摘要
为了满足卫星导航接收机在高动态应用场景中对卫星信号快速捕获的需求,本文针对全球导航卫星系统(global navigation satellite system,GNSS)信号的捕获检测问题提出了一种改进的检测算法。该算法结合了N中取M检测算法和唐检测算法的优点,考虑信号存在和不存在时的两种情况,通过设置多级门限检测机制,加快了信号存在时的检测确认速度和信号不存在时的剔除速度。实际数据测试表明,改进算法在检测概率没有任何损失的情况下,捕获检测速度相对于N中取M算法提高3倍,相对于唐检测算法提高1/3。
To ensure fast acquisition of satellite signals in high dynamic applications, an improved algorithm was proposed for signal detection during acquisition by global navigation satellite system. The algorithm combined the advantages of the M-of-N and Tong detection algorithms. Through the multi-threshold detection mechanism, the detection and rejection speed accelerated whether the signals exist or not. Numerous real data tests show that the im- proved algorithm is three times faster than the M-of-N detection algorithm and one-third times faster than the Tong detection algorithm without any performance deterioration.
作者
张超逸
曾丹丹
李金海
孙金海
阎跃鹏
ZHANG Chaoyi;ZENG Dandan;LI Jinhai;SUN Jinhai;YAN Yuepeng(Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China)
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
北大核心
2017年第10期1609-1615,共7页
Journal of Harbin Engineering University
基金
国家自然科学基金项目(61271423)
关键词
卫星导航接收机
高动态
快速捕获
全球导航卫星系统
N中取M检测算法
唐检测算法
多门限检测
捕获检测速度
satellite navigation receiver
high dynamic
fast acquisition
GNSS
M-of-N detection algorithm
Tong detection algorithm
multi-threshold detection
detection soeed in acquisition