computes the gravitational acceleration vector at a specified ％ ECF location using the JGM2 gravitational ellipsoid only. ％ Higher-order gravity terms (the \"gravity anomaly\") are ％ ingnored. Only the pure ellipsoid is used.

这是ecf的原代码，是个plugin，可以实现即时通讯。-ecf This is the original code, is a plugin can achieve instant messaging.

DarumaFramework library for ECF - Delphi

阵列天线方向：计算阵列方向图的3DB波束宽度、零点波束宽度、及副瓣电平(Array antenna direction: calculate the 3DB beamwidth, zero beam width and sidelobe level of the array pattern.)