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constant bit rate
常數位元速率
Senast uppdaterad: 2006-09-06
Användningsfrekvens: 1
Kvalitet:
technology experiment of a deep space probe and onboard computers; low bit-rate communication from deep space; and measurement of the radiation environment.
对深空探测器及所载计算机进行技术试验;自深空进行低码率通信;以及对辐射环境进行测量。
a typical user terminal, operating at an uplink bit rate of between 128 and 768 kbps, would employ a small-aperture antenna with a diameter of 66 cm and a solid-state power amplifier (sspa) of 1-3 w. all radio frequency components (sspa, low noise amplifier, and up/down-converters) would be integrated into a small outdoor unit mounted on the reflector.
所有无线电频率部件(固态功率放大器、低噪声放大器和上/下变频器)都将集中装入一个固定在反射器上的小室外单元中。