UDC  621.396

SELF-COMPENSATING METHOD OF PASSIVE LOCATION UNDER CONDITIONS OF PRIOR UNCERTAINTY WITH THE USE OF CONICAL SURFACES OF EMITTING TARGET POSITION

 

Yu. G. Bulychev, I. L. Sirenko

JSC «All-Russian Scientific Research Institute «Gradient», Sokolova Av., 96, Rostov-on-Don  344000, Russia

 

The paper is received on March 20, 2019

 

Abstract. A multi-station passive ranging system comprising several direction finders is considered, while unknown systematic measurement errors in the azimuth and elevation channels that predetermines the need to solve coordinate measurement task under conditions of prior uncertainty are considered acceptable. For this case, a computationally efficient self-compensating (in regard to systematic errors) method for determining the motion variables of this target taking into account the invariants of the adopted motion model of the emitting target and the position cones corresponding to the measurements of the elevation angle of all direction finders has been developed. Whereby, the traditional extension of the state space is not used. The developed method is focused either on the rectilinear uniform motion model which corresponds to the observation segment of the patrolled target, or on a complex model in the form of several sections of such motion. Alongside with the above systematic errors in azimuth channels, the effect of fluctuation errors admitting statistical description within the normal probability law is also considered. The issues of observability and accuracy of the developed method are discussed. The useful practical recommendations are provided.

Key words: multi-station ranging system, direction finder, azimuth, elevation angle, emitting target, surface of position, conical surface of position, systematic measurement error, rectilinear uniform motion model, invariant, self-compensation, observability, accuracy.

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For citation:

Yu. G. Bulychev, I. L. Sirenko. Self-compensating method of passive location under conditions of prior uncertainty with the use of conical surface of emitting target position. Zhurnal Radioelektroniki - Journal of Radio Electronics. 2019. No. 3. Available at http://jre.cplire.ru/jre/mar19/12/text.pdf

DOI  10.30898/1684-1719.2019.3.12