科考船是装配多种调查设备,集成多种传感器,实现实时观测和数据处理的水上移动测量平台。本文基于科考船船体结构特点,提出了构建船体坐标系的方法,便于使用全站仪等设备进行测量。基于AHRS(Attitude and Heading Reference System)航...科考船是装配多种调查设备,集成多种传感器,实现实时观测和数据处理的水上移动测量平台。本文基于科考船船体结构特点,提出了构建船体坐标系的方法,便于使用全站仪等设备进行测量。基于AHRS(Attitude and Heading Reference System)航姿参考系统体积小、精度高等特点,提出测定AHRS安装偏角的理论和方法;基于船底大型传感器阵列类型,提出测定其安装位置和偏角的技术原理与方法。通过实例验证了该方法的实用性和有效性。展开更多
The depth from extreme points(DEXP)method can be used for estimating source depths and providing a rough image as a starting model for inversion.However,the application of the DEXP method is limited by the lack of pri...The depth from extreme points(DEXP)method can be used for estimating source depths and providing a rough image as a starting model for inversion.However,the application of the DEXP method is limited by the lack of prior information regarding the structural index.Herein,we describe an automatic DEXP method derived from Euler’s Homogeneity equation,and we call it the Euler–DEXP method.We prove that its scaling field is independent of structural indices,and the scaling exponent is a constant for any potential field or its derivative.Therefore,we can simultaneously estimate source depths with diff erent geometries in one DEXP image.The implementation of the Euler–DEXP method is fully automatic.The structural index can be subsequently determined by utilizing the estimated depth.This method has been tested using synthetic cases with single and multiple sources.All estimated solutions are in accordance with theoretical source parameters.We demonstrate the practicability of the Euler–DEXP method with the gravity field data of the Hastings Salt Dome.The results ultimately represent a better understanding of the geometry and depth of the salt dome.展开更多
文摘科考船是装配多种调查设备,集成多种传感器,实现实时观测和数据处理的水上移动测量平台。本文基于科考船船体结构特点,提出了构建船体坐标系的方法,便于使用全站仪等设备进行测量。基于AHRS(Attitude and Heading Reference System)航姿参考系统体积小、精度高等特点,提出测定AHRS安装偏角的理论和方法;基于船底大型传感器阵列类型,提出测定其安装位置和偏角的技术原理与方法。通过实例验证了该方法的实用性和有效性。
基金supported by the National Natural Science Foundation of China (Grant No.42176186).
文摘The depth from extreme points(DEXP)method can be used for estimating source depths and providing a rough image as a starting model for inversion.However,the application of the DEXP method is limited by the lack of prior information regarding the structural index.Herein,we describe an automatic DEXP method derived from Euler’s Homogeneity equation,and we call it the Euler–DEXP method.We prove that its scaling field is independent of structural indices,and the scaling exponent is a constant for any potential field or its derivative.Therefore,we can simultaneously estimate source depths with diff erent geometries in one DEXP image.The implementation of the Euler–DEXP method is fully automatic.The structural index can be subsequently determined by utilizing the estimated depth.This method has been tested using synthetic cases with single and multiple sources.All estimated solutions are in accordance with theoretical source parameters.We demonstrate the practicability of the Euler–DEXP method with the gravity field data of the Hastings Salt Dome.The results ultimately represent a better understanding of the geometry and depth of the salt dome.
