ERROR BOUNDS ON ESTIMATED AZIMUTHAL AND VERTICAL ARRIVAL ANGLES AT A ROTATABLE HORIZONTAL LINE ARRAY

Authors
  1. Theriault, J.A.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN)
Abstract
A Horizontal Line Array (HLA) is subject to left-right bearing ambiguity and also to bearing bias caused by non-zero vertical arrival angles. However, if a second observation is made with the array rotated to a different orientation, the azimuthal and vertical arrival angles may be estimated. For two observations where the source-array geometries are static, a closed-form solution is available. For the solution error, a closed-form approximation is also available, but only if the observation errors are small. The report deals with the case of moderate to large observation errors and presents error bounds on the estimated azimuthal and vertical arrival angles. As well, several examples are included.
Report Number
DREA-TM-88-202 — Technical Memorandum
Date of publication
15 Feb 1988
Number of Pages
42
DSTKIM No
88-01017
CANDIS No
54257
Format(s):
Microfiche filmed at DSIS;Originator's fiche received by DSIS;Hardcopy

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