地波传播由于稳定、可靠,而被广泛应用于通讯、导航与授时。地波传播主要受大地电参数的影响。由于实际地面的复杂性,要严格解出地波传播的场结构,事实上是不可能的,而通常所采用的等效电参数,则是处理实际地面对地波传播影响的一种简便而有效的方法。随着我国长波通讯,导航及授时的发展,需要对全国各类地区的等效导电率进行测量,为绘制 Ground wave propagation is widely used in communication, navigation and timing as it is stable and reliable. Ground wave propagation is mainly affected by the geoelectric parameters. Due to the complexity of the actual ground, it is virtually impossible to strictly solve the field structure of ground wave propagation. However, the equivalent electrical parameters that are usually used are a simple solution to the problem of actually affecting the propagation of ground waves And effective method. With the development of long-wave communication, navigation and timing in our country, it is necessary to measure the equivalent conductivities of various types of regions in China. For the purpose of drawing