改进型数据加窗法的高程粗差剔除研究

利用摆动式单波束探测水下微地形时,因掠射角、底质特性等因素对回波信号的影响,导致数字高程粗差产生。本文根据摆动式单波束的探测原理和工作特点,对多波束测量中的数据加窗法进行改进:将回波能量作为探测点的内在属性参与确定起始加窗点;加窗点采用实测点,并要求起始加窗点尽可能靠近整条测线上实测点的高程均值。由此提高了高程粗差剔除的准确性。在实际应用中,随机微地形的高程粗差被成功剔除。

Research on removing elevation gross errors based on improved data windowed law

In the use of swing-style single-beam detection of underwater micro-topography,the impact of grazing angle,characteristic of bottom material and some other factors on the echo signal resulted in digital elevation generated gross errors.The paper improved data windowed law in the multi-beam measurement based on single-beam swing detection principle and working characteristics,that is,making echo energy as internal attribute to confirm starting point windowed,actually detected points were used to the points w...