摘要
根据机载激光测深系统的工作机理,分析梳理了研制过程中涉及的主要关键技术,包括:高重复频率激光器研制、大动态范围微弱光信号提取、海底回波识别、海面波浪改正、浅水与深水分离测量、高速多通道数字采集、海陆分界识别、定位测姿、水位改正和测深数据质量控制等技术。只有成功突破上述关键技术,才能实现《海道测量规范》要求的测深精度指标。
In view of the development of airborne laser bathymetry system the involved key technologies are analyzed. These technologies mainly include the development of high frequency laser, extraction of weak laser signal in a wide dynamic range, determination of the return signal from the bottom, correction of the sea surface wave, depth measurement of shallow water, acquisition of high-speed multichannel digital signal, recognition of land and water, determination of airplane position and altitude, correction of water level and quality control of depth data. Only when these key technologies are broken through successfully, can the depth data precision standard required in the specifications for hydrography be met.
出处
《海洋测绘》
2014年第3期73-76,共4页
Hydrographic Surveying and Charting
基金
国家自然科学基金(41374018)
关键词
海洋测绘
水深测量
机载激光测深系统
关键技术
marine surveying and mapping
bathymetry
airborne laser bathymetry system
key technology
