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本文介绍一种适用于矿区、军事地域、边防海岛间等场合使用的小型数字微波接力信道机的工程设计方法。信道机工作在 X 波段,共分8个波道,信道容量1024kb/s,可同时传32路△M 数字话和报,并设有一路勤务浅调频话路。2 DPSK 调制及相干解调接收方式。接收门限电平-90.5dBm,N_F=5.5dB,P_0≥100mW(20dBm),整机功耗10W 左右,并且信道机具有简单的遥测遥控功能。单跳接力距离20km,误码率10~(-5)。结构上严格按照“三防”要求设计,箱体与天线为整体结构,设备体积小,重量轻,可供单人背负行进。
This article introduces a kind of engineering design method which is suitable for the small digital microwave relay channel machine used in the mining area, military area and border island. Channel machine work in the X-band, is divided into 8 channels, the channel capacity of 1024kb / s, 32 channels can be transmitted at the same time △ M numbers and reported that there is a way to service light frequency channel. 2 DPSK modulation and coherent demodulation receive mode. Receiver threshold level -90.5dBm, N_F = 5.5dB, P_0 ≥ 100mW (20dBm), the whole power consumption about 10W, and the channel machine has a simple telemetry remote control. Single hop relay distance of 20km, bit error rate of 10 ~ (-5). Structurally in strict accordance with the “three defenses” requirements of design, box and antenna for the overall structure, equipment, small size, light weight, for a single person to carry.