中文摘要：

为定量分析特高压输电线路对GPS信号的影响，在我国首条1 000 kV特高压输电线路附近布设距离线路远近不同的多个观测点，分别在线路停电检修和带电运行情况下，利用GPS接收机进行数据采集。根据GPS卫星运行规律，利用TEQC软件截取两期观测卫星分布一致的观测值，从P1和P2多路径、L1和L2的信噪比、数据完好率等方面对GPS观测数据进行质量分析，结果表明：特高压输电线对距离线路远近不同点位的GPS信号均未产生可观测到的影响。

英文摘要：

In order to analyze the interference of ultra high voltage （UHV） transmission line on the GPS signals, several GPS stations with different distances to the first 1 000 kv UHV transmission line in Hubei province were constructed. Both live and offline GNSS observations were captured, and then were extracted with the same satellites. According to the GPS orbiting regularity, by using the software TEQC, the multipath of P1 and P2, signaltonoise ratio of L1 and L2, and data perfectness ratio of GPS observation data were analyzed. The results indicated that the obvious interference of the UHV AC transmission line to the GPS signals with difference distance had not been found.