The Theory, Algorithm And Application Research Of System Simulation Of Radars

Design, development and commissioning of modern radar systems have traditionally been expensive and time consuming tasks, radar system simulation technology is used widely to delivered significant saving in the research, development and verification of radar systems. Radar system simulation features economy, flexibility, practicality, etc., it becomes key technique of the research of radar systems and ECM (Electronic Counter measures) systems. Now, GRS(General Radar Simulator), RTS(Radar Target Simulator) and ECM simulator construct EW(Electronic Warfare) closed-loop simulation system. Because of this capability of simulating interactivity among them, they could evaluate and verify each other, accordingly promote the development of EW.Based on the development of TDRSS (Three-Dimensional Radar Simulation System) and the airborne high-resolution PD (Pulse-Doppler) signal simulator, this dissertation discusses mainly the theory, algorithm and application of the radar system simulation technology.TLe main content and creative work in this dissertation are as follow: Based on the analysis of the principles of frequency-phase scanning 3-D ( Three-Dimensional ) radar and the scattering mechanism of 3-D radar, the research results include:1) A target IF signals model of frequency-phase scanning 3-D radar is brought forward in this dissertation. By this model, the target IF return of sum, difference and SLB/SLC antenna channel of the trilobe of frequency-phase scanning 3-D radar could be represented in one uniform expression accurately.2) An effective solution of simulating clutter IF return of 3-D radar is described in this dissertation. By using the target IF signals model above to multiply the general pulse clutter data of each range gate and add them together, the clutter IF return could be simulated easily. The simulation method of clutter with stagger-PRF (Pulse Repetition Frequency) nature is also discussed here. At the end, the clutter simulation of complex modern radar is discussed completely in this dissertation.3) A general system model of 3-D radar is proposed in this dissertation. By using the coherent IF/video signal simulation and multi-sampling rate processing, this model could represent the nonlinear feature of the receiver and the ECCM process of 3-D radar accurately and effectively. It is necessary for evaluating the interference effects of the wide-band jamming signals on 3-D radar. As parts of an advantage signal processing model, the plots correlation of trilobe of 3-D radar and mono-pulse angle measurements are discussed thoroughly. The data processing model of 3-D radar gives some new idea too. Some fast algorithms also have been adopted to improve the simulation speed when enormous data is generated at IF sampling.4) To study the detailed effects of airborne ECM against air-defense 3-D radar,...