The radar reconnaissance equipments adopting instantaneous frequency measurement(IFM) technology can t correctly measure the frequency of radar singals which arrive simultaneously and multi-carrier appearing in monopulse.

Many shortcomings of radar reconnaissance equipment in the complicated electromagnetic environment are listed, the reasons produced these problems are analyzed ,and the methods to improve the equipment performance are provided.

The signals environment simulation is an important measure in performance testing of the radar reconnaissance equipments.

This paper analyzes scouting efficiency and educes calculating model based on Markov process according to the characteristics of moving target reconnaissance radar and its finding steps, and gives application example.

The implementation scheme of IF digitization for reconnaissance radar is given.

Applications of Complex Programmable Logic Device (CPLD) in short range surveillance radar are also introduced.

The paper begins with the practice of the simulate test system for radar reconnaissance receivers, introduces the formation of the system in brief, analyses the influence factor of the test result from every equipment of the system, accounts for the process and method of solving practical problem using analytic hierarchy process.