Passive Localization Using Time Difference of Arrival and Frequency Difference of ArrivalWC

• 作者: Botao Zeng Xiansheng Guo Yan Zhang
• 来源期刊: 电脑和通信(英文)
• 学科: 医学
• 关键词: Four-Satellite LOCALIZATION TDOA (Time DIFFERENCE of Arrival) FDOA (Frequency DIFFERENCE of Arrival) GDOP (Geometric DILUTION of Precision) Passive LOCALIZATION
• 年，卷（期）: 2018,（1）
• 页码范围: 65-73
• 页数: 9页
• 分类号: R73

摘要

In order to improve the accuracy and engineering feasibility of four-Satellite localization system, the frequency difference measurement is introduced to the four-Satellite TDOA (Time Difference of Arrival) localization algorithm. The TDOA/FDOA (Frequency Difference of Arrival) localization algorithm is used to optimize the GDOP (geometric dilution of precision) of four-Satellite localization. The simulation results show that the absolute position measurement accuracy has little influence on TDOA/FDOA localization accuracy as compared with TDOA localization. Under the same conditions, TDOA/FDOA localization has better accuracy and its GDOP shows more uniform distribution in diamond configuration case. The localization accuracy of four-Satellite TDOA/FDOA is better than the localization accuracy of four-Satellite TDOA.