KEYWORDS: Radar, Computer simulations, Control systems, Data storage, Detection and tracking algorithms, Time metrology, Target recognition, Electromagnetism, Switching, Signal processing
The radar hardware in the loop simulation system can provide realistic target callback and complex information features for the radar in the infield. In order to evaluate the target sorting and recognition ability of the radar, the simulation system needs to generate high-density multi system complex modulation pulse flow signals. At present, the traditional radiation target timing control technology and limited feed channel can’t realistically simulate microsecond multi batch pulse flow and complex interference battlefield environment. Therefore, this paper proposes a dynamic sorting algorithm for complex high-density target radiation signals, adopts the pre storage technology of exchanging storage space for response time, and designs a target radiation timing control architecture, which solves the problem that the limited feed channel can’t simulate high-density multi batch pulse flow targets, and realizes the simulation of realistic battlefield environment in electromagnetic countermeasure environment.
In order to realize multi-devices co-simulation in a single radio frequency simulation system, it is necessary to provide echo signal for the tested device outside the center of turntable. Due to the multi-vector synthesis of antenna array, the distribution of the synthesized electromagnetic field outside the center of turntable is not uniform, which affects the performance of the tested devices. Based on the multivariate vector synthesis theory, a mathematical model of the triplet antenna is established to analyze the distribution characteristics of the combined electromagnetic field outside the center of turntable, and the correctness of the mathematical model is verified with measured data. By using optimization algorithm of triplet antenna, the uniform distribution of electromagnetic field outside the center of turntable is obtained, which verifies the possibility of multi-devices simulation.
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