Anti-frequency Offset Method for Precision Synchronization on Highly Dynamic Condition Based on the Least Squares
Wang Xu-hua Bai Peng Li Ming-yang Li Huan-yu Li Meng-da
Research Center for Integrated Electronic & Information System and Electronic Countermeasure Technology, Air Force Engineering University, Xi'an 710051, China
Abstract：How to achieve precise synchronization is a technical problem that must be addressed in today,s military operations in the highly dynamic conditions. In the conditions, the bit rate offset and carrier frequency offset will affect the precise synchronization accuracy. An improved Pseudo Noise (PN) code phase measurement method based on the least squares method is proposed, and the precise synchronization ability of this method in high-dynamic conditions is proved by theoretical analysis and simulation. The theoretical analysis shows that the method can eliminate the impact of carrier frequency offset and be of strong anti-noise ability. While the numerical simulation manifests that this method is not sensitive to bit rate offset when the length of the selected PN sequence is not very long, and proves that it is of strong anti-frequency offset. The measurement results demonstrate that this method not only achieves a high measurement accuracy, but also possesses good anti-noise and anti-frequency offset ability.
王徐华, 柏鹏, 李明阳, 李寰宇, 李孟达. 基于最小二乘法的高动态条件下抗频偏的精确同步方法[J]. 电子与信息学报, 2012, 34(11): 2755-2760.
Wang Xu-Hua, Bai Peng, Li Ming-Yang, Li Huan-Yu, Li Meng-Da. Anti-frequency Offset Method for Precision Synchronization on Highly Dynamic Condition Based on the Least Squares. , 2012, 34(11): 2755-2760.
2012, Vol. 34 
