基于S变换的浮标式高频地波雷达相位补偿算法  

Phase Compensation Algorithm Based on S-Transform in Buoy-based HFSWR

作　　者：邹磊[1] 吴雄斌[1] 徐兴安 王立[1] 

机构地区：[1]武汉大学电子信息学院,武汉430072 [2]山东航天电子技术研究所,烟台264670

出　　处：《科学技术与工程》2015年第34期69-73,共5页Science Technology and Engineering

基　　金：国家高技术发展研究计划(2012AA091702)资助

摘　　要：针对浮标式高频地波雷达系统,分析了雷达平台晃动对回波信号相位的影响,并且提出一种基于S变换的相位补偿方法。该方法利用信号窄带分量中能量最大者作为相位补偿的标校信号,采用S变换的时频分析方法对雷达信号的瞬时频率以及相位进行估计,实现对回波信号相位补偿。仿真结果显示一阶海洋回波谱得到了很好的锐化,与相位污染前的多普勒频谱相近,从而验证了方法的有效性。For buoy-based high-frequency surface wave radar system, the influence of buoy platform movement to the radar echo signal are analyzed, and a phase compensation algorithm based on S-transform is presented to eliminate the influence on echo signal phase caused by buoy platform movement. The method uses a narrowband signal component with greatest energy as a phase compensation calibration signal, and then estimates the instantaneous frequency and phase of radar echo signal with S-transform, realizing the phase compensation of echo signal. The results show that the first-order sea echo spectrum are well sharpened and is similar to the echo Doppler spectrum of original signal which verifying the effectiveness of the method.

关 键 词：浮标式高频地波雷达 相位补偿 S变换 

分 类 号：TN958.93[电子电信—信号与信息处理]