A Study Of Short Range Land Surveillance-radar On LFMCW

This thesis focus on the melee role in short range battlefield surveillance radar in military struggle irreplaceable and in the current military operations have become increasingly prominent in the tactical significance, the combination of linear frequency modulated continuous wave(LFMCW) system and in-depth research system. The paper analyzed in detail the feasibility of application of LFMCW system in the short range battlefield surveillance radar, conducted in-depth study of the target ranging and velocity measurement, moving target detection, multi target detection, finally the system design of the experimental sample and every function module is discussed.The purpose of this thesis is based on the characteristics of LFMCW system, combined with the target detection algorithm and solve the multi target detection problem in frequency domain pairing algorithm, through theoretical derivation and simulation verification, so that the short range battlefield surveillance radar this system applicable to the current military struggle front, can satisfy the need of front-line Combat Outpost vigilance, one-man reconnaissance, sea border defense guard, army, and with continuous work, simple operation, portability features, but also to meet the equipment of miniaturization, lightweight, low cost, high performance, so as to facilitate a lot of equipment the troops at the front.Relatively speaking, LFMCW radar anti interception performance is good, high range resolution, strong anti-interference ability, low transmitter peak power, no blind area, and compact structure is simple, short-range performance is excellent, just can be used in proximity warning. By analyzing the study and simulation experiment, prove its correctness and feasibility.The main research work is:1.On short range battlefield surveillance radar background and significance of this equipment are expounded, the research and development situation and technical characteristics of the system are discussed, the trend of its development are also presented.2.Analyzed the principle of application of scene and target detection for short range battlefield surveillance radar, its working principle were studied, finally, through the simulation of target detection algorithm, the correctness and feasibility of the signal processing method is validated, provides the reference data for the full analysis after.3.Studies of LFMCW radar signal processing process, the frequency domain pairing processing method were studied in detail and its feasibility is validated by simulation in multi object detection.4.Describes the function and the index parameter of experiment system prototype, select the appropriate signal processing scheme, and the algorithm is discussed and analyzed.Finally, this thesis systematically summarizes the whole work, and clearly the further study problems of future.