空军工程大学学报（自然科学版）2011，Vol.12Issue(1)：64-67,4.DOI:10.3969/j.issn.1009-3516.2011.01.014
BPSK-PM深空通信信号载波捕获方案
The Carrier Acquisition Scheme of BPSK- PM Signal
摘要
Abstract
BPSK -PM is a modulation mechanism in which BPSK is used as its sub -carrier modulation mode and PM as its main - carrier modulation mode. This mechanism makes the spectrum of the modulated telemetry signal separate from that of carrier signal, while the residual carrier can be applied in A/V measuring and tracking. This paper firstly introduces the BPSK - PM modulation mechanism and analyzes the spectrum characteristics of its modulation signal, and then proposes a mid - frequency digital reception and carrier acquisition scheme according to the specific application. The carrier acquisition scheme is divided into a frequency searching part based on FFT and a frequency tracking part based on digital frequency- lock loop technology, which are analyzed in details. Finally,this paper shows a practical application of the carrier acquisition scheme, and the effectiveness of the scheme has been preliminarily verified in the Martian deep -space exploration of China.关键词
载波捕获/BPSK-PM/频率搜索/频率跟踪Key words
carrier acquisition/ BPSK - PM/ frequency searching/ frequency tracing分类
信息技术与安全科学引用本文复制引用
王晓东,甘淼,王小锭,蒋伟,罗武..BPSK-PM深空通信信号载波捕获方案[J].空军工程大学学报（自然科学版）,2011,12(1):64-67,4.基金项目
国防预研基金资助项目(9140A22031010XXXX) （9140A22031010XXXX）
