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- W2377832174 abstract "The algorithm of tri-station TDOA(time difference of arrival) three-dimensional location for sea level or near earth targets using aerial base platforms is studied,especially for the situation of many solutions and selection ambiguity in the calculation process of traditional algorithm.Based on the high precious WGS-84 earth ellipsoid model,building a local reference coordinate system based on the coverage area of the aerial base stations is presented.In the local reference coordinate system,the coordinate dimension of the unknown target is reduced by coordinate conversion and approximate process.As a result,the tri-station TDOA three-dimensional location of target can be accomplished according to the traditional TDOA location algorithm for two-dimensional target.And then the precision of the location calculation results can be further improved by iteration operation.The location results of the target in the geocentric coordinate system can be obtained by coordinate inverse conversion.The problem of many solutions and selection ambiguity can be resolved for the target area which we concerned,owing to that solving quartic equation can be avoided in this algorithm,the geometric meaning of each coordinate component is obvious and solution selection is quite easy.Besides,this method does not need other auxiliary measurement information such as measuring azimuth.The situation of errors in solution selection does not exist in the simulation operation. And the simulation results also show that the algorithm can satisfy the demand of application." @default.
- W2377832174 created "2016-06-24" @default.
- W2377832174 creator A5021311834 @default.
- W2377832174 date "2010-01-01" @default.
- W2377832174 modified "2023-09-23" @default.
- W2377832174 title "An Algorithm for the Tri-Station TDOA Location Based on local reference Coordinate System" @default.
- W2377832174 hasPublicationYear "2010" @default.
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