It is proved that the locating and depth measuring problem of the directional track system of HDD is raveled out preferably, and is signified in supplying the gap in the locating and depth measuring instrument in the country.

• 结果显示，较好地解决了水平定向钻进过程中钻头定位与深度测量等关键性技术问题，对于填补国内在高性能的定位与导向仪器方面的空白具有较重要的意义。