Sliding window Gaussian fitting algorithm for ranging error suppression of full-waveform spaceborne laser

The ranging accuracy of spaceborne laser altimeter is one of the main sources that affect the geometric calibration and processing accuracy of the laser.Aiming at the issues of laser ranging extraction lower accuracy and the stability, caused by the quantization error of the full-waveform spaceborne...
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Gespeichert in:

Autor*in:	XIE Junfeng [verfasserIn] LIU Ren [verfasserIn]

Format:	E-Artikel
Sprache:	Chinesisch

Erschienen:	2021

Schlagwörter:	full-waveform spaceborne laser ranging accuracy waveform peak method sliding window relative accuracy absolute accuracy

Übergeordnetes Werk:	In: Acta Geodaetica et Cartographica Sinica - Surveying and Mapping Press, 2014, 50(2021), 9, Seite 1240-1250
Übergeordnetes Werk:	volume:50 ; year:2021 ; number:9 ; pages:1240-1250

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.11947/j.AGCS.2021.20200466

Katalog-ID:	DOAJ076991318

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520			\|a The ranging accuracy of spaceborne laser altimeter is one of the main sources that affect the geometric calibration and processing accuracy of the laser.Aiming at the issues of laser ranging extraction lower accuracy and the stability, caused by the quantization error of the full-waveform spaceborne laser analog signal after digital processing, so a sliding window Gaussian fitting algorithm for ranging error suppression of full-waveform spaceborne laser is proposed.This method uses a sliding window to eliminate noise points near the peak, and optimizes the peak value of the waveform to extract a more accurate ranging value.Finally, the GF-7 laser altimeter was used as the test object, the relative and absolute accuracy of laser elevation were compared and verified by using the ice surface, inland lake and the flat ground.The results indicate that, the laser ranging accuracy of the paper algorithm is improved by 7.5 cm compared with the general peak method. Based on the ranging value of the paper method, the relative accuracy of laser elevation is improved by 4.3 cm. The absolute accuracy of laser elevation is increased by 4.5 cm verified by airborne LiDAR point cloud data. Which fully shows that the method in this paper can be used as a method to reduce effectively the random error of laser ranging, and provides an indispensable foundation for the sub-meter elevation measurement accuracy of the GF-7 satellite.
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allfields	10.11947/j.AGCS.2021.20200466 doi (DE-627)DOAJ076991318 (DE-599)DOAJea0a139e27854da18a3718bbee1542a5 DE-627 ger DE-627 rakwb chi GA1-1776 XIE Junfeng verfasserin aut Sliding window Gaussian fitting algorithm for ranging error suppression of full-waveform spaceborne laser 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The ranging accuracy of spaceborne laser altimeter is one of the main sources that affect the geometric calibration and processing accuracy of the laser.Aiming at the issues of laser ranging extraction lower accuracy and the stability, caused by the quantization error of the full-waveform spaceborne laser analog signal after digital processing, so a sliding window Gaussian fitting algorithm for ranging error suppression of full-waveform spaceborne laser is proposed.This method uses a sliding window to eliminate noise points near the peak, and optimizes the peak value of the waveform to extract a more accurate ranging value.Finally, the GF-7 laser altimeter was used as the test object, the relative and absolute accuracy of laser elevation were compared and verified by using the ice surface, inland lake and the flat ground.The results indicate that, the laser ranging accuracy of the paper algorithm is improved by 7.5 cm compared with the general peak method. Based on the ranging value of the paper method, the relative accuracy of laser elevation is improved by 4.3 cm. The absolute accuracy of laser elevation is increased by 4.5 cm verified by airborne LiDAR point cloud data. Which fully shows that the method in this paper can be used as a method to reduce effectively the random error of laser ranging, and provides an indispensable foundation for the sub-meter elevation measurement accuracy of the GF-7 satellite. full-waveform spaceborne laser ranging accuracy waveform peak method sliding window relative accuracy absolute accuracy Mathematical geography. Cartography LIU Ren verfasserin aut In Acta Geodaetica et Cartographica Sinica Surveying and Mapping Press, 2014 50(2021), 9, Seite 1240-1250 (DE-627)57517014X (DE-600)2445687-1 10011595 nnns volume:50 year:2021 number:9 pages:1240-1250 https://doi.org/10.11947/j.AGCS.2021.20200466 kostenfrei https://doaj.org/article/ea0a139e27854da18a3718bbee1542a5 kostenfrei http://xb.sinomaps.com/article/2021/1001-1595/2021-9-1240.htm kostenfrei https://doaj.org/toc/1001-1595 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4392 GBV_ILN_4700 AR 50 2021 9 1240-1250
