A novel X band transmitter for small deep space explorers

	A novel X band transmitter for small deep space explorers
	Liang, Xianfeng; Jiang, Yaxiang; Geng, Hao; Xiong, Weiming; An, Junshe
	2013
会议名称	64th International Astronautical Congress 2013, IAC 2013
会议日期	September 23, 2013 - September 27, 2013
会议地点	Beijing, China
页码	3105-3110
英文摘要	Design scheme of the X band transmitter that integrated data transmission and beaconing functions for YingHuo-1 Mars Probe based on the international collaboration project is specified. The transmitter does not only finish science data and telemetry data transmission from the Probe to the Earth stations, but also provide the beacon signals of different carrier frequency modes which are used to VLBI (Very Long Baseline Interferometry) tracking demonstrations between the Probe and the ground sites. RF carrier section based on DRO oscillator referenced to high stability USO (Ultra-Stable Oscillator) at 10.878MHz is to generate beacon signals of high frequency stability. The beacon schemes of Single frequency point beacon at 8424MHz, double frequency point beacons at 8402MHz and 8446MHz and three frequency point beacons at 8424MHz, 8402MHz and 8446MHz are separately chosen by the external control commands according to the requirement from VLBI demonstrations programs. Based on the CCSDS (the Consultative Committee for Space Data Systems) 401.0-B22 in Recommendations on data rates and modulated formats for deep space applications, the X band transmitter can be operated in PCM/BPSK/PM (Modulation index is 1.05) modulation mode with residual carrier to support the ranging function in the downlink telemetry data rates of 8bit/s∼16kbit/s. The X band transmitter with light weight, small volume and high efficiency is achieved,in which its mass is 1.45kg and RF output power with SSPA(Solid State Power Amplifier) based on four GaAs FET devices is more than 10W at 8424MHz on -35∼+65°C temperature conditions. Every unmodulated signal output levels is up to 10W in the single frequency point, 3W in the mode of two frequency points and 2W in the mode of three frequency points, respectively. The YingHuo-1 Radio Frequency Compatibility Test (RFCT) at European Space Agency/European Space Operations Centre (ESA/ESOC) in July 2009 was finished. The suggest results is that the transmitter of YH-lMars Probe assumed to be transmitting through High Gain Antenna and maximum distance (3.6e8km) can support TM(Telemetry) rates to 2kbps from TM link margin. ©2013 by the International Astronautical Federation. All rights reserved.
收录类别	EI
会议录	Proceedings of the International Astronautical Congress, IAC
会议录出版者	International Astronautical Federation, IAF
学科主题	空间技术
语种	英语
ISSN号	0074-1795
ISBN号	9781629939094
内容类型	会议论文
源URL	[http://ir.cssar.ac.cn/handle/122/569]
专题	国家空间科学中心_空间技术部
推荐引用方式 GB/T 7714	Liang, Xianfeng,Jiang, Yaxiang,Geng, Hao,et al. A novel X band transmitter for small deep space explorers[C]. 见:64th International Astronautical Congress 2013, IAC 2013. Beijing, China. September 23, 2013 - September 27, 2013.