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基于雷达系统的频谱探测研究

The Research of Spectrum Detection in Radar System
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摘要 TD-LTE系统与雷达系统在传统方式下难以实现系统间电磁兼容,而将认知无线电思想引入到TD-LTE系统,以动态接入的方式与雷达系统共享频谱,为两者的兼容共存提供了可能性。基于认知TD-LTE系统的典型工作场景,首先分析了保护授权雷达系统的要求;接着选取S波段典型雷达参数,计算了雷达主瓣带宽内的分析时间长度和脉冲数,并结合TD-LTE帧结构特点,分析了上行连续时隙内所能检测到不同雷达参数时的脉冲数,给出了能完成雷达有效检测的时隙配比方案;最后通过仿真不同雷达的检测性能,证明了合理配置的TD-LTE帧结构可利用上行连续时隙有效地检测到雷达信号。 Conventionally,TD-LTE system and the radar system are difficult to achieve electromagnetic compatibility.However,it provides the possibility of coexistence of both systems to introduce the cognitive radio into TD-LTE system,and shanes the spectrum with the radar system in a dynamic access manner.Based on the typical working scenario of cognitive TD-LTE system,the protection requirements of the authorized radar system is analysed firstly.Then by adopting the S-band radar parameters,the length of analysis time for the radar bandwidth of the main lobe and the number of pulses are calculated.Combined with the features of TD-LTE frame structure,it is analyzed that how many pulses can be detected with different types of radar parameters by the uplink contiguous time slots,and the related effective slot configuration are given.Finally,from the simulation results of detecting diffrent types of radar,it is proved that the radar signal can be effectively detected by the TD-LTE uplink consecutive time slots for the sake of rational configured frame structure.
作者 方箭 王坦 黄标
机构地区 国家无线电监测中心
出处 《中国电子科学研究院学报》 2013年第3期271-274,共4页 Journal of China Academy of Electronics and Information Technology
基金 国家重大专项基金资助项目(2012ZX03003004 2012ZX03006003)
关键词 认知无线电 TD-LTE 雷达 时隙配比 检测概率 Cognitive radio TD-LTE radar timeslot ratio detection probability
分类号 TN92 [电子电信—通信与信息系统]
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参考文献10

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二级参考文献26

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中国电子科学研究院学报
2013年 第3期

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