地波场强计算,高频地波场强衰减计算，高频电磁波地波传播计算仿真，Fortran源程序，可以在cirr公开网址上获得。- The PC version of GRWAVE requires an IBM PC/AT or equivalent (80286 microprocessor) with a math co-processor and a minimum of 256 kilobytes of memory. Disk Contents:

UG 直接获取实体的三维尺寸 非常简单实用的功能 此程序的优点在于不闪屏,以最小的操作连续获取-UG<direct access the three-dimensional size of the entit. very simple and practical function The advantage of this procedure is that no splash screen, continuous access to a minimum operating

Gradient Algorithm with fixed step size to find the minimum of a function of several variables

使用CW方程，使用最小能量，采用脉冲推力，实现在一天内两航天器的交会对接。本质上就是一个交会轨道优化问题，由给定的条件优化选取设计变量，使目标函数得到最优值。-Using the CW equation, use the minimum energy, the use of pulse thrust, to achieve in a day two spacecraft rendezvous and docking. Is essentially an intersection orbit op