【摘要】：利用吉林省連續(xù)運(yùn)行參考站網(wǎng)絡(luò)(JLCORS)近3年的觀測(cè)資料,使用GAMIT/GLOBK軟件進(jìn)行后處理,解算時(shí)用吉林省周邊IGS及陸態(tài)網(wǎng)絡(luò)站點(diǎn)作為控制點(diǎn),獲得41個(gè)站單日松弛解的坐標(biāo)時(shí)間序列。用最大似然法擬合經(jīng)典的噪聲模型,根據(jù)噪聲模型是否能夠取得似然函數(shù)的最大值,獲得不同噪聲模型及其組合的參數(shù)估計(jì)。結(jié)果表明,JLCORS全部參考站坐標(biāo)時(shí)間序列噪聲含有冪律噪聲及白噪聲,可用二者的組合噪聲模型來描述,不含帶通濾波噪聲及各階高斯-馬爾科夫噪聲。冪律噪聲模型部分的譜指數(shù)集中分布在-2附近,表明冪律噪聲的特例隨機(jī)游走噪聲占有主導(dǎo)地位。
[Abstract]:Using the observation data of Jilin Province continuous operation reference station network (JLCORS) for nearly 3 years, using the GAMIT/GLOBK software to carry on post processing, the solution uses the IGS and the land state network station around Jilin Province as the control point. The coordinate time series of 41 stations single day relaxation solution is obtained. The classical noise model is fitted with the maximum likelihood method, and the parameter estimates of different noise models and their combinations are obtained according to whether the noise model can obtain the maximum likelihood function. The results show that all JLCORS reference station coordinate time series noises contain power law noise and white noise, which can be described by their combined noise model, without band-pass filtering noise and Gao Si Markov noise of every order. The spectral exponent of the power law noise model is distributed in the vicinity of -2, which indicates that the random walk noise of the power law noise is dominant.
【作者單位】： 吉林大學(xué)地球探測(cè)科學(xué)與技術(shù)學(xué)院;吉林省地震局;北京麥格天寶科技股份有限公司;
【基金】：地震科技星火計(jì)劃(XH14016Y)
【分類號(hào)】：P228.4
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本文編號(hào)：2335097