Target Positioning Accuracy Analysis Using Geo-Referenced Sidescan Sonar Data, RMS TDP Builds 2 and 3

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Authors
  1. Crawford, A.M.
  2. Myers, V.
  3. Hopkin, D.
Corporate Authors
Defence R&D Canada - Atlantic, Dartmouth NS (CAN)
Abstract
The Remote Minehunting System Technology Demonstrator Project (RMS TDP) was a three-year program with the goal of providing recommendations to the Canadian Navy on semi-submersible-based minehunting technology. A key component of the project was a series of sea trials during which ongoing improvements to design and operation were tested. During the second and third of these trials, Builds 2 and 3, a quantity of sidescan sonar data over deployed and pre-existing target arrays was collected. The subsequent analysis of this data provides a method for assessing the RMS performance in meeting the critical initial specifications on target positioning accuracy of < 10 m rms. The results of this analysis using geo-referenced sonar data show positioning accuracy that meets the specifications, with Build 2 having a positioning accuracy of 5 m rms, and Build 3, marginally larger at 7-8 m rms. An important difference between the results for the Builds is that for Build 2, the sidescan sonar data were geo-referenced using a simple straight-cable model to determine towfish positions, where the Build 3 analysis used towfish position determined by an onboard Inertial Navigation System (INS). The only slightly poorer positioning accuracy for Build 3 is due to observed wander of the towfish INS, however attaining this level of positioning accuracy with any such system is noteworthy.

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Keywords
Remote Minehunting System (RMS)
Report Number
DRDC-ATLANTIC-TM-2003-210 — Technical Memorandum
Date of publication
01 Feb 2004
Number of Pages
56
DSTKIM No
CA023848
CANDIS No
521341
Format(s):
CD ROM

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