摘要
多普勒频移作为GPS接收机的基础量测量之一,其解算的正确性和精度将直接影响GPS解算结果的精度和正直性。在GPS诱骗中,多普勒频移的同步情况也直接影响诱骗的成功率以及被识别的难易程度。通过公式推导可知,多普勒频移取决于接收终端与收发装置的相对几何分布。同时,诱骗装置的补偿周期也对诱骗的识别难度有一定影响。由仿真分析可知:GPS诱骗装置的相对几何分布及其对频移偏差的补偿周期决定了该装置产生的GPS诱骗信号被识别的难易程度,同时,也从多普勒频移的角度为GPS诱骗识别提供了一种新的方法。
Doppler shift is one of the basic measurements of GPS receiver, and the correctness and precision of its solution will directly affect the accuracy and integrity of GPS solution. In GPS spoofing, the synchronization of Doppler shift also has a direct impact on the success rate of spoofing and the complexity of identification. Derived from the formula, Doppler shift depends on the relative geometric distribution of the receiving terminal and the transceiver. The compensation cycle of the decoy device also has influence on the recognition complexity of the decoy process. The simulation analysis shows that, the relative geometric distribution of the GPS spoofing device and its compensation cycle for Doppler shift deviation determine the recognition complexity of the GPS decoy signal generated by the device. It also provides a new method to recognize the GPS spoofing signal from the viewpoint of Doppler shift.
作者
韩震
王养柱
丁典
HAN Zhen;WANG Yang-zhu;DING Dian(Beihang University,Beijing 100089,China)
出处
《电光与控制》
北大核心
2018年第11期98-101,119,共5页
Electronics Optics & Control
关键词
GPS诱骗
多普勒频移
几何分布
补偿周期
诱骗识别
GPS spoofing
Doppler shift
geometric distribution
compensation cycle
spoofing recognition
