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一种微纳卫星UHF地面接收设备的设计
2020年电子技术应用第8期
何林飞,李晓飞,韩俊博
天津讯联科技有限公司,天津300000
摘要: 针对常规微纳卫星的地面UHF(超高频) 接收设备复杂、系统庞大问题,提出了一种使用软件无线电芯片AD9361简单易行的地面接收方案。设备由射频前端、基带处理和上位机部分组成。通过对射频链路、灵敏度进行分析,从理论上确保方案的可行性。通过对模拟信号源接收实验,结果表明该UHF接收设备方案切实可行,并已在微纳卫星信号实收测试中得到应用。
中圖分類號(hào): TN927;V556
文獻(xiàn)標(biāo)識(shí)碼: A
DOI:10.16157/j.issn.0258-7998.191343
中文引用格式: 何林飛,李曉飛,韓俊博. 一種微納衛(wèi)星UHF地面接收設(shè)備的設(shè)計(jì)[J].電子技術(shù)應(yīng)用,2020,46(8):92-94,100.
英文引用格式: He Linfei,Li Xiaofei,Han Junbo. Design of UHF receiving equipment for micro/nano satellite[J]. Application of Electronic Technique,2020,46(8):92-94,100.
Design of UHF receiving equipment for micro/nano satellite
He Linfei,Li Xiaofei,Han Junbo
Tianjin Xunlian Technology Co.,Ltd.,Tianjin 300000,China
Abstract: In view of the complexity and huge system of UHF(ultra-high frequency) telemetry ground station of conventional micro/nano satellite,a simple ground receiving scheme using AD9361 is designed. The equipment is composed of RF front-end, baseband processing and upper computer. Through the analysis of RF chain and sensitivity, the feasibility of the scheme is ensured theoretically. Through the experiment of the analog signal source receiving, the results show that the scheme of the UHF receiving equipment is feasible and has been applied in the micro/nano satellite signal receiving test.
Key words : micro/nano satellite;ultra-high frequency telemetry;AD9361;sensitivity

0 引言

    微納衛(wèi)星設(shè)計(jì)周期短、成本低,受到商業(yè)航天界的青睞[1]。USB(S頻段統(tǒng)一測(cè)控系統(tǒng))和UXB(X頻段統(tǒng)一測(cè)控系統(tǒng))頻段均需要向無(wú)線電主管部門進(jìn)行頻率申請(qǐng),成本高且周期長(zhǎng),因而絕大多數(shù)微納衛(wèi)星均選用VHF/UHF(甚高頻/超高頻)業(yè)余無(wú)線電、無(wú)需申請(qǐng)的頻段進(jìn)行測(cè)控[2]。

    本文提出一種UHF頻段的衛(wèi)星地面接收設(shè)備的設(shè)計(jì)方案,所針對(duì)的星上遙測(cè)接口為:

    (1)載波頻率:410 MHz±4 MHz;

    (2)調(diào)制方式:BPSK;

    (3)碼速率:4 096 b/s;

    (4)星上發(fā)射功率:≥26 dBm;

    (5)星上天線增益:≥-3 dBi;

    (6)幀長(zhǎng):128 B(1 024 bit),每秒4幀;

    (7)同步頭:EB90。




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作者信息:

何林飛,李曉飛,韓俊博

(天津訊聯(lián)科技有限公司,天津300000)

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