]}],"id":[{"id":"10.13039\/501100012166","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>A new method for measuring the vector velocity of meteoroids using meteor head echoes is proposed in this study. The lateral velocity is determined by utilizing the phase interference measurement between channels, while the radial velocity is obtained using a conventional Doppler frequency shift measurement. Compared to previous studies, this method does not require multi-site observations and can calculate the vector velocity of meteors in real-time. This paper provides the complete process for the inversion of the meteor vector velocity, detailing the analyzing process using MU radar head echo data. First, the MUSIC algorithm was used to estimate the DOA of the meteor target, which is a parameter required for lateral velocity measurement. Channel calibration is required before this estimation. Next, delay-Doppler matched filter processing was performed on each receiving channel\u2019s data to determine the distance and radial velocity of the meteor target. Subsequently, the lateral velocity component was synthesized using the least squares method from the phase difference rate extracted from the matched filter output results of multiple channel pairs. Then, the vector velocity and trajectory of the meteor could be determined. The method was verified using MU radar head echo data. Different groups of channel pairs were selected for calculating the lateral velocity, and the results were found to be close, demonstrating the self-consistency of the method. Additionally, the calculated vector velocity is consistent with the direction and magnitude of the meteor\u2019s motion trajectory, confirming the feasibility of the proposed approach. The method allows for the observation of more prominent characteristics of meteoroid motion, providing a more detailed observation capability of velocity variations in other directions than previous methods.<\/jats:p>","DOI":"10.3390\/rs15153784","type":"journal-article","created":{"date-parts":[[2023,7,31]],"date-time":"2023-07-31T01:48:50Z","timestamp":1690768130000},"page":"3784","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Determination of Meteor Vector Velocity Using MU Interferometry Measurements of Head Echoes"],"prefix":"10.3390","volume":"15","author":[{"given":"Xin","family":"Xie","sequence":"first","affiliation":[{"name":"Electronic Information School, Wuhan University, Wuhan 430072, China"}]},{"given":"Zhangyou","family":"Chen","sequence":"additional","affiliation":[{"name":"Electronic Information School, Wuhan University, Wuhan 430072, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9894-7889","authenticated-orcid":false,"given":"Li","family":"Wang","sequence":"additional","affiliation":[{"name":"College of Meteorology and Oceanography, National University of Defense Technology, Changsha 410073, China"}]},{"given":"Heng","family":"Zhou","sequence":"additional","affiliation":[{"name":"Electronic Information School, Wuhan University, Wuhan 430072, China"}]},{"given":"Xiongbin","family":"Wu","sequence":"additional","affiliation":[{"name":"Electronic Information School, Wuhan University, Wuhan 430072, China"}]}],"member":"1968","published-online":{"date-parts":[[2023,7,29]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"7015","DOI":"10.5194\/acp-8-7015-2008","article-title":"A Chemical Model of Meteoric Ablation","volume":"8","author":"Vondrak","year":"2008","journal-title":"Atmos. Chem. Phys."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"197","DOI":"10.3847\/PSJ\/ac22b2","article-title":"An Improved Method to Measure Head Echoes Using a Meteor Radar","volume":"2","author":"Panka","year":"2021","journal-title":"Planet. Sci. J."},{"key":"ref_3","unstructured":"McKinley, D.W.R. (1961). Meteor Science and Engineering, McGraw-Hill."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"285","DOI":"10.1016\/j.jastp.2003.11.001","article-title":"Radio Science Issues Surrounding HF\/VHF\/UHF Radar Meteor Studies","volume":"66","author":"Mathews","year":"2004","journal-title":"J. Atmos. Sol.-Terr. Phys."},{"key":"ref_5","doi-asserted-by":"crossref","unstructured":"Andersen, J. (1998). Highlights of Astronomy: As Presented at the XXIIIrd General Assembly of the IAU, 1997, Springer. International Astronomical Union\/Union Astronomique Internationale.","DOI":"10.1007\/978-94-011-4778-1"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"300","DOI":"10.1016\/j.icarus.2012.07.033","article-title":"Determining Meteoroid Bulk Densities Using a Plasma Scattering Model with High-Power Large-Aperture Radar Data","volume":"221","author":"Close","year":"2012","journal-title":"Icarus"},{"key":"ref_7","doi-asserted-by":"crossref","unstructured":"Hawkes, R., Mann, I., and Brown, P. (2005). Modern Meteor Science an Interdisciplinary View, Springer.","DOI":"10.1007\/1-4020-5075-5"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"1645","DOI":"10.1016\/j.asr.2015.07.022","article-title":"Mean Thermospheric Density Estimation Derived from Satellite Constellations","volume":"56","author":"Li","year":"2015","journal-title":"Adv. Space Res."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"244","DOI":"10.1016\/0019-1035(85)90121-6","article-title":"Collisional Balance of the Meteoritic Complex","volume":"62","author":"Zook","year":"1985","journal-title":"Icarus"},{"key":"ref_10","first-page":"11979","article-title":"Sources of Cosmic Dust in the Earth\u2019s Atmosphere","volume":"43","author":"Janches","year":"2016","journal-title":"Geophys. Res. Lett."