EVALUATION OF GPS-AIDED ARTILLERY POSITIONING AND ORIENTATION METHODS

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Authors
  1. Lachapelle, G.
  2. Cannon, M.E.
  3. Bird, J.
Corporate Authors
Defence Research Establishment Ottawa, Ottawa ONT (CAN);Calgary Univ, Calgary ALTA (CAN) Dept of Geomatics Engineering
Abstract
The artillery survey requirements ratified by Canada through NATO (STANAG 2373) call for a positioning accuracy of 10 m (PE) in fixation (horizontal) and altitude (height), and an orientation (heading) accuracy of 0.3 mil (1 arcmin) to 0.6 mil (PE), depending on the type of guns used. These accuracy levels are to be achieved in a maximum observation time of 20 minutes. The positioning requirement is currently met by Canadian Forces artillery personnel by using conventional survey methods which are labour intensive and requires the availability of known survey points in the area. The heading requirement is met effectively using gyrotheodolites. A cost-effective alternative to the above methods is proposed herein. It consists of GPS in stand-alone mode, complemented by automated survey methods where required. Using emerging low cost, portable, and robust GPS user equipment, the artillery positioning and heading requirement can be met in minutes. The heading requirement is met using a twin-antennas GPS system. In situations where severe signal masking due to concealment requirements may preclude the use of GPS, the transfer of position and heading from nearby points where GPS signal reception is possible can be carried out using conventional survey methods, which can also be used as backup in the unlikely event of GPS failure. TRUNCATED
Keywords
Artillery surveys
Date of publication
30 Jun 1997
Number of Pages
11
Reprinted from
Canadian Aeronautics and Space Journal, vol 43, no 2, 1997, p 83-91
DSTKIM No
98-00030
CANDIS No
506721
Format(s):
Hardcopy;Document Image stored on Optical Disk

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