spelling	10.11947/j.AGCS.2021.20200466 doi (DE-627)DOAJ076991318 (DE-599)DOAJea0a139e27854da18a3718bbee1542a5 DE-627 ger DE-627 rakwb chi GA1-1776 XIE Junfeng verfasserin aut Sliding window Gaussian fitting algorithm for ranging error suppression of full-waveform spaceborne laser 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The ranging accuracy of spaceborne laser altimeter is one of the main sources that affect the geometric calibration and processing accuracy of the laser.Aiming at the issues of laser ranging extraction lower accuracy and the stability, caused by the quantization error of the full-waveform spaceborne laser analog signal after digital processing, so a sliding window Gaussian fitting algorithm for ranging error suppression of full-waveform spaceborne laser is proposed.This method uses a sliding window to eliminate noise points near the peak, and optimizes the peak value of the waveform to extract a more accurate ranging value.Finally, the GF-7 laser altimeter was used as the test object, the relative and absolute accuracy of laser elevation were compared and verified by using the ice surface, inland lake and the flat ground.The results indicate that, the laser ranging accuracy of the paper algorithm is improved by 7.5 cm compared with the general peak method. Based on the ranging value of the paper method, the relative accuracy of laser elevation is improved by 4.3 cm. The absolute accuracy of laser elevation is increased by 4.5 cm verified by airborne LiDAR point cloud data. Which fully shows that the method in this paper can be used as a method to reduce effectively the random error of laser ranging, and provides an indispensable foundation for the sub-meter elevation measurement accuracy of the GF-7 satellite. full-waveform spaceborne laser ranging accuracy waveform peak method sliding window relative accuracy absolute accuracy Mathematical geography. Cartography LIU Ren verfasserin aut In Acta Geodaetica et Cartographica Sinica Surveying and Mapping Press, 2014 50(2021), 9, Seite 1240-1250 (DE-627)57517014X (DE-600)2445687-1 10011595 nnns volume:50 year:2021 number:9 pages:1240-1250 https://doi.org/10.11947/j.AGCS.2021.20200466 kostenfrei https://doaj.org/article/ea0a139e27854da18a3718bbee1542a5 kostenfrei http://xb.sinomaps.com/article/2021/1001-1595/2021-9-1240.htm kostenfrei https://doaj.org/toc/1001-1595 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4392 GBV_ILN_4700 AR 50 2021 9 1240-1250
allfields_unstemmed	10.11947/j.AGCS.2021.20200466 doi (DE-627)DOAJ076991318 (DE-599)DOAJea0a139e27854da18a3718bbee1542a5 DE-627 ger DE-627 rakwb chi GA1-1776 XIE Junfeng verfasserin aut Sliding window Gaussian fitting algorithm for ranging error suppression of full-waveform spaceborne laser 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The ranging accuracy of spaceborne laser altimeter is one of the main sources that affect the geometric calibration and processing accuracy of the laser.Aiming at the issues of laser ranging extraction lower accuracy and the stability, caused by the quantization error of the full-waveform spaceborne laser analog signal after digital processing, so a sliding window Gaussian fitting algorithm for ranging error suppression of full-waveform spaceborne laser is proposed.This method uses a sliding window to eliminate noise points near the peak, and optimizes the peak value of the waveform to extract a more accurate ranging value.Finally, the GF-7 laser altimeter was used as the test object, the relative and absolute accuracy of laser elevation were compared and verified by using the ice surface, inland lake and the flat ground.The results indicate that, the laser ranging accuracy of the paper algorithm is improved by 7.5 cm compared