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"6518","DOI":"10.1002\/2015GL065149","article-title":"On the Size and Velocity Distribution of Cosmic Dust Particles Entering the Atmosphere","volume":"42","author":"Plane","year":"2015","journal-title":"Geophys. Res. Lett."},{"key":"ref_12","doi-asserted-by":"crossref","unstructured":"Hawkes, R., Mann, I., and Brown, P. (2005). Modern Meteor Science an Interdisciplinary View, Springer.","DOI":"10.1007\/1-4020-5075-5"},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"2217","DOI":"10.5194\/angeo-26-2217-2008","article-title":"Determination of Meteoroid Physical Properties from Tristatic Radar Observations","volume":"26","author":"Kero","year":"2008","journal-title":"Ann. Geophys."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"2303","DOI":"10.5194\/angeo-26-2303-2008","article-title":"The EISCAT Meteor Code","volume":"26","author":"Wannberg","year":"2008","journal-title":"Ann. Geophys."},{"key":"ref_15","doi-asserted-by":"crossref","unstructured":"Kero, J. (2014, January 16\u201324). Multi Station- and Interferometric Radar Meteor Head Echo Observations. Proceedings of the 2014 XXXIth URSI General Assembly and Scientific Symposium (URSI GASS), Beijing, China.","DOI":"10.1109\/URSIGASS.2014.6929857"},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"511","DOI":"10.5194\/acp-4-511-2004","article-title":"Observations of Meteor-Head Echoes Using the Jicamarca 50MHz Radar in Interferometer Mode","volume":"4","author":"Chau","year":"2004","journal-title":"Atmos. Chem. Phys."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"162","DOI":"10.1016\/j.icarus.2006.11.006","article-title":"Sporadic Meteor Sources as Observed by the Jicamarca High-Power Large-Aperture VHF Radar","volume":"188","author":"Chau","year":"2007","journal-title":"Icarus"},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"1155","DOI":"10.1029\/RS020i006p01155","article-title":"The MU Radar with an Active Phased Array System: 1. Antenna and Power Amplifiers","volume":"20","author":"Fukao","year":"1985","journal-title":"Radio Sci."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"639","DOI":"10.5194\/angeo-30-639-2012","article-title":"A Meteor Head Echo Analysis Algorithm for the Lower VHF Band","volume":"30","author":"Kero","year":"2012","journal-title":"Ann. Geophys."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"127","DOI":"10.1109\/LGRS.2015.2495109","article-title":"A Scheme to Measure Lateral Velocity by Radio Interferometry","volume":"13","author":"Li","year":"2016","journal-title":"IEEE Geosci. Remote Sens. Lett."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"1427","DOI":"10.1109\/JOE.2019.2922093","article-title":"A Scheme for Multitarget Lateral Velocity Measurement With High-Frequency Monostatic Radar","volume":"45","author":"Li","year":"2020","journal-title":"IEEE J. Ocean. Eng."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"105591","DOI":"10.1016\/j.pss.2022.105591","article-title":"A Scheme to Measure Velocity Vector of a Meteor by Meteor Radar","volume":"223","author":"Wang","year":"2022","journal-title":"Planet. Space Sci."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"1513","DOI":"10.1109\/TAP.2013.2296325","article-title":"Dual Interferometric-Doppler Measurements of the Radial and Angular Velocity of Humans","volume":"62","author":"Nanzer","year":"2014","journal-title":"IEEE Trans. Antennas Propagat."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"276","DOI":"10.1109\/TAP.1986.1143830","article-title":"Multiple Emitter Location and Signal Parameter Estimation","volume":"34","author":"Schmidt","year":"1986","journal-title":"IEEE Trans. Antennas Propag."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"e2022JA030709","DOI":"10.1029\/2022JA030709","article-title":"Meteor Head Echo Analyses From Concurrent Radar Observations at AMISR Resolute Bay, Jicamarca, and Millstone Hill","volume":"127","author":"Hedges","year":"2022","journal-title":"JGR Space Phys."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"3974","DOI":"10.1093\/mnras\/stac2727","article-title":"Radar Analysis Algorithm for Determining Meteor Head Echo Parameter Probability Distributions","volume":"517","author":"Kastinen","year":"2022","journal-title":"Mon. Not. R. Astron. Soc."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"53","DOI":"10.1006\/icar.1999.6330","article-title":"Micrometeor Observations Using the Arecibo 430 MHz Radar I. Determination of the Ballistic Parameter from Measured Doppler Velocity and Deceleration Results","volume":"145","author":"Janches","year":"2000","journal-title":"Icarus"},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"1221","DOI":"10.1016\/j.jastp.2010.08.004","article-title":"Determination of Physical and Radiant Meteor Properties Using PFISR Interferometry Measurements of Head Echoes","volume":"72","author":"Sparks","year":"2010","journal-title":"J. Atmos. Sol.-Terr. Phys."}],"container-title":["Remote Sensing"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2072-4292\/15\/15\/3784\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T20:22:24Z","timestamp":1760127744000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2072-4292\/15\/15\/3784"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,7,29]]},"references-count":28,"journal-issue":{"issue":"15","published-online":{"date-parts":[[2023,8]]}},"alternative-id":["rs15153784"],"URL":"https:\/\/doi.org\/10.3390\/rs15153784","relation":{},"ISSN":["2072-4292"],"issn-type":[{"type":"electronic","value":"2072-4292"}],"subject":[],"published":{"date-parts":[[2023,7,29]]}}}