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Telemetry Transmitter Frequency Stability Evaluation

机译:遥测变送器频率稳定性评估

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All satellite telemetry transmitters use quartz crystals to synthesize their downlink frequency. Higher downlink frequency designs have evolved from lower frequency designs. Design techniques typically simply increase the crystal frequency multiplier, therefore crystal frequency instability is magnified in higher frequency designs. At some point, the transmit frequency stability will start to degrade the telemetry reception performance. This paper describes the search for appropriate measurements, metrics, impact assessment, and simulation to characterize and screen for acceptable performance.
机译:所有卫星遥测变送器都使用石英晶体来合成其下行链路频率。更高的下行链路频率设计从较低的频率设计演变。设计技术通常简单地增加晶体倍增器,因此晶体频率不稳定性在较高的频率设计中放大。在某些时候,发射频率稳定性将开始降低遥测接收性能。本文介绍了对可接受性能的表征和屏幕进行了适当的测量,度量,影响评估和模拟的搜索。

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