论文部分内容阅读
为了提升捕获中获得的载波频率精度,传统捕获算法通常采用增加信号相关积分时间的方式,这导致计算量大幅增加,硬件要求也要提高以满足导航实时性需要。因此,提出了一种新的方法:在信号捕获成功之后加入精化环节,提升捕获环节获得的载波频率精度。阐述了精化算法的原理及其数学分析方法,进行了实验验证,结果证明了该捕获精化算法的有效性。
In order to improve the accuracy of the carrier frequency obtained in the acquisition, the traditional acquisition algorithm generally adopts the method of increasing the signal-related integration time, which leads to a substantial increase in the amount of computation and the hardware requirements to be improved to meet the real-time navigation needs. Therefore, a new method is proposed: adding the refinement after successful signal acquisition to improve the carrier frequency accuracy obtained in the acquisition. The principle of refinement algorithm and its mathematical analysis method are expounded, and the experimental verification is carried out. The results show the effectiveness of this algorithm.