CN85105847A - 短波超狭频带无线电数据传输设备 - Google Patents

短波超狭频带无线电数据传输设备 Download PDF

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CN85105847A
CN85105847A CN198585105847A CN85105847A CN85105847A CN 85105847 A CN85105847 A CN 85105847A CN 198585105847 A CN198585105847 A CN 198585105847A CN 85105847 A CN85105847 A CN 85105847A CN 85105847 A CN85105847 A CN 85105847A
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supernarrow
shortwave
band
data transmission
band radio
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CN198585105847A
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徐福华
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Chongqing Hydrographic Instrument Factory Of Ministry Of Water Conservancy And P
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Chongqing Hydrographic Instrument Factory Of Ministry Of Water Conservancy And P
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Priority to CN198585105847A priority Critical patent/CN85105847A/zh
Publication of CN85105847A publication Critical patent/CN85105847A/zh
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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Abstract

本发明涉及一种短波超狭频带无线电设备。采用超狭频带(3赫)快速跟踪滤波技术，使得拥挤的短波频段内空隙可利用获得专用频道，低功率(1瓦)发射信号传输不受干扰。对于分散于广阔区域的信息测报优越于超短波及卫星通讯等。

Description

本发明涉及一种短波无线电传输设备，具有超狭频带（3～5～100赫）的调制器和解调器，并且采用快速跟踪滤波器，从而可以采用甚低功率（0.1～0.5～5瓦）的发射装置。
对于分散在广阔区域内的水情测报（雨量，水位）或性质相同的任务，依靠超短波或卫星通讯等方式，存在受干扰影响大和设备昂贵的缺点。尤其降雨衰减能导致卫星通讯暂时中断而暴雨洪泛时期恰为水情测报之关键时刻。本发明的超狭频带调制器和快速跟踪滤波解调器使得短波无线电成为最有利有效的手段。因为具有下列特点：（一）短波频段内的频率空隙均可利用易于获准专用频道（二）短波信道的干扰和噪音几乎毫无影响（三）允许电台音频输出端有用信号在很宽的电平范围内变化而无需使用复杂的自动增益控制（四）电离层变化效应影响极小，相应载频发射功率可以很低（五）采用快速跟踪滤波器可以应付频率漂移而能保证超窄频带之检波解调。
本发明解决的实施方案：（如附图所示）超窄频带快速跟踪技术和器件是实现短波超狭频带传输而专门研究发展的新技术和新器件，它包括超窄频带快速跟踪滤波（FPL）
和超狭频带快速移频键控（NFSK）
FPL容许单边带抑制载频式短波收发两电台之间频率发生较大失步仍能快速捕捉住电台音频输出端被噪音掩盖的信号，进而实行超狭带跟踪滤波。这样就大大降低了该制式电台中对频率的产生与重置的准确度和稳定度要求。只要电台音频输出端的信噪比≥-10分贝，收信机也能在±100赫的频率范围内，用不到10秒的时间，可靠地捕捉住预备信号。并进而对频移信号实现可靠地快速跟踪与鉴频，错误接收概率小于10-5，FPL环路噪声带宽为3赫。
大多数数据传输系统使用频移键控调制（FSK）其优点是众所周知的，与FPL相结合的NFSK进一步发挥了FSK的效益。以FPL为基础器件，以NFSK为调制解调方式，从而发展了一种重复利用短波段，实现低功率远距离数据传输的新技术，新体制，新系统，其特点是短波超窄频带快速跟踪（SNT）。

Claims (5)

1、一种短波无线电数据传输设备，其特征在于具有狭频带(1～100赫)调制器与解调器。
2、如权项1所述的无线电设备，其特征在于具有低功率发射装置（1～5瓦）。
3、如权项1所述的无线电设备，其特征在于具有超狭频带（1～5赫）调制器与解调器。
4、如权项1所述的无线电设备，其特征在于具有甚低功率发射装置（0.1～0.5瓦）。
5、如权项3所述的无线电设备，其特征在于具有甚低功率发射装置（0.1～0.5瓦）。
CN198585105847A 1985-08-02 1985-08-02 短波超狭频带无线电数据传输设备 Pending CN85105847A (zh)

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CN198585105847A CN85105847A (zh) 1985-08-02 1985-08-02 短波超狭频带无线电数据传输设备

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN198585105847A CN85105847A (zh) 1985-08-02 1985-08-02 短波超狭频带无线电数据传输设备

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CN85105847A true CN85105847A (zh) 1987-02-25

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CN198585105847A Pending CN85105847A (zh) 1985-08-02 1985-08-02 短波超狭频带无线电数据传输设备

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102340343A (zh) * 2011-07-13 2012-02-01 上海埃威航空电子有限公司 基于卫星导航广域增强系统的短波频率选择方法和系统
CN106850044A (zh) * 2017-01-18 2017-06-13 成都科脉通信技术有限公司 基于超短波通信的宽带卫星通信系统

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102340343A (zh) * 2011-07-13 2012-02-01 上海埃威航空电子有限公司 基于卫星导航广域增强系统的短波频率选择方法和系统
CN102340343B (zh) * 2011-07-13 2013-12-04 上海埃威航空电子有限公司 基于卫星导航广域增强系统的短波频率选择方法和系统
CN106850044A (zh) * 2017-01-18 2017-06-13 成都科脉通信技术有限公司 基于超短波通信的宽带卫星通信系统

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