本文選題：定標源 + 結(jié)構(gòu)設(shè)計�。� 參考：《吉林大學(xué)》2017年碩士論文

【摘要】：眾所周知,地球的海洋面積約占地表面積的百分之七十一,而陸地的面積僅為海洋面積的五分之二,可以說汪洋大海包圍著各個大陸,分隔著各個大陸�，F(xiàn)如今,世界交流日益頻繁,大海作為連接著世界各國文化與經(jīng)濟的紐帶,就顯得愈發(fā)的重要。也因此,掌握準確有效的海洋信息一直是各國學(xué)者爭相研究的熱點問題之一。文中涉及的全極化微波輻射計定標源裝置的研制任務(wù),是吉林大學(xué)機械學(xué)院受中國科學(xué)院空間科學(xué)與應(yīng)用中心(以下簡稱空間中心)委托而展開的。其研究目的是為了攻克某新型全極化微波輻射計的關(guān)鍵技術(shù)。這種新型的全極化微波輻射計用于海面風場的觀測,主要是觀測海洋風速和風向。在微波輻射計開始測量物體輻射能量之前,需要進行定標,定標精度的高低直接決定測量的精度,因此提高定標精度,完善定標源裝置結(jié)構(gòu)至關(guān)重要。本文旨在研究全極化微波輻射計定標源裝置及其結(jié)構(gòu),使其滿足某新型全極化微波輻射計的定標精度要求。本論文主要研究內(nèi)容包括:(1)查閱大量國內(nèi)外相關(guān)技術(shù)文獻,了解全極化微波輻射計及其定標技術(shù)的發(fā)展過程,表明本文研究的目的。(2)研究全極化微波輻射計的定標原理,并根據(jù)空間中心提供的技術(shù)指標要求,進行定標源裝置的結(jié)構(gòu)設(shè)計。首先進行了定標源裝置的結(jié)構(gòu)布局設(shè)計,然后對定標源主殼體、相位發(fā)生器、冷熱源、非標轉(zhuǎn)盤軸承等主要部件進行了詳細的結(jié)構(gòu)設(shè)計。(3)定標源裝置的有限元分析。應(yīng)用ANSYS Workbench、Hypermesh等有限元軟件,對整體裝置進行了分析,主要包括裝置在受重力狀態(tài)下的靜力分析和模態(tài)分析,裝置在工作狀態(tài)時的熱影響分析,以及裝置在公路運輸環(huán)境下的隨機振動分析。(4)對定標黑體進行了設(shè)計和研制,主要包括黑體涂覆所用新型吸波涂料的研制過程,包括配制過程以及性能測試過程,以及黑體的涂覆過程及裝配方法。(5)定標源裝置的制造裝配和調(diào)試。對裝置的裝配工藝過程進行了研究,根據(jù)空間中心所提的技術(shù)指標要求,研究了裝置的線柵和轉(zhuǎn)盤軸承的裝調(diào)方法,以滿足定標源裝置的功能和性能要求。本文對全極化微波輻射計定標源裝置進行了結(jié)構(gòu)設(shè)計和研制,主要包括裝置總體的結(jié)構(gòu)設(shè)計,以及主殼體、冷熱源、相位發(fā)生器等部件的設(shè)計,尤其創(chuàng)新設(shè)計了一套專用于定標源裝置的非標軸承;并研究了定標黑體涂覆所用吸波涂料的配制方法,推進吸波涂料的國產(chǎn)化進程;并對裝置進行了制造、裝配和調(diào)試。經(jīng)試驗和測試,結(jié)果表明所研制裝置滿足各項性能指標要求,為后續(xù)的全極化微波輻射計定標源裝置的研究提供了一定的理論參考。
[Abstract]:As we all know, the sea area of the earth covers about 71% of the surface area, while the land area is only 2/5 of the ocean area. Nowadays, the communication of the world is becoming more and more frequent, and the sea is becoming more and more important as the link between culture and economy. Therefore, mastering accurate and effective ocean information has always been one of the hot issues that scholars all over the world are scrambling to study. The research and development of the calibration device for the fully polarized microwave radiometer in this paper was commissioned by the Center for Space Science and applications of the Chinese Academy of Sciences (hereinafter referred to as the Space Center) at the College of Mechanics of Jilin University. The purpose of this study is to capture the key technology of a new type of fully polarized microwave radiometer. This new type of fully polarized microwave radiometer is used to observe the wind field of the sea surface, mainly to observe the wind speed and direction of the ocean. Before the microwave radiometer starts to measure the radiation energy of the object, it is necessary to calibrate. The precision of calibration directly determines the precision of measurement, so it is very important to improve the calibration accuracy and perfect the structure of calibration source device. The purpose of this paper is to study the calibration device and its structure of a fully polarized microwave radiometer, so that it can meet the calibration accuracy requirements of a new type of fully polarized microwave radiometer. The main contents of this thesis are as follows: (1) referring to a large number of relevant technical documents at home and abroad to understand the development process of full polarization microwave radiometer and its calibration technology, indicating that the purpose of this paper is to study the calibration principle of full polarization microwave radiometer. According to the technical requirements provided by the space center, the structural design of the calibration source device is carried out. Firstly, the structural layout of the calibration source device is designed, and then the finite element analysis of the calibration source main shell, phase generator, cold and heat source, non-standard turntable bearing and other main components is carried out in detail. By using ANSYS Workbench HyperMesh and other finite element software, the whole device is analyzed, including static analysis and modal analysis under the condition of gravity, thermal impact analysis of the device in the working state. And the random vibration analysis of the device in the environment of highway transportation. (4) the calibration blackbody is designed and developed, which mainly includes the development process of a new type of absorbing coating used in blackbody coating, including the process of preparation and the process of performance testing. And blackbody coating process and assembly method. The assembly process of the device is studied. According to the technical requirements proposed by the space center, the installation and adjustment methods of the line grille and rotary disc bearings of the device are studied to meet the function and performance requirements of the calibration source device. In this paper, the structural design and development of the calibration device for fully polarized microwave radiometer are carried out, including the overall structural design of the device, as well as the design of the main shell, heat and cold source, phase generator and other components. In particular, a set of non-standard bearings specially designed for calibration source equipment is designed, and the preparation method of absorbing coating for calibration blackbody coating is studied to promote the localization process of absorbing coating, and the device is manufactured, assembled and debugged. The experimental results show that the developed device meets the requirements of various performance indexes and provides a theoretical reference for the subsequent research on the calibration device of fully polarized microwave radiometer.
【學(xué)位授予單位】：吉林大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TH766

