Anti-Localization Uplink Communications in Satellite-Terrestrial Systems

2026-09-22

AI Summary

本文研究了卫星-地面系统中反定位上行通信问题，提出了一种基于协作干扰的方案，通过优化干扰编码和功率分配来最大化定位误差概率，同时保证通信可靠性。

Abstract

This paper investigates the anti-localization uplink communication in a satellite-terrestrial system, where a ground transmitter Alice communicates with a legitimate satellite receiver Bob in the presence of multiple cooperative adversarial satellites attempting to localize Alice with the time difference of arrival (TDOA) technique. Specifically, we propose a cooperative jamming-based scheme for such anti-localization communication,in which Alice exploits the superposition coding with power allocation to simultaneously transmit information/jamming signals for communication with Bob and for confusing signal detection/TDOA measurement at adversarial satellites, while Bob employs the combining vector technique to enhance the desired information signal and also suppress the jamming. We define a localization error probability (LEP) metric to jointly depict both the impacts of signal detection and TDOA measurement on localization performance, and then develop a theoretical framework for the LEP modeling under the proposed scheme. We further explore the joint optimal design of jamming coding and power for LEP maximization, subject to the constraints of AliceBob communication reliability and Alice's transmit power. An effective sample average approximation method is also provided to tackle this non-convex optimization problem. Finally, extensive numerical results are illustrated to validate our theoretical models and demonstrate how the cooperative jamming helps to provide an anti-localization guarantee while ensuring communication reliability

Problem

• Anti-localization
• Uplink Communication
• Satellite-Terrestrial Systems
• TDOA

Innovation

• Cooperative Jamming
• Superposition Coding
• Localization Error Probability (LEP)
• Power Allocation
• Time Difference of Arrival (TDOA)