为使军用飞机实现区域导航，探讨了塔康系统满足区域导航要求的能力，提出一套基于牛顿迭代的位置估计和实际导航性能评估方案。仿真结果表明，该方法切实可行，可以满足工程应用需要。

To make the military aircrafts obtain the new capabilities known as area navigation (RNAV) the potentialities of Tactical Air Navigation System (TACAN) for RNAV were studied.A workable solution based on Newton-iterative method was presented for position estimation as well as real-time assessment of actual navigation performance (ANP).The simulation demonstrated the feasibility of the solution for the engineering application.