Abstract

It is developed a method of information transmission with application of amplitude Single Sideband Hartley modulation (SSBH) allowing to increase of radio channel length for optical and fiber optic signal transmission systems where single sideband amplitude modulation (SSB) is used. Increase of communication range is provided due to application a sum of two orthogonal oscillations of the same frequency as a carrier (Hartley wave). It provides energy gain in 6 dB and 1.41 times increase of the amplitude of output signal of synchronous detector comparing to SSB in case of the same radiation power of transmitter and the same sensitivities of SSBH and SSB signals receivers. Application of SSBH and SSB modulation allows to provide the energy gain in transmitting channel approximately 15–20 times comparing to amplitude modulation (AM) application. It also provides increased security of SSBH transmission since in case of absence of modulation signal the transmitter does not radiate, that allows to provide energy saving in case of transmitter power supply with battery. Depending on the need we can use both upper and lower side bands.

中文翻译：

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单边带Hartley幅度调制

摘要

它是通过使用幅度单边带哈特利调制（SSBH）的应用而开发的一种信息传输方法，该方法可以增加使用单边带幅度调制（SSB）的光学和光纤信号传输系统的无线电信道长度。由于施加了与载波相同频率的两个正交振荡（哈特利波）之和，因此可以增加通信范围。在相同发射器辐射功率和相同灵敏度的SSBH和SSB信号接收器的情况下，与SSB相比，它提供的能量增益为6 dB，是同步检波器输出信号幅度的1.41倍。与幅度调制（AM）应用相比，SSBH和SSB调制的应用允许在发射通道中提供大约15–20倍的能量增益。由于在没有调制信号的情况下发射器不会辐射，因此它还提高了SSBH传输的安全性，这可以在使用电池为发射器供电的情况下节省能源。根据需要，我们可以同时使用上边带和下边带。