Evaluation of the Position and Azimuth Determining System's Potential for Higher Accuracy Survey

摘要

This paper reports on tests conducted to evaluate the accuracy potential of the U.S. Army Field Artillery's inertial survey system (Position and Azimuth Determining System AN/USQ-70). The tests were conducted by researchers at the U.S. Army Engineer Topographic Laboratories starting in the summer 1981. The test results reported include position, height and gravity anomaly. Also discussed is a post-mission least squares adjustment technique which was applied to the test results and which should have application to other inertial survey system missions. The Position and Azimuth Determining System (PADS) is a self-contained surveying system which provides fourth- and fifth-order control for U.S. Army Artillery surveys. The PADS is essentially a velocity aided inertial navigation system which has been designed to provide positional accuracy to 20 meters circular error probable (CEP) and height accuracy to 10 meters probable error (PE) over a 6-hour mission which starts at a 'known' survey control point.