研究了去斜调频步进信号合成原理及其应用技术,分析了宽带去斜信号步进频合成原理, 着重研究了该技术在实际应用中可能遇到的问题,借鉴ISAR成像原理与算法给出了残余相位补偿和系统跟踪误差补偿的解决方案, 提出了系统参数设计约束和回波信噪比等系统设计要求, 梳理了去斜步进频合成处理流程。仿真分析表明, 提出的算法和流程正确有效, 解决了去斜调频步进信号合成从理论论证到实际应用的问题, 可用于宽带/超宽带信号产生与处理。

The theory and application techniques of the stretched chirp-step signal synthesizing are investigated, and the possible problems while applying this new technique to the radar system are studied thoroughly. The corresponding solutions to these problems are provided as well, including RVP compensation and system tracking error compensation. The design requirements of the system are also put forward, such as the design constraints of the system parameter and the echo SNR.On this basis, the processing procedure of stretched chirp-step signal synthesizing is presented. Simulation results demonstrate the efficiency and validity of the algorithm and the processing procedure.So the problems of how to apply the theory of this new technique are solved. This technique can also be used for the generating and processing of wideband/ultra-wideband signal.