with the general peak method. Based on the ranging value of the paper method, the relative accuracy of laser elevation is improved by 4.3 cm. The absolute accuracy of laser elevation is increased by 4.5 cm verified by airborne LiDAR point cloud data. Which fully shows that the method in this paper can be used as a method to reduce effectively the random error of laser ranging, and provides an indispensable foundation for the sub-meter elevation measurement accuracy of the GF-7 satellite. full-waveform spaceborne laser ranging accuracy waveform peak method sliding window relative accuracy absolute accuracy Mathematical geography. Cartography LIU Ren verfasserin aut In Acta Geodaetica et Cartographica Sinica Surveying and Mapping Press, 2014 50(2021), 9, Seite 1240-1250 (DE-627)57517014X (DE-600)2445687-1 10011595 nnns volume:50 year:2021 number:9 pages:1240-1250 https://doi.org/10.11947/j.AGCS.2021.20200466 kostenfrei https://doaj.org/article/ea0a139e27854da18a3718bbee1542a5 kostenfrei http://xb.sinomaps.com/article/2021/1001-1595/2021-9-1240.htm kostenfrei https://doaj.org/toc/1001-1595 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4392 GBV_ILN_4700 AR 50 2021 9 1240-1250
allfieldsGer	10.11947/j.AGCS.2021.20200466 doi (DE-627)DOAJ076991318 (DE-599)DOAJea0a139e27854da18a3718bbee1542a5 DE-627 ger DE-627 rakwb chi GA1-1776 XIE Junfeng verfasserin aut Sliding window Gaussian fitting algorithm for ranging error suppression of full-waveform spaceborne laser 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The ranging accuracy of spaceborne laser altimeter is one of the main sources that affect the geometric calibration and processing accuracy of the laser.Aiming at the issues of laser ranging extraction lower accuracy and the stability, caused by the quantization error of the full-waveform spaceborne laser analog signal after digital processing, so a sliding window Gaussian fitting algorithm for ranging error suppression of full-waveform spaceborne laser is proposed.This method uses a sliding window to eliminate noise points near the peak, and optimizes the peak value of the waveform to extract a more accurate ranging value.Finally, the GF-7 laser altimeter was used as the test object, the relative and absolute accuracy of laser elevation were compared and verified by using the ice surface, inland lake and the flat ground.The results indicate that, the laser ranging accuracy of the paper algorithm is improved by 7.5 cm compared with the general peak method. Based on the ranging value of the paper method, the relative accuracy of laser elevation is improved by 4.3 cm. The absolute accuracy of laser elevation is increased by 4.5 cm verified by airborne LiDAR point cloud data. Which fully shows that the method in this paper can be used as a method to reduce effectively the random error of laser ranging, and provides an indispensable foundation for the sub-meter elevation measurement accuracy of the GF-7 satellite. full-waveform spaceborne laser ranging accuracy waveform peak method sliding window relative accuracy absolute accuracy Mathematical geography. Cartography LIU Ren verfasserin aut In Acta Geodaetica et Cartographica Sinica Surveying and Mapping Press, 2014 50(2021), 9, Seite 1240-1250 (DE-627)57517014X (DE-600)2445687-1 10011595 nnns volume:50 year:2021 number:9 pages:1240-1250 https://doi.org/10.11947/j.AGCS.2021.20200466 kostenfrei https://doaj.org/article/ea0a139e27854da18a3718bbee1542a5 kostenfrei http://xb.sinomaps.com/article/2021/1001-1595/2021-9-1240.htm kostenfrei https://doaj.org/toc/1001-1595 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4392 GBV_ILN_4700 AR 50 2021 9 1240-1250
allfieldsSound	10.11947/j.AGCS.2021.20200466 doi (DE-627)DOAJ076991318 (DE-599)DOAJea0a139e27854da18a3718bbee1542a5 DE-627 ger DE-627 rakwb chi GA1-1776 XIE Junfeng verfasserin aut Sliding window Gaussian fitting algorithm for ranging error suppression of full-waveform spaceborne laser 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The ranging accuracy of spaceborne laser altimeter is one of the main sources that affect the geometric calibration and processing accuracy of the laser.Aiming at the issues of laser ranging extraction lower accuracy and the stability, caused by the quantization error of the full-waveform spaceborne laser analog signal after digital processing, so a sliding window Gaussian fitting algorithm