Abstract:This paper systematically investigates the application of the BeiDou Navigation System in power emergency repair, focusing on core technologies and improvement strategies, including high-precision positioning, short message communication, ad hoc networking, multi-system integration, and image compression. To address the challenges of rapid fault localization, communication reliability, and data transmission in complex environments during emergency repairs, a stepwise ambiguity fixing PPP-AR solution based on the BeiDou-3 system is proposed. Additionally, a distributed ad hoc networking technique is integrated to construct an efficient emergency communication framework. An innovative narrowband error-correction image compression algorithm is also designed to overcome the bandwidth and error issues inherent in BeiDou''s short message communication. Experimental results demonstrate that the PPP-AR technique, combined with multi-system integration (BDS-3/GPS/Galileo), significantly reduces the convergence time for centimeter-level positioning, while the ad hoc network architecture greatly enhances communication coverage and reliability in harsh conditions. This study provides technological support for improving power repair efficiency, accelerating response speed, and enhancing operational safety.