CAJ | 학술논문

为了提高三分向台站方位角计算的准确性，结合DRSN软件处理方法的思想，在原有采用固定频带滤波后进行偏振分析的基础上增加了信号检测频带，选择最佳结果作为偏振分析结果。测试结果表明：该方法提高了能量分布在较窄频带的震相和分布于较高频带的区域震相的偏振分析质量，有效改善了方位角估算的准确性；对于方位角残差不具备正态分布的台站，其结果没有改善。
위료제고삼분향태참방위각계산적준학성，결합DRSN연건처리방법적사상，재원유채용고정빈대려파후진행편진분석적기출상증가료신호검측빈대，선택최가결과작위편진분석결과。측시결과표명：해방법제고료능량분포재교착빈대적진상화분포우교고빈대적구역진상적편진분석질량，유효개선료방위각고산적준학성；대우방위각잔차불구비정태분포적태참，기결과몰유개선。
Polarization analysis is used on 3-Component stations data to estimate the azimuth and slowness at CTBT BeiJing NDC.In order to improve the quality of azimuth estimation ,in this work,polarization analysis was conducted in the detection filter band in addition to the original fixed band .The testing shows the method effec-tively enhanced the quality of polarization analysis for arrivals with energy only covering a narrow frequency and for regional arrivals located in a higher frequency band .The accuracy of the azimuths estimation was improved . The new approach was not effective for stations without normal distribution of azimuth residuals .