发明名称 |
METHOD FOR MEASURING THE DISTANCE TO AT LEAST ONE TARGET |
摘要 |
To measure the distance to targets, local maxima exceeding a threshold (.epsilon.) and being associated with a correlation function (f) are determined, the reference values of which are obtained from scaler products of a received signal (e), produced by reflections of an optical pulse by the targets, and a number of comparison functions, copies of a reference function (r) which are shifted as a function of time, and the transit times of the reflections are derived from the time-related shifts of the corresponding comparison functions. By interpolation with respect to the time-related shifts or optimization thereof, for example by adjusting them so that the orthogonal distance of the received signal (e) from the vector space which is spanned by the corresponding comparison functions is a minimum, the transit times can be determined even more accurately.
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申请公布号 |
CA2304083(A1) |
申请公布日期 |
2000.10.06 |
申请号 |
CA20002304083 |
申请日期 |
2000.04.05 |
申请人 |
LEICA GEOSYSTEMS INC. |
发明人 |
RAMSEIER, ERNST;RUTISHAUSER, ESTHER;GACHTER, BERNHARD;BETSCHON, CHRISTIAN;ORAWEZ, GEORG;AEBISCHER, BEAT |
分类号 |
G01S7/497;G01S17/10;(IPC1-7):G01S17/08 |
主分类号 |
G01S7/497 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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