国防科技大学学报2016，Vol.38Issue(2)：112-116,5.DOI:10.11887/j.cn.201602019
数据和导频通道的功率加权联合捕获算法
Power-weighted combining acquisition algorithm with data and pilot signals
摘要
Abstract
The modulation with different power of data and pilot channels will be used in the next generation of global navigation satellite systems.However,the traditional acquisition algorithms are mostly designed with equal-weighted coefficient of data and pilot channels.When the power of data and pilot channels is not equal,the traditional algorithms are not suitable for optimizing the performance.A power-weighted combining acquisition algorithm,which uses the different weighted coefficients for data and pilot channels,was proposed.The Least-Square fitting method was used to optimize the coefficients.The detection and false-alarm probabilities were derived with characteristic function of decision variable.The simulations prove that the acquisition threshold of the algorithm is improved by 0.4 dB when the power ratio of data and pilot channels is 1 ∶3,and the detection and false-alarm probabilities are 0.8 and 10 -3 respectively.关键词
非相干/联合捕获/导频通道/加权系数/特征函数Key words
incoherent/combining acquisition/pilot channel/weighted coefficient/characteristic function分类
信息技术与安全科学引用本文复制引用
田丰,唐小妹,欧钢..数据和导频通道的功率加权联合捕获算法[J].国防科技大学学报,2016,38(2):112-116,5.基金项目
国家自然科学基金资助项目 （）
