High-resolution hydrographic airborne laser scanner for surveying inland waters and shallow coastal zones

摘要

Repetitive surveying of inshore waters is becoming more and more essential to evaluate reservoir sedimentation, river degradation, water flow and water level dynamics, structure and zone variations of rivers and riparian areas. This can only be achieved in an effective way by employing hydrographic airborne laser scanning. A new laser scanner for acquisition of high-resolution hydrographic data dedicated for surveying inland waters and shallow coastal zones is introduced. Measurement results obtained with the compact airborne laser scanning system employing a narrow laser beam at 532 nm, operating at a net measurement rate of 110 kHz are presented. Advantages and limitations of this new approach are discussed and potential fields of applications are assessed.