基于FPGA的GPS软件接收机跟踪算法的优化和研究

摘要

As the GPS technology application in the field of daily life words and research more and more widely, and the GPS software receiver as the most key part of the GPS technology, the accuracy of its positioning and becomes more and more high accuracy and real-time requirements. Traditional GPS software receiver and now cannot meet the high precision, high efficiency requirements. Therefore, in this paper, on the basis of the original receiver tracking algorithm, the upgrade and optimization. Developed a tracking algorithm based on FPGA GPS software receiver optimization, completed the tracking algorithm in the noise bandwidth fast acquisition range, loop filter, loop gain, such as key parameters Settings. Before this algorithm is better than traditional algorithm has high stability, accurate and efficient advantages, through the test data, has reached the design requirements.%随着 GPS技术在日常生话和科研领域应用的越来越广泛，而GPS软件接收机作为作为GPS技术最关键的一部分，对其定位的准确性，精度以及实时性的要求就变得越来越高。传统的GPS软件接收机以及无法满足现在高精度，高时效性的要求。因此，本文在原有接收机跟踪算法的基础上，进行了升级和优化。开发了一个基于FPGA的GPS软件接收机优化的跟踪算法，完成了跟踪算法中噪声带宽、环路增益、快捕范围、环路滤波器等关键参数的设置。本算法具有比之前传统算法具有稳定度高，定位准确且高效的优势，经过数据测试，达到了设计要求。