本文選題：嫦娥一號　切入點(diǎn)：亮溫　出處：《華中科技大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：月壤介電常數(shù)是影響月球表面微波輻射亮溫的一個(gè)主要因素,要想建立準(zhǔn)確的月表微波輻射亮溫模型,首先需要確定一個(gè)準(zhǔn)確的月壤介電常數(shù)模型。本文基于嫦娥多通道(19.35GHz、37GHz)微波輻射亮溫?cái)?shù)據(jù)反演了月壤介電常數(shù),并對反演結(jié)果進(jìn)行了分析。本文首先介紹了月表多層微波亮溫模型和模型的主要參數(shù),并重點(diǎn)分析了月壤密度、物理溫度剖面和月壤介電常數(shù)對亮溫的影響。分析結(jié)果表明,鐵鈦含量對亮溫的影響與介電常數(shù)模型中鐵鈦含量的權(quán)重有關(guān)。然后利用嫦娥一號實(shí)測亮溫?cái)?shù)據(jù),計(jì)算了全月白天的時(shí)空歸一化亮溫差?,并分析了白天?與鐵鈦含量的相關(guān)性,同時(shí)也分析了赤道地區(qū)正午時(shí)刻實(shí)測亮溫和鐵鈦含量的相關(guān)性。研究結(jié)果表明,鐵含量和鈦含量對亮溫的影響程度不一致,因此二者在月壤介電常數(shù)模型中的權(quán)重不同,不能簡單的將它們相加,而應(yīng)該分別討論鐵含量和鈦含量對亮溫的影響。利用嫦娥一號微波亮溫?cái)?shù)據(jù),反演月壤介電常數(shù)模型時(shí),首先對比實(shí)測亮溫與利用現(xiàn)有的月壤介電常數(shù)模型得到的模擬亮溫隨鐵鈦含量變化的趨勢,確定了帶參數(shù)的月壤介電常數(shù)模型的形式。然后根據(jù)嫦娥一號19.35GHz和37GHz的實(shí)測?與鐵鈦含量的相關(guān)性,結(jié)合月表多層微波輻射亮溫模型和多變量約束最優(yōu)化方法,反演了月壤介電常數(shù)模型,并對反演結(jié)果進(jìn)行了分析和驗(yàn)證。結(jié)果表明,利用反演的月壤介電常數(shù)模型得到的模擬?與實(shí)測?隨鐵鈦含量的變化趨勢基本一致,同時(shí)利用反演的介電常數(shù)模型計(jì)算的赤道地區(qū)正午時(shí)刻的模擬亮溫與實(shí)測亮溫隨鐵鈦含量的變化趨勢也基本一致,且模擬亮溫和實(shí)測亮溫的幅值基本相當(dāng),這就從亮溫相對值和絕對值的角度驗(yàn)證了反演的月壤介電常數(shù)的正確性。嫦娥一號校準(zhǔn)數(shù)據(jù)反演結(jié)果與嫦娥一號數(shù)據(jù)反演結(jié)果基本一致,這也進(jìn)一步檢驗(yàn)了反演結(jié)果的穩(wěn)定性。同時(shí)通過與月壤樣本實(shí)測的介電常數(shù)的對比,也說明了本文反演結(jié)果的合理性。
[Abstract]:The permittivity of lunar soil is one of the main factors that influence the brightness temperature of microwave radiation on the surface of the moon. In order to establish an accurate model of the bright temperature of microwave radiation on the surface of the moon, First of all, it is necessary to determine an accurate model of the permittivity of lunar soil. In this paper, the dielectric constant of lunar soil is inversed based on the light temperature data of Chang'e multi-channel (19.35GHz ~ 37GHz) microwave radiation. In this paper, the main parameters of the multi-layer microwave bright temperature model and model are introduced, and the effects of lunar soil density, physical temperature profile and permittivity of lunar soil on the brightness temperature are analyzed. The influence of iron-titanium content on the brightness temperature is related to the weight of iron-titanium content in the dielectric constant model. , and analyzed the day? The correlation between iron content and titanium content is also analyzed. The results show that the effect of iron content and titanium content on the brightness temperature is not consistent. Therefore, the weight of them in the dielectric constant model of lunar soil is different, so they can not be simply added together, but the effects of iron content and titanium content on the light temperature should be discussed separately. When using the microwave light temperature data of Chang 'e-1, the dielectric constant model of lunar soil can be retrieved. By comparing the measured light temperature with the simulated light temperature with the change trend of iron and titanium content, the model with parameters is determined, and then the measured results of Chang'e 1 at 19.35 GHz and 37 GHz are given. The correlation with iron-titanium content, combined with the bright temperature model of monthly surface microwave radiation and multi-variable constrained optimization method, is used to invert the permittivity model of lunar soil, and the inversion results are analyzed and verified. By using the inverse model of permittivity of lunar soil? And the test? The trend of variation with iron-titanium content is basically the same, and the variation trend of simulated brightness temperature at noon time in equatorial region and that of measured bright temperature with iron and titanium content is basically the same, which is calculated by using the inverse dielectric constant model. And the amplitude of simulated brightness temperature is similar to that of measured light temperature. This verifies the correctness of the inversion of the permittivity of lunar soil from the point of view of the relative and absolute values of bright temperature. The inversion results of the calibration data of Chang 'e-1 are basically consistent with the inversion results of the Chang 'e-1 data. This further tests the stability of the inversion results and proves the rationality of the inversion results by comparing them with the measured permittivity of lunar soil samples.
【學(xué)位授予單位】：華中科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：P184.5

