Method for eliminating swing error of three-dimensional laser imager
The invention discloses a method for eliminating the swing error of a three-dimensional laser imager, which can effectively eliminate the influence of the swing error on the measurement precision. The method comprises the following steps: (1) measuring the same distance position by adopting two tran...
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| creator | PEI DAMING ZHAI YAYU SONG PING WANG XUANQUAN |
| description | The invention discloses a method for eliminating the swing error of a three-dimensional laser imager, which can effectively eliminate the influence of the swing error on the measurement precision. The method comprises the following steps: (1) measuring the same distance position by adopting two transmitting signals with the phase difference of pi/4, acquiring phase values measured twice, and generating a measurement vector; (2) evaluating the noise covariance matrix in combination with related Kalman filtering and a maximum likelihood criterion method, and eliminating random errors in the working process of the three-dimensional laser imager by taking a measurement vector as an input value and a state vector as an output value; and (3) respectively taking the two measurement vector sequences obtained in the step (1) as input values of the step (2), outputting a state vector, returning to the step (1) for processing, generating a state vector sequence, calculating a measurement phase value, and respectively pr |
| format | Patent |
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The method comprises the following steps: (1) measuring the same distance position by adopting two transmitting signals with the phase difference of pi/4, acquiring phase values measured twice, and generating a measurement vector; (2) evaluating the noise covariance matrix in combination with related Kalman filtering and a maximum likelihood criterion method, and eliminating random errors in the working process of the three-dimensional laser imager by taking a measurement vector as an input value and a state vector as an output value; and (3) respectively taking the two measurement vector sequences obtained in the step (1) as input values of the step (2), outputting a state vector, returning to the step (1) for processing, generating a state vector sequence, calculating a measurement phase value, and respectively pr</description><language>chi ; eng</language><subject>ANALOGOUS ARRANGEMENTS USING OTHER WAVES ; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES ; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES ; MEASURING ; MEASURING ANGLES ; MEASURING AREAS ; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS ; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS ; PHYSICS ; RADIO DIRECTION-FINDING ; RADIO NAVIGATION ; TESTING</subject><creationdate>2023</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20230203&DB=EPODOC&CC=CN&NR=115685163A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76516</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20230203&DB=EPODOC&CC=CN&NR=115685163A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>PEI DAMING</creatorcontrib><creatorcontrib>ZHAI YAYU</creatorcontrib><creatorcontrib>SONG PING</creatorcontrib><creatorcontrib>WANG XUANQUAN</creatorcontrib><title>Method for eliminating swing error of three-dimensional laser imager</title><description>The invention discloses a method for eliminating the swing error of a three-dimensional laser imager, which can effectively eliminate the influence of the swing error on the measurement precision. 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| language | chi ; eng |
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| subjects | ANALOGOUS ARRANGEMENTS USING OTHER WAVES DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING |
| title | Method for eliminating swing error of three-dimensional laser imager |
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