Adaptive blanking interface apparatus for self-protection jamming equipment employed in conjunction with radar systems

摘要

There is disclosed an interface apparatus which enables a radar jamming system to operate in conjunction with a number of different radar warning receivers. The interface enables the jamming apparatus to couple to various types of radar warning receivers and to specify proper blanking intervals for each of the receivers according to the type of blanking required and the operation of such receivers. The system employs a look-through blanking bus which essentially consists of six data lines and a strobe. The data on this bus is fully encoded to provide 64 individual command codes. The command codes are established by the particular RWR and are made available via the interface to the jamming system over a multiplexed bus. This bus operates to initially specify the RWR by determining the various codes which are transmitted by the RWR. For each code transmitted there is an identification number which defines frequency ranges while providing a field to determine the real time action to be taken upon receipt of the code which is transmitted over the look-through blanking bus. In this manner by determining the type of data received on the look-through bus the jamming apparatus can determine which type of RWR it is connected to and therefore determine what blanking information is necessary in order to accommodate proper system operation.