Results of Operational Testing of LASS-II (Litton Auto-Surveyor System) Systems.
Final rept. Aug 84-May 85,
DEFENSE MAPPING AGENCY WASHINGTON DC
Pagination or Media Count:
The Defense Mapping Agency has been active in the field of inertial surveying since 1975. More recently, delivery was taken of two Litton Auto-Surveyor System II LASS-II units. This paper describes the testing carried out with these two systems over the Cheyenne IPS Test Course and presents a statistical analysis of the results obtained. New mathematical models for the RMS error of interpolated position and height as a function of traverse length are proposed. The Litton Auto-Surveyor System II is an upgraded version of the Position and Azimuth Determining System intended for applications in surveying and geodesy. The hardware features which set a LASS-II apart from a PADS are 1 gyros screened to tighter performance specifications, 2 modifications to the controldisplay unit CDU, 3 addition of a digital tapedeck and associated interface electronics, and 4 a coat of paint change from olive drab to off-white which, aside from giving the LASS-II a distinctive look, has the functional purpose of aiding with the management of heat dissipation.