Target localization and tracking from Doppler-shift measurements

Author

Chan, Yiu-Tong ; Jardine, Frederick L.

Author_Institution

Dept. of Electr. & Comput. Eng., R. Mil. Coll. of Canada, Kingston, Ont., Canada

Volume

15

Issue

3

fYear

1990

fDate

7/1/1990 12:00:00 AM

Firstpage

251

Lastpage

257

Abstract

It is possible to localize a nonmaneuvering moving source radiating a constant frequency tone from measurements of the Doppler-shifted frequency at several sensors. Due to the nonlinear nature of the problem, it is necessary to find the solution by grid searches. However, if measurements of the rates of frequency changes are available, the search is only in three dimensions instead of the normal five in source frequency, its x-y positions, and speeds. The validity of combining frequency and frequency-rate measurements is confirmed with simulation studies. The overall system includes a least-squares track-sort algorithm to differentiate the true track from the extraneous track, and a Kalman tracker for the prediction of future source positions, thereby reducing the grid search size. An error analysis relating localization accuracy to uncertainties in frequency measurements and sensor positions is also given

Keywords

Doppler effect; Kalman filters; error analysis; estimation theory; frequency measurement; least squares approximations; position measurement; tracking; Doppler-shift measurements; Kalman tracker; error analysis; frequency-rate measurements; grid searches; least-squares track-sort algorithm; sensor positions; tracking; variance analysis; Ear; Error analysis; Frequency measurement; Geometry; Kalman filters; Military computing; Position measurement; Sonar detection; Target tracking; Velocity measurement;

fLanguage

English

Journal_Title

Oceanic Engineering, IEEE Journal of

Publisher

ieee

ISSN

0364-9059

Type

jour

DOI

10.1109/48.107154

Filename

107154