Time and costs are of great concern for designing a simulator. It's not always wise to introduce an extra simulator to debug and test a signal processing system. In this paper, considering the characteristics of the signal processor, we propose a novel method of incorporating radar echo simulation capability into the signal processor with no extra hardware resource needed. Detailed mathematical modelling of the exact radar echo is first presented. Then the design of echo simulation function is elaborated. Taking into account the very short development time, the experimental results are very satisfying.
A general-purpose multi-channel radar echo simulator is researched and proposed in this paper to satisfy the various needs of the radar signal processor testing. The specificity of target echo model is the main problem to achieve the generalization for a simulator. The simulator will give priority to the issue of the generalization because the generalization is always the most attractive feature for any device. Therefore, it will lose some other performance. For example, the accuracy of the target distance will be reduced since we consider the target will not move in a coherent integration frame to reduce the computation and complexity of the echo modeling. At last, implementation of a specific simulator based on FPGA and DSP is introduced, including hardware design and software processing methods.
A new type circular array radar is introduced in this paper. First, the working theory of this radar is introduced, as well as the signal processing method. The characteristics and advancements of this type of radar are detailed analyzed, and the key technology of the circular array radar is proposed. Second, two applications of circular array radar are introduced; they are VHF circular array long-range surveillance radar and L band mini circular array radar. Finally, the potential prospect of this circular array radar is proposed.
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