THE EFFECTS OF SENSOR ERRORS IN CERTAIN MARINE COLLISION AVOIDANCE AND THREAT ASSESSMENT SYSTEMS

The paper distinguishes between optimal and practical collision avoidance systems and selects a set of variables that can be used to compute collision avoidance (C/A) parameters in practical systems. Specifically, the paper studies the effects of sensor errors upon the calculation of the passing distance at CPA, the point-of-possible-collision (PPC), and range over range-rate (TAU). The possible sources of error are summarized and characterized as deterministic or random, dependent or independent, correlated or decorrelated, and fixed bias. A computer program is described that makes use of a Kalman filter to compute the effects of error upon C/A parameters. The results of computer runs are given that show that most errors have insignificant effects. The others can be reduced or removed if required. A means is provided for estimating a part of the economic return on investment in a computerized collision avoidance system.

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    Institute of Navigation

    815 14th Street, NW
    Washington, DC  USA  20005
  • Authors:
    • Riggs, R F
  • Publication Date: 1974-3

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Filing Info

  • Accession Number: 00057051
  • Record Type: Publication
  • Source Agency: Institute of Navigation
  • Files: TRIS
  • Created Date: Jul 31 1974 12:00AM