| Small wideband radar has many characteristics as small, light, portability, stronganti-interference and so on. With the development of UAV and related lightweightplatform technologies, small wideband radar will have a broader range of application.Wideband radar miniaturization and its signal processing technology has become aresearch hotspot in the world today.Based on the designing of"X-band wideband small radar transceiver system", inthis paper the author presented a holistic design approach and system block diagram ofa wideband small radar transceiver system with bandwidth of 1GHz, working in thex-band. Each module of the system has been undertaken analyses and tests. The authorcompleted the system commissioning and the system performance tests. Based on theanalysis of multiple wideband radar signal generating schemes, the dissertationdemonstrated a design proposal of wideband radar signal generator module with DDScombining frequency mixing and frequency doubling technology. The authorcompleted the design. Combined with the many tests data of this radar system, theauthor launched measured data and simulation data researches on many widebandradar signal processing key technologies, including pulse compression technology,moving target indication technology, moving target detection technology. As to thewideband radar signal echo target's range migration's problem, the authordemonstrates a range migration's correction method which steps by the Keystonetransform, and solved the range migration's problem in long term coherent integrationof radar weak target detection through the verification of the simulation and measureddata. |
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