短波单站定位中电离层的模型选择与修正

The selection and the modification of the ionospheric model in SSL

短波单站定位实现了仅用一个测向站就能确定短波发射台的方向及位置,在短波单站定位中,影响单站定位精度的主要因素来源于电离层模型及电离层参数是否与实际情况相符.作者介绍了短波单站定位机理和两种实用的电离层模型,并对基于这两种电离层模型的射线反跟踪算法进行了分析比较.为了进一步提高单站定位精度,还提出了利用已知台修正电离层模型,并设计实现了该模型.

Single Station Location （SSL） can locate the shortwave transmitter only using one direction-finding station, The main factor affecting the precision of SSL is whether the model and the parameters of the ionosphere accord with the fact, This author introduces the principle of SSL and two kind of applied ionospheric models and compares and analyses the radial inverse tracking arithmetics based on the two kind of ionospheric models. In order to improve the precision of SSL, this paper puts forward the idea of modifying the ionospheric model using known transmitters and designs and implements the ionospheric model.