大动态大带宽数字接收机设计实现

摘要

The high dynamic digital receiver is the important component of Surface Movement Radar (SMR) .The selection of high dynamic ,wideband radar system operating parameter are discussed .Simulation design of digital filter with MATLB software which uses 16‐bit analog convertor and large capacity FPGA to resolve the problem of high dynamic , wide bandwidth range and digital down conversion . And the data transmission with high speed fiber gives the design analysis and measurement result that the SNR meets the requirement of dynamic range for the system .The module has higher performance than analog receiver ,which provides the resolving scheme of high performance digital receiver for modern radar ,and it has wide future ap‐plication .%大动态数字接收机是机场场面监视雷达的重要组成部分。论证了大动态、大带宽系统参数的选取，数字滤波器的MATLAB仿真设计，采用16位模数转换器，大容量FPGA构建数字接收机平台，解决了大动态、大带宽采样及其数字下变频处理问题，并高速光纤传输数据，给出设计分析及测试结果，该结果表明，信噪比满足系统动态范围的要求。该电路相对于模拟接收机有较高的性能，为现代雷达提供了一种高性能的数字接收机的解决方案，具有广泛的应用前景。