V.V. Vinogradov - Ph.D. (Eng.), Head of Department, JSC "MSDB "Almaz-Antey?. E-mail: finn-vvv@mail.ru
A.L. Kovalchuk - Leading Programming Engineer, JSC "MSDB "Almaz-Antey -
S.A. Perevezencev - Leading Engineer, JSC "MSDB "Almaz-Antey?

The present article concerns a high repetition rate high-PRF pulse trains digital processing that uses an ADP201cP5 digital processing unit. The ADP201cP5 unit is a platform which some gadgets are installed on. They are ADMDDC416100 digital receiver submodule, two Virtex4-type FPGA ones and a processor cluster consisting of five TigerSHARC ADSP-TS201S signal processors. The field programmable gate arrays implement some continuous signal optimum processing operations. Their result is produced with a so-called range-speed matrix. The TigerSHARC signal processors determine a target marks detection procedure that leans on the produced range-speed matrix. This action allows to learn some necessary values that enable assessments for ambiguous range and Doppler frequency (radial velocity). Developing the TigerSHARC processors software has made it clear that the non-infringement of the radar operation cyclogram using ADP201cP5 unit is necessary to implement the target marks detection operations within the range-speed matrix admitting not more than 2 ms. For this purpose a particular search algorithm has been developed with operating time meeting a assigned time interval.