分析结果表明，FY 1C除可见光通道1衰减强烈外，其它各可见光、近红外通道衰减性能稳定。
Analysis results show that in most FY 1C channels the instrument functions well in orbit, except in Channel 1.
系统采用数控衰减、高线性度中放和I、Q正交双通道，具有较高的采样率和较宽的测量波门。
The system has digital control attenuator, high linear IF magnifier, I/Q channels, high speed A/D converters and wide measurement gate.
信号通道由衰减电路、阻抗变换电路、放大电路等电路组成。
Signal channel consists of attenuating circuit, impedance transformation circuit and amplification circuit.
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