本文针对短时高速应用场景中卫星导航信号快速捕获的要求,对GNSS信号的捕获检测问题提出了一种改进的检测算法,其结合了N中取M检测算法和唐检测算法的优点,通过设置多门限检测机制,大大加快了信号存在时的确认速度和信号不存在时的剔除速度。经过大量的实际数据测试得到验证,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。 In this paper, aiming at the requirement of fast acquisition of satellite navigation signals in short-time high-speed applications, an improved detection algorithm for GNSS signal acquisition detection is proposed, which combines the advantages of the M detection algorithm in N and the detection algorithm in Tang, Multi-threshold detection mechanism, greatly speeding up the confirmation of the existence of the signal speed and signal removal speed does not exist. After a large number of actual data tests have been verified, the improved algorithm in detection probability without any loss, the capture detection speed relative to N in M ​​algorithm to increase 3 times, compared with the Tang detection algorithm to improve by 1 /