Method and device for evaluating flight altitude quality of aviation gravity instruments

Abstract

An embodiment of the present invention provides a method and device for evaluating the flight height quality of an airborne gravity instrument. The method first obtains the three-dimensional survey network file of the area to be measured and the actual ground clearance information of each processing node of the airborne gravity instrument on the current processing survey line. ; Then determine the height information of the target node on the target survey line corresponding to each processing node and matched with the current processing survey line, and based on the actual ground height information of each processing node and the target corresponding to each processing node The height information of the nodes, determine the theoretical ground clearance information of each processing node; finally, based on the actual ground clearance information and theoretical ground clearance information corresponding to each processing node, determine the average absolute height difference information of the current processing survey line , and using the average absolute altitude difference information, an accurate assessment of the flight altitude quality of the airborne gravity instrument on the current processing survey line can be realized.

Description

technical field [0001] The invention relates to the technical field of aviation gravity exploration, in particular to a method and device for evaluating the flight height quality of an aviation gravity instrument. Background technique [0002] Airborne gravity prospecting is an important part of aerial geophysical prospecting, and it is a fast, effective and efficient method to obtain gravity anomalies. Aeronautical gravity prospecting is mainly to carry the aerial gravity instrument on the flight platform for observation. Since the gravity anomalies obtained by the aerial gravity instrument at different flight altitudes are different, it often leads to uncertainty in the evaluation of the total accuracy of the altitude. [0003] Although the current airborne gravity survey has corresponding flight height statistics and total height accuracy statistics, it cannot evaluate the height accuracy during flight. With the application of three-dimensional survey network design, the...

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Problems solved by technology

However, the average height above the ground determined in this way For areas with complex terrain, it is impossible to accurately evaluate the quality of flight height during survey line flight

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