Position Estimation of Three-Dimensional Radars with Bias Errors.
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Accession number;03A0117011
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| Title;Position Estimation of Three-Dimensional Radars with Bias Errors. |
| Author;
OKADA TAKAMITSU
(Mitsubishi Electric Corp., Information Technol. R&D Center, JPN)
OKAMURA ATSUSHI
(Mitsubishi Electric Corp., Information Technol. R&D Center, JPN)
KOSUGE YOSHIO
(Mitsubishi Electric Corp., Information Technol. R&D Center, JPN)
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Journal Title;IEICE Transactions on Communications (Japanese Edition)
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Journal Code:S0622C
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ISSN:1344-4697
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VOL.J86-B;NO.2;PAGE.245-254(2003)
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| Figure&Table&Reference;FIG.11, REF.7 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;On multi-target tracking system intgrating plural radars, radar observation coordinate error, radar location error, and so on caused by alignement of every radars largely affects its tracking features. In this paper, was proposed a method to estimate bias error of relative location at plural three-dimensional radars by using Kalman filter, by carrying out linear approximation of location difference of aircrafts simultaneously observed by the radars under a supposition of neglecting the former's error. When displacing plural radars at remote places, as reference direction and absolute horizontal plane of coordinates based on every radars are inclined by roundness of the earth, estimation precision of the bias error is deteriorated. Therefore, especially, by compensating the inclination of coordinate axis based on roundness of the earth, the bias error of relative radar location is estimated. And, it was shown by simulation that by calculating altitude on sea of an aircraft from the observation values (distance, incidence angle), it was compared with that of a method removing shadow of inclination of the cordinate axis, its estimation precision could be improved 3.7 and 19.5 m at 10 and 30 km of radar standoff distances, respectively. |
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