for ranging error suppression of full-waveform spaceborne laser is proposed.This method uses a sliding window to eliminate noise points near the peak, and optimizes the peak value of the waveform to extract a more accurate ranging value.Finally, the GF-7 laser altimeter was used as the test object, the relative and absolute accuracy of laser elevation were compared and verified by using the ice surface, inland lake and the flat ground.The results indicate that, the laser ranging accuracy of the paper algorithm is improved by 7.5 cm compared with the general peak method. Based on the ranging value of the paper method, the relative accuracy of laser elevation is improved by 4.3 cm. The absolute accuracy of laser elevation is increased by 4.5 cm verified by airborne LiDAR point cloud data. Which fully shows that the method in this paper can be used as a method to reduce effectively the random error of laser ranging, and provides an indispensable foundation for the sub-meter elevation measurement accuracy of the GF-7 satellite. full-waveform spaceborne laser ranging accuracy waveform peak method sliding window relative accuracy absolute accuracy Mathematical geography. Cartography LIU Ren verfasserin aut In Acta Geodaetica et Cartographica Sinica Surveying and Mapping Press, 2014 50(2021), 9, Seite 1240-1250 (DE-627)57517014X (DE-600)2445687-1 10011595 nnns volume:50 year:2021 number:9 pages:1240-1250 https://doi.org/10.11947/j.AGCS.2021.20200466 kostenfrei https://doaj.org/article/ea0a139e27854da18a3718bbee1542a5 kostenfrei http://xb.sinomaps.com/article/2021/1001-1595/2021-9-1240.htm kostenfrei https://doaj.org/toc/1001-1595 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4392 GBV_ILN_4700 AR 50 2021 9 1240-1250
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callnumber-first	G - Geography, Anthropology, Recreation
author	XIE Junfeng
spellingShingle	XIE Junfeng misc GA1-1776 misc full-waveform spaceborne laser misc ranging accuracy misc waveform peak method misc sliding window misc relative accuracy misc absolute accuracy misc Mathematical geography. Cartography Sliding window Gaussian fitting algorithm for ranging error suppression of full-waveform spaceborne laser
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topic_title	GA1-1776 Sliding window Gaussian fitting algorithm for ranging error suppression of full-waveform spaceborne laser full-waveform spaceborne laser ranging accuracy waveform peak method sliding window relative accuracy absolute accuracy
topic	misc GA1-1776 misc full-waveform spaceborne laser misc ranging accuracy misc waveform peak method misc sliding window misc relative accuracy misc absolute accuracy misc Mathematical geography. Cartography
topic_unstemmed	misc GA1-1776 misc full-waveform spaceborne laser misc ranging accuracy misc waveform peak method misc sliding window misc relative accuracy misc absolute accuracy misc Mathematical geography. Cartography
topic_browse	misc GA1-1776 misc full-waveform spaceborne laser misc ranging accuracy misc waveform peak method misc sliding window misc relative accuracy misc absolute accuracy misc Mathematical geography. Cartography
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title	Sliding window Gaussian fitting algorithm for ranging error suppression of full-waveform spaceborne laser
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title_full	Sliding window Gaussian fitting algorithm for ranging error suppression of full-waveform spaceborne laser
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title_sort	sliding window gaussian fitting algorithm for ranging error suppression of full-waveform spaceborne laser
callnumber	GA1-1776
title_auth	Sliding window Gaussian fitting algorithm for ranging error suppression of full-waveform spaceborne laser
