發(fā)布時(shí)間：2019-06-22 14:46

【摘要】：自微波統(tǒng)一測(cè)控系統(tǒng)問(wèn)世以來(lái),其主要應(yīng)用于衛(wèi)星、飛船的測(cè)控。應(yīng)答機(jī)作為統(tǒng)一測(cè)控系統(tǒng)的關(guān)鍵單機(jī),最關(guān)鍵的功能就在于獲取以及解調(diào)地面站輸出的遙控信號(hào),對(duì)測(cè)距以及測(cè)速信號(hào)進(jìn)行轉(zhuǎn)發(fā),完成測(cè)軌任務(wù)、將飛行器上的各類遙測(cè)數(shù)據(jù)發(fā)送至地面站,以完成遙測(cè)功能、產(chǎn)生一個(gè)穩(wěn)定的連續(xù)波信號(hào),作為地面站引導(dǎo)信標(biāo)。相位調(diào)制器是應(yīng)答機(jī)發(fā)射通道中的一個(gè)重要電路,其性能的好壞直接影響到應(yīng)答機(jī)轉(zhuǎn)發(fā)與遙測(cè)信道的指標(biāo)。本文結(jié)合工作中型號(hào)任務(wù)需求,對(duì)調(diào)相器電路進(jìn)行了廣泛的調(diào)研工作,通過(guò)對(duì)電路以及電路中所用元器件的廣泛調(diào)研,對(duì)調(diào)相器進(jìn)行方案設(shè)計(jì)、電路仿真,采用反射式調(diào)相器進(jìn)行相位調(diào)制,并且加入熱敏電阻網(wǎng)絡(luò)對(duì)調(diào)相器進(jìn)行溫度補(bǔ)償,使之在較寬的溫度范圍下調(diào)制度變化較小,隨后對(duì)電路板進(jìn)行加工生產(chǎn),并進(jìn)行了一系列的試驗(yàn)驗(yàn)證工作。研制出了一種可適應(yīng)較寬的溫度范圍(-35~+70)、便于調(diào)試測(cè)試、同時(shí)具有高可靠性的調(diào)相器電路。本文首先對(duì)衛(wèi)星應(yīng)答機(jī)中調(diào)相器技術(shù)發(fā)展和國(guó)內(nèi)外應(yīng)用現(xiàn)狀進(jìn)行了回顧,簡(jiǎn)述相位調(diào)制器的工作原理和外圍電路組成。然后詳細(xì)介紹了基于反射式的相位調(diào)制器設(shè)計(jì)方案,給出了ADS電路包絡(luò)仿真分析的結(jié)果。最后調(diào)相器電路的研制過(guò)程和各階段測(cè)試結(jié)果進(jìn)行了詳細(xì)的闡述。經(jīng)過(guò)對(duì)測(cè)試結(jié)果的分析,驗(yàn)證了其作為衛(wèi)星應(yīng)答機(jī)電路的通用性和高可靠性。
[Abstract]:Since the advent of microwave unified measurement and control system, it has been mainly used in satellite and spacecraft measurement and control. As the key single machine of the unified measurement and control system, the most key function of the transponder is to obtain and Demodulate the remote control signal outputted by the ground station, forward the ranging and velocity signals, complete the task of orbit measurement, and send all kinds of telemetry data on the aircraft to the ground station in order to complete the telemetry function and produce a stable continuous wave signal, which can be used as the guiding beacon of the ground station. Phase modulator is an important circuit in transponder transmission channel, and its performance directly affects the index of transponder forwarding and telemetry channel. In this paper, according to the requirements of the model task, the phase modulator circuit is widely investigated. Through the extensive investigation of the circuit and the components used in the circuit, the scheme design, circuit simulation, phase modulation using reflective phase modulator, and adding thermistor network to compensate the temperature of the phase modulator are carried out, so that the system changes little in a wide temperature range. Then the circuit board is processed and produced, and a series of test and verification work are carried out. A phase modulator circuit which can adapt to a wide temperature range (- 35 ~ 70) is developed, which is convenient for debugging and testing, and has high reliability. In this paper, the development of phase modulator technology in satellite transponder and its application at home and abroad are reviewed, and the working principle and peripheral circuit composition of phase modulator are briefly described. Then the design scheme of phase modulator based on reflection is introduced in detail, and the results of envelope simulation analysis of ADS circuit are given. Finally, the development process of phase modulator circuit and the test results of each stage are described in detail. Through the analysis of the test results, the generality and high reliability of the circuit as a satellite transponder are verified.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：V556

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