The flex power technology of satellite navigation systems can improve the anti-jamming ability of navigation signals, but the flex power technology may have many effects in navigation and positioning. In this paper, the effects of the BeiDou Navigation Satellite System (BDS) flex power on differential code biases (DCBs) estimation and precise point positioning (PPP) convergence were researched. First, the variation characteristics of the carrier-to-noise density ratio and daily DCB products during BDS flex power active periods were analyzed. Then, the influence of BDS flex power on DCB estimation was examined by different DCB estimation strategies. Finally, the convergence performance of PPP algorithms using different DCB corrections during BDS flex power active periods was investigated. Results show the B3I signals of the BDS-2 Geostationary Orbit (GEO), Medium Earth Orbit (MEO), and Inclined Geosynchronous Orbit (IGSO) satellites have the capability of flex power. The BDS observation data during flex power events that occurred on DOY 029 in 2021 were analyzed. Estimates derived from reference satellite constraint indicate that the DCB of the satellites without flex power activated did not change, whereas the DCB of the IGSO satellites with flex power activated increased by 10–15 ns. When the flex power was activated at part of the DOY 029, 2021, the correction of daily DCB products resulted in the extension of BDS PPP convergence time for most stations within the flex power coverage area, regardless of whether the flex power was activated; however, the convergence time of PPP was unaffected if the station was outside the flex power coverage area.

卫星导航系统的弹性电源技术可以提高导航信号的抗干扰能力，但弹性电源技术在导航定位方面可能会产生很多影响。本文研究了北斗卫星导航系统（BDS）弹性功率对差分码偏差（DCB）估计和精密单点定位（PPP）收敛的影响。首先，分析了北斗弹性功率活跃期间载噪比和日DCB产品的变化特征。然后，通过不同的DCB估计策略考察了BDS弹性功率对DCB估计的影响。最后，研究了BDS弹性功率活跃期间使用不同DCB校正的PPP算法的收敛性能。结果表明，北斗二号地球静止轨道（GEO）、中地球轨道（MEO）和倾斜地球同步轨道（IGSO）卫星的B3I信号具有灵活的功率能力。对2021年DOY 029发生的弹性功率事件期间的北斗观测数据进行了分析。从参考卫星约束得出的估计表明，未激活弹性电源的卫星的 DCB 没有变化，而激活弹性电源的 IGSO 卫星的 DCB 增加了 10-15 ns。DOY 029, 2021部分时间激活弹性功率时，每日DCB产品的修正导致弹性功率覆盖范围内大部分站点的北斗PPP收敛时间延长，无论是否激活弹性功率；然而，如果站点位于灵活功率覆盖区域之外，则 PPP 的收敛时间不受影响。