Patent ID: 7451059
Filing Date: 2008-11-11
Classification: G01C,G01S

Abstract:
1. A method for obtaining a true azimuth heading for correcting a coarse azimuth heading measured from an observation position to a specific selected target by operating a data acquisition system disposed at the observation position, comprising: a computer module running computer programs including at least one dedicated computer program and at least one map, a computer display coupled to the computer module for: a sighting device aimed at the specific selected target and coupled to the computer module for input therein of data including location data and target data, the sighting device including: the method comprising the steps of: feeding input data into the computer module including location data, target data and associated errors limits, and operating the computer module for: prompting the operator to search within the search zone limits shown on the display module for the true location of the specific selected target, which when found and indicated, operates the computer module for: operating the at least one dedicated computer program to calculate and accept the sighting device's heading aimed at the specific selected target as the true azimuth, to feedback the true azimuth to the sighting device, and to display calculation result data, whereby the data acquisition system provides true azimuth from which a true North direction may be derived and used as input for further operation.