Methods of choosing the additional bases of aerial structures of multi-base phase direction finders to decrease the probability of registering false bearings

Annotation: The phase direction finder with an aerial system in the form of linear lattice is considered in the article. It is intended to determine the angular position of the emission source in the azimuth plane. The direction finder operation is based on the assumption of the normal distribution of phase error probabilities. The assessment of probabilities of false bearing is carried out. The methods of choosing the additional bases of the aerial structures of multi-base phase direction finders by the criterion of the probability minimum of false bearing are suggested. The methods are based on choosing the additional number of bases according to a certain algorithm. The analytical assessment of reducing the probability of registering the false bearings is presented. The testing of the phase direction finder characteristics by mathematical modelling is carried out.

Keywords: direction finder, mathematical expectation, ambiguity resolution, estimation bearing