过去,我院航测一般采用先成图后勘测的方法,由线路专业提出成图范围,航测队进行航带设计及测图。多年来的实践使我们感到这种方法还存在一些问题。主要表现在航测成图与初测工作脱节。虽然航摄和成图面积很宽,但仍然满足不了线路初测和初步设计的要求,往往造成大量补图甚至补飞,使航测和初测工 In the past, our hospital aerial survey commonly used the method of forming a map after the survey, proposed by the line professional mapping range, the navigation team to design and mapping chart. Years of practice have made us feel that there are still some problems with this approach. Mainly reflected in aerial mapping and preliminary test work out of touch. Although the aerial photo and mapping area is very wide, but still can not meet the requirements of the initial test and preliminary design of the circuit, often resulting in a large number of make up or even make up, make aerial survey and preliminary test