ON THE CALCULATION OF BEARING BIAS IN MULTI-OBSERVER TRACKING DATA. PART I: THEORY OF THE ALGORITHM

Authors
  1. Sutherland, W.R.S.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN);Sutherland (W R S) and Associates, Halifax NS (CAN)
Abstract
The report considers the problem of estimating the track of a moving object along a straight-line track based on directional bearing data from an arbitrary number of observers. The bearing data for each observer is assumed to contain random errors which may have a consistent (but unknown) bias. The motion of each observer is assumed to be known. Two different methods are described for calculating the parameters of the track together with the biases of the observers. The first method finds the track which is closest to the cross-fix positions as determined by the bearings from a pair of observers. The second method finds the track which requires the least angular corrections to the bearing data for an arbitrary number of observers. Both methods are illustrated by an example with four observers. The computations are performed by the Fortran program BIAS2.FOR which is described separately in part II of this report.
Report Number
DREA-CR-89-418-PT-1 — Contractor Report; See also Part II (DSIS 89-03857)
Date of publication
15 Mar 1989
Number of Pages
29
DSTKIM No
89-03856
CANDIS No
61750
Format(s):
Hardcopy;Originator's fiche received by DSIS

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