【摘要】：毫米波(60GHz)頻段具有大氣衰減大、可用頻帶寬等特點。毫米波星間鏈路,能通過地面大氣層屏蔽電磁波干擾,防止有用信號被地面非法用戶偵察接收,實現(xiàn)空間保密通信,是星間鏈路技術(shù)的發(fā)展趨勢。但是,隨著工作頻段提高,星間鏈路天線波束寬度變窄,要求天線指向更精確,只靠程控跟蹤無法達(dá)到要求,通過天線的自動捕獲跟蹤建立星間數(shù)據(jù)傳輸鏈路成為毫米波星間鏈路的關(guān)鍵技術(shù)。角跟蹤接收機是自動跟蹤系統(tǒng)中的重要設(shè)備。本文在研究了自跟蹤體制、單通道單脈沖角跟蹤系統(tǒng)和角跟蹤接收機原理基礎(chǔ)上,對毫米波頻段的寬帶角跟蹤接收機的關(guān)鍵指標(biāo)及實現(xiàn)方式進(jìn)行了研究,確定整機方案,開展射頻前端關(guān)鍵模塊設(shè)計。對從寬帶信號中提取角誤差信號的方法及實現(xiàn)途徑進(jìn)行了研究；最后完成射頻前端研制調(diào)試,并進(jìn)行測試：以FPGA為主搭建了硬件平臺,在平臺上對提出的角誤差信號處理算法進(jìn)行了實現(xiàn)與驗證；進(jìn)行整機聯(lián)調(diào),并對整機性能進(jìn)行詳細(xì)測試,獲得具體的實驗數(shù)據(jù),實驗結(jié)果驗證了本文提出的整機方案的可行性和正確性。
[Abstract]:Millimeter wave (60GHz) band has the characteristics of large atmospheric attenuation and wide available band. Millimeter wave inter-satellite link can shield electromagnetic wave interference through the ground atmosphere, prevent useful signals from being reconnoitred and received by illegal users on the ground, and realize space secure communication, which is the developing trend of inter-satellite link technology. However, with the increase of the operating frequency band, the beam width of the inter-satellite link antenna becomes narrower, and the antenna direction is required to be more accurate, which cannot be achieved by program-controlled tracking alone. It is the key technology of millimeter wave inter-satellite link to set up the inter-satellite data transmission link through the automatic acquisition and tracking of the antenna. Angle tracking receiver is an important equipment in automatic tracking system. On the basis of studying the principle of self-tracking system, single channel single pulse angle tracking system and angle tracking receiver, this paper studies the key index and realization mode of wideband angle tracking receiver in millimeter wave frequency band, and determines the scheme of the whole system. Develop RF front-end key module design. The method of extracting angle error signal from wide band signal and the way to realize it are studied in this paper. Finally, the RF front-end development and debugging are completed and tested: the hardware platform based on FPGA is built, and the proposed angular error signal processing algorithm is realized and verified on the platform; The performance of the whole machine is tested in detail, and the concrete experimental data are obtained. The experimental results verify the feasibility and correctness of the whole machine proposed in this paper.
【學(xué)位授予單位】：西安電子科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TN927.2

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本文編號：2467200