Time-Division Frequency Measurement and Localization Technology of Single-Satellite in Different Orbits Based on Optimal Observation Position

At present, the research on the single satellite frequency measurement and localization technology mainly focuses on the use of multiple satellite observation positions in a single flight orbit to forward the ground target source signals, but there are many limitations in locating the interference source with limited field of view. In this paper, based on the single-orbit single-satellite time-division frequency-measuring localization technology, a localization technology of single-satellite time-division Doppler frequency measurement in different orbits is proposed, which is based on the optimal observation satellite position. Firstly, the positioning model and the positioning equation of the single-satellite time-division Doppler frequency measurement and localization technology in different orbits are constructed. Secondly, a calculation formula for Geometric Dilution of Precision (GDOP) is derived and the optimal model of the observation satellite position is constructed. Finally, based on the positioning process, the minimum positioning error is targeted. Computer simulation results show that the availability and accuracy of the technique are improved significantly in the scene with limited field of view.