abstract	The ranging accuracy of spaceborne laser altimeter is one of the main sources that affect the geometric calibration and processing accuracy of the laser.Aiming at the issues of laser ranging extraction lower accuracy and the stability, caused by the quantization error of the full-waveform spaceborne laser analog signal after digital processing, so a sliding window Gaussian fitting algorithm for ranging error suppression of full-waveform spaceborne laser is proposed.This method uses a sliding window to eliminate noise points near the peak, and optimizes the peak value of the waveform to extract a more accurate ranging value.Finally, the GF-7 laser altimeter was used as the test object, the relative and absolute accuracy of laser elevation were compared and verified by using the ice surface, inland lake and the flat ground.The results indicate that, the laser ranging accuracy of the paper algorithm is improved by 7.5 cm compared with the general peak method. Based on the ranging value of the paper method, the relative accuracy of laser elevation is improved by 4.3 cm. The absolute accuracy of laser elevation is increased by 4.5 cm verified by airborne LiDAR point cloud data. Which fully shows that the method in this paper can be used as a method to reduce effectively the random error of laser ranging, and provides an indispensable foundation for the sub-meter elevation measurement accuracy of the GF-7 satellite.
abstractGer	The ranging accuracy of spaceborne laser altimeter is one of the main sources that affect the geometric calibration and processing accuracy of the laser.Aiming at the issues of laser ranging extraction lower accuracy and the stability, caused by the quantization error of the full-waveform spaceborne laser analog signal after digital processing, so a sliding window Gaussian fitting algorithm for ranging error suppression of full-waveform spaceborne laser is proposed.This method uses a sliding window to eliminate noise points near the peak, and optimizes the peak value of the waveform to extract a more accurate ranging value.Finally, the GF-7 laser altimeter was used as the test object, the relative and absolute accuracy of laser elevation were compared and verified by using the ice surface, inland lake and the flat ground.The results indicate that, the laser ranging accuracy of the paper algorithm is improved by 7.5 cm compared with the general peak method. Based on the ranging value of the paper method, the relative accuracy of laser elevation is improved by 4.3 cm. The absolute accuracy of laser elevation is increased by 4.5 cm verified by airborne LiDAR point cloud data. Which fully shows that the method in this paper can be used as a method to reduce effectively the random error of laser ranging, and provides an indispensable foundation for the sub-meter elevation measurement accuracy of the GF-7 satellite.
abstract_unstemmed	The ranging accuracy of spaceborne laser altimeter is one of the main sources that affect the geometric calibration and processing accuracy of the laser.Aiming at the issues of laser ranging extraction lower accuracy and the stability, caused by the quantization error of the full-waveform spaceborne laser analog signal after digital processing, so a sliding window Gaussian fitting algorithm for ranging error suppression of full-waveform spaceborne laser is proposed.This method uses a sliding window to eliminate noise points near the peak, and optimizes the peak value of the waveform to extract a more accurate ranging value.Finally, the GF-7 laser altimeter was used as the test object, the relative and absolute accuracy of laser elevation were compared and verified by using the ice surface, inland lake and the flat ground.The results indicate that, the laser ranging accuracy of the paper algorithm is improved by 7.5 cm compared with the general peak method. Based on the ranging value of the paper method, the relative accuracy of laser elevation is improved by 4.3 cm. The absolute accuracy of laser elevation is increased by 4.5 cm verified by airborne LiDAR point cloud data. Which fully shows that the method in this paper can be used as a method to reduce effectively the random error of laser ranging, and provides an indispensable foundation for the sub-meter elevation measurement accuracy of the GF-7 satellite.
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title_short	Sliding window Gaussian fitting algorithm for ranging error suppression of full-waveform spaceborne laser
url	https://doi.org/10.11947/j.AGCS.2021.20200466 https://doaj.org/article/ea0a139e27854da18a3718bbee1542a5 http://xb.sinomaps.com/article/2021/1001-1595/2021-9-1240.htm https://doaj.org/toc/1001-1595
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doi_str	10.11947/j.AGCS.2021.20200466
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Sliding window Gaussian fitting algorithm for ranging error suppression of full-waveform spaceborne laser

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