【相似文獻】

相關(guān)期刊論文 前4條

1 彭樹生,李興國;口面定標源天線溫度的相關(guān)成分分析[J];遙感技術(shù)與應(yīng)用;1997年02期

2 紀樹臣 ,楊榮邦;9375MHz太陽射電望遠鏡新定標源系統(tǒng)及其室內(nèi)控制裝置[J];云南天文臺臺刊;1982年01期

3 年豐;楊于杰;王偉;;基于CFD技術(shù)的微波定標源亮溫評定方法[J];遙感學(xué)報;2011年04期

4 紀樹臣 ,楊榮邦 ,陳國強;3521MHz太陽射電望遠鏡在云臺安裝調(diào)試報告Ⅲ(續(xù)前)——Ⅲ 定標源系統(tǒng)及其主要技術(shù)指標的測定[J];云南天文臺臺刊;1979年04期

相關(guān)會議論文 前5條

1 樸英淑;苗俊剛;白明;張輝;;微波輻射計定標源的優(yōu)化設(shè)計[A];2007年全國微波毫米波會議論文集（下冊）[C];2007年

2 翟宏;;微波輻射計定標源關(guān)鍵技術(shù)的探討[A];第十五屆全國遙感技術(shù)學(xué)術(shù)交流會論文摘要集[C];2005年

3 彭益;苗俊剛;張輝;肖慧;;定標源金屬罩體對定標精度的影響分析[A];第二屆微波遙感技術(shù)研討會摘要全集[C];2006年

4 婁錚;苗俊剛;;微波輻射計定標源發(fā)射率單站測量法的評估[A];2007年全國微波毫米波會議論文集（下冊）[C];2007年

5 汪哲思;楊于杰;程春悅;;微波亮溫度標準研究[A];2011年全國微波毫米波會議論文集（下冊）[C];2011年

相關(guān)博士學(xué)位論文 前1條

1 李彬;一種新型全極化微波輻射計定標源研制及定標方法研究[D];中國科學(xué)院國家空間科學(xué)中心;2017年

相關(guān)碩士學(xué)位論文 前2條

1 王欣揚;全極化微波輻射計定標源裝置的研制[D];吉林大學(xué);2017年

2 林亞帆;全極化微波輻射計定標源裝置伺服系統(tǒng)設(shè)計與研究[D];吉林大學(xué);2017年

，

本文編號：2040329