The inertial navigation system of modern airliner,which output the navigation parameters various and independence,but error accumulated,and the land-based radio navigation system is better,which vulnerable to the influence of surrounding environment,electromagnetic interference etc outside noise and receiver noise.Combined the two navigation system,this paper puts forward the INS/RADIO integrated navigation system based on performance evaluation.According to the sensor output of the current integrated mode,figure out the actual navigation performance,then compared with RNP,which come from the navigation database.Choose the most precise integrated mode and the stations with RNP,finally complete position output.The simulation results show that the INS/RADIO integrated navigation have restrained the position noise of the Radio effectively,because of the Performance Evaluation,position precision in navigation system being further improved.%现代民机的惯性导航系统输出的导航参数多,自主性强,但误差随时间积累,而陆基无线电导航系统定位精度不受使用时间的影响,但易受周围环境、电磁干扰等外界噪声和接收机噪声的影响。综合两种导航系统的优点,本文提出了基于导航性能评估的INS/RADIO组合导航方案。根据当前组合模式的传感器输出计算出实际导航性能（ANP）,然后同导航数据库中预先设定的导航性能需求（RNP）进行比较,筛选出符合RNP的台站,并从中选择出精度最高的组合模式,最终完成位置输出。仿真结果表明,INS/RADIO组合导航能有效抑制无线电的位置噪声,由于导航性能评估的参与导航系统的位置精度得到进一步提高。
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