它们要么直接向目标开炮，要么试着根据您的速度和方向来推算位置。
Either they will fire directly at their target, or they will try to project your position based on your speed and direction.
张遂和南宫说等人一起，用标竿测量日影，推算出太阳位置与节气的关系。
Togeth-er with Nan Gongshuo, he used a post to measure the shadow cast by the sun, and calculated the relations between the sun's positions and the solar terms.
利用GPS模块提供的位置数据进行定位，利用DR模块在失去GPS信号的情况下进行航位推算，从而实时的地为用户提供位置信息。
Using GPS module to get the data of position and using DR device to aid GPS module, the system can provide the users with the real-time location information.
应用推荐