Analysis Of Interception Probability And Direction-finding Performance In Millimeter-wave Warning System

As the number of millimeter-wave equipment is increasing,and the electromagnetic environmentof the modern battlefield become more complex and changeable,millimeter-wave radar warning is facing increasing pressure with higher requirements of the ability to intercept and direction-finding for warning systems.It is of great significance for improving the signal interception and direction-finding ability of the millimeter-wave warning system.In this paper, based on a platform of the millimeter-wave warning system, detailed research and simulation analysis of the intercept probability and direction-finding performance, the main research content is divided into two parts shown as follows.First of all, through the window function theory, a general sense of the intercept probability model, and according to the different system of warning system are discussed respectively and the simulation analysis, the model is verified by the simulation results can be applied to electronic against both the conclusion of the work pattern of arbitrary dimension, for millimeter-wave warning system ability to intercept of the design reference is given. In addition, the pulse missing probability is analyzed separately.For complex battlefield environment under the condition of high pulse current density and complex signal form as one of the main characteristics of the signal flow, on the one hand, the pulse missing probalility of the millimeter-wave warning system is associated with pulse current density in the environment, on the other hand, is directly related to the warning front end design level. In view of the two aspects, the range of the average received signal pulse width and receive recovery time of front is given in this paper through the analysis of simulation.Secondly, based on the ratio of the principle of direction-finding, the error factors that affect the precision of direction-finding warning system has carried on the comprehensive analysis and simulation is derived. Combining with the beam width, installation Angle, amplitude consistency of Environment simulation of the system and injection of different signal to noise ratio, shows the error of the system simulation results, and finally test results are in good agreement, proved that the accuracy and effectiveness of the theoretical simulation. For warning system engineering practice, advances some measures for improving the design of direction-finding performance.The effection of the direction error of the system with different detection amplifier form is discussed separately, A conclusion of logarithmic amplifier is the most appropriate form is given.Based on the intercept probability and direction-finding performance research and simulation of millimeter-wave warning system, induces the millimeter- wave warning system overall design, the need to consider the design of each subsystem, and provides a reference on how to design and constraint condition, has the very good engineering practice guiding significance in this paper.