GB/T 44490.2-2024 Geographic information—Imagery sensor models for geopositioning—Part 2:SAR,InSAR,lidar and sonar

Scope

This document is applicable to remote sensing image applications and provides detailed specifications for the sensor models and metadata used in the georeferencing of remote sensing images from Synthetic Aperture Radar (SAR), Interferometric SAR (InSAR), Light Detection And Ranging (lidar), and Sound Navigation And Ranging (sonar) sensors. It also defines the metadata required for aerial triangulation of space-based and ground-based images. This document specifies the detailed information required to describe SAR, InSAR, lidar, and sonar sensors, including the relevant physical and geometric information needed to rigorously construct physical sensor models. Based on the need for precise georeferencing, this document provides mathematical formulas for rigorously constructing physical sensor models from two-dimensional image space to three-dimensional ground space and calculating related error propagation. This document does not stipulate how users should obtain geolocation data or the format or content of the generated data.

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