【參考文獻(xiàn)】

相關(guān)期刊論文 前8條

1 ;The modeling analysis of microwave emission from stratified media of non-uniform lunar cratered terrain surface for Chinese Chang-E1 observation[J];Chinese Science Bulletin;2011年11期

2 熊盛青;;月球探測與研究進(jìn)展[J];國土資源遙感;2009年04期

3 王振占;李蕓;張曉輝;姜景山;胥傳東;張德海;郭偉;;“嫦娥一號”衛(wèi)星微波探測儀數(shù)據(jù)處理模型和月表微波亮溫反演方法[J];中國科學(xué)(D輯:地球科學(xué));2009年08期

4 李蕓;王振占;姜景山;;月表溫度剖面對于“嫦娥一號”衛(wèi)星微波探測儀探測亮溫影響的模擬研究[J];中國科學(xué)(D輯:地球科學(xué));2009年08期

5 王振占;李蕓;姜景山;李滌徽;;用“嫦娥一號”衛(wèi)星微波探測儀亮溫反演月壤厚度和~3He資源量評估的方法及初步結(jié)果分析[J];中國科學(xué)(D輯:地球科學(xué));2009年08期

6 法文哲;金亞秋;;光學(xué)觀測與微波輻射模擬對月壤厚度的反演[J];電波科學(xué)學(xué)報(bào);2006年03期

7 法文哲;金亞秋;;月球表面多通道輻射亮度溫度的模擬與月壤厚度的反演[J];自然科學(xué)進(jìn)展;2006年01期

8 盧波;月球探測的意義及發(fā)展態(tài)勢[J];國際太空;1998年04期

相關(guān)博士學(xué)位論文 前4條

1 連懿;基于嫦娥探月微波數(shù)據(jù)的月球淺表層成分反演與結(jié)構(gòu)分析研究[D];吉林大學(xué);2014年

2 宮曉蕙;“嫦娥一號”衛(wèi)星微波探測對月表參數(shù)反演的理論與應(yīng)用[D];復(fù)旦大學(xué);2013年

3 孟治國;月壤參數(shù)的輻射傳輸模擬與查找反演技術(shù)研究[D];吉林大學(xué);2008年

4 法文哲;月球微波遙感的理論建模與參數(shù)反演[D];復(fù)旦大學(xué);2008年

相關(guān)碩士學(xué)位論文 前2條

1 趙耀;嫦娥衛(wèi)星微波探測儀數(shù)據(jù)對比分析及程序設(shè)計(jì)[D];華中科技大學(xué);2013年

2 何燕春;不同尺度粗糙度對月壤微波輻射亮溫影響研究[D];華中科技大學(xué);2013年

，

本文編號：1595371