METHOD FOR CONSTRUCTION OF TWO-DIMENSIONAL RADAR IMAGE OF AIR TARGET

摘要

FIELD: radio detection and ranging, applicable in coherent-pulse tracking radars with multifrequency sounding for production of a two-dimensional radar image and identification of an air target with the aid of it.;SUBSTANCE: distribution of target reflectivity in two mutually perpendicular co-ordinates: longitudinal and lateral ranges is meant under radar image. The method is based on the use of two radars, one of them should have a possibility of frequency re-turning from pulse to pulse. It is offered to use multifrequency sequences of pulses, the frequency in each of them from pulse to pulse changes according to the low of accidental errors. It enhances the noise immunity of the method. For calculation of the target turning angular rate at trajectory instability of its flight it is offered to carry out a correlation analysis of the reflected signals in two radars and compare the correlation coefficient laws of both radars. The calculated target, turning angular rate is used for lateral scaling of the two-dimensional radar image.;EFFECT: provided identification of targets of different classes according to their geometric dimensions.;6 dwg