本文選題：地球重力場模型 + SGG��； 參考：《解放軍信息工程大學(xué)》2013年碩士論文

【摘要】：本文主要研究了GOCE衛(wèi)星SGG數(shù)據(jù)的預(yù)處理及恢復(fù)地球重力場模型的理論與方法，利用61天的SGG數(shù)據(jù)研制了210階重力場模型Wiener_200deg_DD2_Vxxyy和220階重力場模型GOCE_EGM2008_Vxxyyzz地球重力場模型。作者在文中所做工作和創(chuàng)新點有： （1）研究了潮汐效應(yīng)對GOCE衛(wèi)星梯度數(shù)據(jù)的影響，給出了潮汐改正沿軌SGG數(shù)據(jù)的計算公式，基于JPL提供的精密星歷、CSR4.0海潮模型和IERS提供的極移數(shù)據(jù)分別計算了GOCE衛(wèi)星61天的天文潮、固體潮、海潮和極潮改正，并分析了潮汐改正的頻譜特性。 （2）給出了GOCE衛(wèi)星姿態(tài)的計算公式，并計算了GOCE衛(wèi)星沿軌姿態(tài)數(shù)據(jù)。研究了GOCE衛(wèi)星粗差探測的方法和標(biāo)定模型，并對GOCE衛(wèi)星實測數(shù)據(jù)進行了粗差探測和系統(tǒng)誤差的標(biāo)定。 （3）對GOCE衛(wèi)星標(biāo)定后的SGG數(shù)據(jù)進行了誤差分析，并計算了其噪聲功率譜密度，根據(jù)噪聲功率譜密度分析了GOCE衛(wèi)星SGG數(shù)據(jù)恢復(fù)地球重力場的能力。 （4）給出了GOCE衛(wèi)星SGG數(shù)據(jù)的歸算和格網(wǎng)化方法，研究了PG問題對于解算模型的影響。 （5）提出了基于低階先驗?zāi)Ｐ偷牡鶺iener濾波方法，在研究基于Wiener濾波的調(diào)和分析方法基礎(chǔ)上，比較了不同階次先驗重力場模型以及組合分量對恢復(fù)重力場模型的影響。最后利用該方法基于61天的GOCE衛(wèi)星SGG數(shù)據(jù)組合分量恢復(fù)了210階重力場模型Wiener_200deg_DD2_Vxxyy，，該模型在90階后精度高于ITG2010。 （6）研究了基于FIR帶通濾波器的頻域融合方法，提出了一種基于FIR帶通濾波器恢復(fù)地球重力場模型的最優(yōu)方法，并基于61天的GOCE衛(wèi)星SGG數(shù)據(jù)組合分量恢復(fù)了220階重力場模型GOCE_EGM2008_Vxxyyzz，其精度高于go_cons_gcf_2_spw_r1。
[Abstract]:In this paper, the preprocessing of SGG data from GOCE satellite and the theory and method of restoring the earth gravity field model are studied. Based on the 61 day SGG data, the 210th order gravity field model Wiener_200deg_DD2_Vxxyy and the 220-order gravity field model GOCE_EGM2008_Vxxyyzz earth gravity field model are developed. The author's work and innovations in this paper are as follows: 1) the influence of tidal effect on the gradient data of GOCE satellite is studied, and the formula for calculating the SGG data of tidal correction along the orbit is given. Based on the precise ephemeris CSR 4.0 tidal model provided by JPL and the polar shift data provided by IERS, the astronomical tide of 61 days of GOCE satellite is calculated, respectively. The correction of solid tide, sea tide and polar tide is analyzed, and the spectral characteristics of tide correction are analyzed. A formula for calculating the attitude of GOCE satellite is given, and the attitude data along the orbit of GOCE satellite are calculated. The gross error detection method and calibration model of GOCE satellite are studied, and the gross error detection and system error calibration of GOCE satellite measured data are carried out. The error analysis of SGG data after calibration of GOCE satellite is carried out, and the noise power spectral density is calculated. According to the noise power spectrum density, the ability of GOCE satellite SGG data to recover the earth gravity field is analyzed. In this paper, the method of GOCE satellite SGG data reduction and grid is given, and the influence of PG problem on the solution model is studied. (5) an iterative Wiener filtering method based on low order prior model is proposed. Based on the harmonic analysis method based on Wiener filter, the effects of different order prior gravity field models and combined components on restoring gravity field model are compared. Finally, the 210-order gravity field model Wiener _ s _ 200degD _ D _ 2V _ Xxyyis restored based on the combined component of 61 days GOCE satellite SGG data. The accuracy of the model is higher than that of ITG 2010 after 90 days. In this paper, the frequency domain fusion method based on FIR bandpass filter is studied, and an optimal method based on FIR band-pass filter to restore the earth gravity field model is proposed. Based on the 61 days GOCE satellite SGG data combination component, the 220-order gravity field model GOCES _ EGM2008 _ Vxxyyzzs is restored, and its precision is higher than that of the GOCE _ GCF _ S _ 2SP _ W _ S _ 1.
【學(xué)位授予單位】：解放軍信息工程大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：P223.0

【參考文獻】

相關(guān)期刊論文 前1條

1 于錦海;萬曉云;;利用引力梯度不變量解算的GOCE引力場模型[J];中國科學(xué):地球科學(xué);2012年09期

本文編號：1918142