This paper, through research, states the main physical, chemical and biological elements that affect the ageing of photographic plate and puts forward effective ways to preserve the aerial photographic plate.
阐述了影响底片老化的主要物理、化学和生物因素 ;提出了航摄底片长期保存的有效途径 ;认为只要保存方法正确 ,在适宜的环境条件下 ,航摄底片是可以长期保存
The GDCORS net distributes a secret in pearl triangle area station,RTK real time allocation result can satisfy the request of Photo-control-point Surveying measurement.
GDCORS网在珠三角地区基准站分布密,RTK实时定位结果可以满足航摄像控测量的要求。