Visual Intelligence US Patent # 7,212,938
A method of using a self-locking travel pattern to achieve in-travel calibration of remote sensors.
The present invention provides a method to calibrate an on-board remote sensing system using a self-locking travel pattern and target remote sensing data.
The self-locking travel pattern includes a number of parallel travel lines having overlapping swath widths between adjacent travel lines. The overlapping swath widths are used to determine the boresight angles and range offset of the remote sensor device.
In addition, the method can be used to generate estimated horizontal and vertical displacement errors. These estimated errors can be used as correction factors for the range offset and boresight angles.