Method for directly positioning ground target by self-checking POS
A target positioning and self-checking technology, applied in satellite radio beacon positioning systems, instruments, surveying, mapping and navigation, etc., can solve problems such as increased production costs, inability to guarantee completion of aerial photography, and inability to truly reflect system errors. The effect of reducing workload, technical difficulty and cost
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[0055] The present invention provides a method for self-checking and calibrating POS to directly locate the ground target, comprising the following steps:
[0056] Step 1, starting from the collinear conditional equation, derive the theoretical relationship between the error of the image's outer orientation element and the error of the target point, and construct a POS system error compensation model based on this theoretical relationship;
[0057] Step 2, introduce the POS system error compensation model into the multi-slice space forward intersection strict equation based on the collinear condition, and construct a strict adjustment model for self-checking and correcting POS direct ground target positioning;
[0058] Step 3, use the principle of least squares adjustment to simultaneously solve the additional parameters and the three-dimensional ground coordinates of the points to be fixed, and realize the self-checking and calibration POS with additional parameters to directl...
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