低频地波场强和二次相位因子计算的可视化实现  

Calculation of field strength and delay of low-frequency ground-waves realized with visualization

作　　者：王娜[1,2] 苏建峰[1] 李瑞敏[1,2] 

机构地区：[1]中国科学院国家授时中心,西安710600 [2]中国科学院研究生院,北京100039

出　　处：《时间频率学报》2012年第1期29-37,共9页Journal of Time and Frequency

摘　　要：准确计算地波场强和时延是利用BPL或罗兰-C定时的关键技术之一。利用VC++面向对象和可视化的程序设计实现了低频范围内任意距离上场强和二次相位因子的计算。MicrosoftWindows图形用户界面使得工程人员操作起来简单易懂,更加具有实用性。比较表明,该程序的计算结果与现有的数据吻合得非常好,计算结果准确度较高。Accurate calculation of field-strength and delay of ground-waves is a key technology in timing via BPL and Loran-C. In this paper the calculation of field-strength and second phase factor for low-frequency range and any distance is realized by using VC＋＋ object.-oriented and visualization programming. The Microsoft Windows graphical user-interface makes engineering persons to operate easily, and this interface is more understandable and more practical. The comparisons show that the calculation results coincide with available data very well.

关 键 词：场强 信号传播时延 二次相位因子 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术] P127.1[自动化与计算机技术—计算机科学与技术]