论文部分内容阅读
一、引言对流层散射传播通常能传输120路到240路模拟电话。传输容量的限制通常是由这种传播方式引起的幅度和相位失真造成的。要研究10兆比特/秒的数字信息的传输,就应当深入了解这种信道的特性。这次研究得到的结果可用来确定自适应系统的复杂程度,估算其发射功率电平。已经研制成功的测量台可在任何时刻测量对流层信道的幅度和相位对频率的响应。它可以同时研究两条空间分集的信道。这次试验线路的特性如下: 地球表面距离:134.3公里; 仰角:发射为1.6mrd,接收为0.5mrd; 发射功率:1千瓦; 频率:6375兆赫; 天线直径:发射3.6米,接收3米; 分析的带宽:20兆赫; 摆动频率:100赫。
I. INTRODUCTION Tropospheric scatter propagation can usually transmit 120 to 240 analog phones. The limitation of the transmission capacity is usually caused by the amplitude and phase distortion caused by this propagation mode. To study the transmission of 10 Mbit / s digital information, one should gain insight into the characteristics of such a channel. The results of this study can be used to determine the complexity of the adaptive system and estimate its transmit power level. Has been developed to measure the success of the measuring station tropospheric channel amplitude and phase response to the frequency. It can study two channels of space diversity at the same time. The characteristics of the test circuit are as follows: Distance from the Earth’s surface: 134.3 km; Elevation: 1.6 mrd for launch, 0.5 mrd for reception; Transmit power: 1 kW; Frequency: 6375 MHz; Antenna diameter: 3.6 m; Bandwidth: 20 MHz; Swing frequency: 100 Hz.