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Algorithms of two-stage multiscan detection of target based on the incoherent accumulation using the “l/n – d” criterion have been obtained. The primary detection is performed at the first stage with sufficiently high probability of false alarm. At the second stage the tracking task is solved by using the “strongest neighbor” criterion and the incoherent interscan accumulation of decision statistics is performed. Expressions for probabilities of the true detection of target and false alarm of the algorithm using the “3/5 – 2” criterion were obtained. This algorithm was analyzed by using the statistical simulation for a case of multiscan target detection from data of the radar measuring the range and radial velocity of target.

The paper presents a verification procedure developed for the quadrature processing unit of radar with stepwise frequency modulation of the probing signal. The computer simulation and experiments on verifying the developed and manufactured quadrature processing unit were performed for the cases of placing a single stationary point object at distances 9 and 24 meters. The effect of inaccuracy in setting the phase shift between the reference oscillations of quadrature mixer on the waveform of spatial reflectogram was investigated by using the developed verification procedure; and it was shown that phase shift errors could lead to the generation of false responses.

This paper provides data on characteristics of asynchronous half-duplex information exchange and relative orientation station which is a part of multifunction radar passive-active complex intended for monitoring above-water situation.