A Study Of Assistant Decision-making For Radar Jamming

Radar Jamming Assistant Decision-making System(RJADS) utilized Math, Operations research, Management, computer technology, AI technology and Network technology etc, it could handle masses of battlefield information data in high speed and high efficiency, formulate the jamming alternative plan, which is important reference for operational commander. With comprehensive knowledge, intelligent reasoning, fast response characteristics, Assistant Decision-making System has tremendous applicable value in the military field, especially in the field of electronic countermeasure. The paper took the air defense warfare as background, studied the constitution and key technology of RJADS. The major work and conclusions of present paper are outlined as follows.Firstly, the paper introduced technical characteristics, working principle and main application of three kinds of advanced radar working system, which were the pulse compression radar, the pulse doppler radar and the frequency-agile radar. According to the different nature of radar jamming, it respectively put forward effective jamming mode, elaborated their principles and methods, gave the jamming effectiveness through simulation map, and illustrated the influence of relevant parameters on the jamming effectiveness.Secondly, the paper studied the radar target threat ordering. Aiming at the deficiency of air target threat ordering method to support combat aircraft considered, the paper put forward the threat ordering method based on overall combat effectiveness, established the index system of threat ordering, analysed the least bias fuzzy complementary judgment matrix method for calculating the index weights, introduced the improving rate matrix Q of combat capability, gave the threat degree of support combat target. The simulation result showed that, the threat ordering method was more accurately for evaluating the threat degree of support combat target, and more in line with the air defense combat practice.Thirdly, the paper discussed the jamming effectiveness evaluation. It listed the advantages and disadvantages of several commonly methods, presented the jamming effectiveness evaluation based on utility rule. By considering the working ability of jammed radar, it selected the evaluation index system, quoted the concept of utility function of decision theory, and took the plural form, max operator, calculated the jamming effectiveness. The evaluation method accurately reflected the decrease degree of working ability of jammed radar, which was as same as the satisfaction degree of jamming purpose.Lastly, the paper introduced the constitute and the main function of RJADS, the general steps and the main task of jamming assistant decision-making, discussed the elements of alternatives plan. Considering the impact of the battlefield situation on the commander’s decision in advance, the paper put forward the jamming resource allocation based on different decision principles, discussed the respective allocation model of optimistic principle, satisfactory principle and pessimistic principle. Finally, it simulated the resource allocation by genetic algorithm. The result showed the advantages and disadvantages of different alternative plans, which was the important reference for operational commander.