CAJ | 학술논문

受制造成本和工艺的限制，GPS 授时地震仪中的守时晶振不可避免地会有频率误差，继而在数据采集过程中，随着采集时间的增加，各台站之间会出现采集不同步现象。介绍了Akima分段多项式插值重采样方法及其在GPS授时地震仪时间校正中的应用。通过对理论数据与实际数据的Akima插值重采样试验表明，Akima插值重采样方法可应用于GPS授时地震仪走时误差校正，是一种简便、高效、保形性好的插值重采样方法。
수제조성본화공예적한제，GPS 수시지진의중적수시정진불가피면지회유빈솔오차，계이재수거채집과정중，수착채집시간적증가，각태참지간회출현채집불동보현상。개소료Akima분단다항식삽치중채양방법급기재GPS수시지진의시간교정중적응용。통과대이론수거여실제수거적Akima삽치중채양시험표명，Akima삽치중채양방법가응용우GPS수시지진의주시오차교정，시일충간편、고효、보형성호적삽치중채양방법。
Because of constraints of manufacturing costs and process, timing crystal in seismograph with GPS clock has inevitably frequency error. So, in the process of data acquisition, with the increase in acquisition time, non-synchronous phenomenon occurs between acquisition stations. The paper describes the Akima piecewise polynomial interpolation resampling method and its application in time correction of seismograph GPS clock. Akima interpolation by theoretical data and actual data resampling test showed that Akima interpolation resampling method can be applied to travel time error correction of seismograph with GPS time, is a simple, efficient, good shape retention interpolation resampling method.