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1.发明授权
公开(公告)号：US5654635A
公开(公告)日：1997-08-05
申请号：US573372
申请日：1995-12-15
CPC分类号： G01C17/38
摘要： The present invention relates to a method and to a device (1) for correcting measurement errors of a magnetometer (2) mounted on a vehicle (3). According to the invention:a theoretical corrective model [A].Hm+a.Hm'+Hp=[M].H is defined, in which [A], a and H are elements to be determined, Hm is the measured field, Hm' the time derivative of Hm, H the effective field and [M] a transformation matrix;a vector error E=[M].H-([A].Hm+a.Hm'+Hp) is defined;the square of the error thus defined is determined; andthe coefficients of the model which minimize the sum of the squares of the errors for all the measurements taken are identified.
摘要翻译： 本发明涉及一种用于校正安装在车辆（3）上的磁力计（2）的测量误差的方法和装置（1）。 根据本发明：定义了理论校正模型[A] .Hm + a.Hm'+ Hp = [M] .H，其中[A]，a和H是要确定的元素，Hm是测量场 Hm'为Hm的时间导数，H为有效场，[M]为变换矩阵; 定义矢量误差E = [M] .H - （[A] .Hm + a.Hm'+ Hp） 确定如此定义的误差的平方; 并且识别最小化所有测量的误差的平方和的模型系数。
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2.发明授权
公开(公告)号：US5682335A
公开(公告)日：1997-10-28
申请号：US631703
申请日：1996-04-09
IPC分类号： G01C17/38 , G01R33/025 , G01C21/00
CPC分类号： G01C17/38 , G01R33/025
摘要： The present invention relates to a method and a device for correcting measurement errors of a magnetometer mounted on a vehicle. According to the method, a theoretical corrective model is defined in accordance with the following equation: ##EQU1## where �A!, �C!i and Hp are elements to be determined, Hm is the measured field, H the effective field, and �M! is a transformation matrix, and in which a vector error is defined in accordance with the following equation: ##EQU2## where the square of the error thus defined is determined and the coefficients of the model which minimize the sum of the squares of the error moduli for all the measurements taken are identified.
摘要翻译： 本发明涉及一种用于校正安装在车辆上的磁强计的测量误差的方法和装置。 根据该方法，根据以下等式定义理论校正模型：其中[A]，[C] i和Hp是要确定的元素，Hm是测量场，H是有效场， [M]是变换矩阵，其中矢量误差根据以下等式定义：
其中确定了如此定义的误差的平方，并且模型的系数最小化了 识别所有测量的误差模量。
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