Nga sig. 0002 0 2009-07-21 nga standardization document frame Sensor Model Metadata Profile Supporting Precise Geopositioning
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NGA.SIG.0002_2.0 2009-07-21 NGA STANDARDIZATION DOCUMENT Frame Sensor Model Metadata Profile Supporting Precise Geopositioning (2009-07-21) Version 2.0 NATIONAL CENTER FOR GEOSPATIAL INTELLIGENCE STANDARDS Table of Contents Revision History iii 1.Introduction 1 1.1Background/Scope 1 1.2Approach 1 1.3Normative References 1 1.4Terms and definitions 2 1.5Symbols and abbreviated terms 6 1.Overview for Coordinate System Descriptions and Relationships 8 2.1General Coordinate Reference System Considerations 8 2.1.1 Nomenclature 9 2.2Frame Sensor 11 2.3Earth Coordinate Reference System 12 2.4Platform Coordinate Reference System 13 3.Frame Sensor Interior Descriptions 16 3.1Sensor Coordinate Reference System 16 3.2Typical Imagery Sensor Storage Layout 18 3.3Row, Column (r,c) to Line, Sample (ℓ,s) Coordinate Transformation 19 3.3.1.Array and Film distortions 20 20 3.3.2.Principal point 20 20 3.3.3.Optical distortions 21 21 3.3.4.Atmospheric Refraction 22 22 3.4External Influences 24 3.4.1.Curvature of the Earth 24 24 4.Collinearity Equations 24 4.1Development based on North-East-Down Coordinate Reference System 24 5.Application of Sensor Model 27 5.1Adjustable Parameters 27 5.2Covariance Matrices 29 6.Frame Sensor Metadata Requirements 31 Appendix A 43 Table of FiguresFigure 1. Nominal Relative GPS to INS to Sensor Relationship 9 Figure 2. GPS / INS Processing Block Diagram 10 Figure 3. Arched Retinal Camera Array 11 Figure 4. Multiple coordinate reference frames 12 Figure 5. Earth-centered and local surface (ENU) coordinate frames (MIL-STD-2500C) 13 Figure 6. Platform coordinate reference system and local (NED) frame 15 Figure 7. Earth and local platform (NED) coordinate frames 15 Figure 8. Platform coordinate reference system and local (NED) frame 16 Figure 9. Frame Camera / Sensor Example 17 Figure 10. Image Record reference frame 18 Figure 11. Pixel orientation within the frame sensor coordinate system 19 Figure 12. Placement of sensor axis 20 Figure 13. Radial optical distortion 21 Figure 14. Optical radial distortion effects 22 Figure 15. Collinearity of sensor perspective center, image, and corresponding object point 25 Revision History
The National Geospatial-Intelligence Agency (NGA) and Air Force Aeronautical Systems Center (ASC) have cooperated to standardize descriptions of the essential data characteristics necessary for precise positioning from a variety of sensor collection systems by creating “sensor models”. These information/guidance primers describe in detail the information about the physics and dynamics of the specific collection system required to implement photogrammetry equations to establish the geometric relationship between the image and object imaged. This is the first of the set of primers and also serves as the basic template for establishing similar documents for other types of sensors, e.g., synthetic aperture radar (SAR), pushbroom, whiskbroom, LIDAR, etc. This document will enable the validation and Configuration Management (CM) of geopositioning capabilities across the Distributed Common Ground/Surface System (DCGS) within the Imagery Intelligence (IMINT) Community and serve as a design document for the Department of Defense (DoD) Acquisition community. Directory: documents documents -> Concept stage documents -> Concept stage documents -> The great global switch-off documents -> Nonprofit grant application documents -> The Truth about the Rwandan Genocide documents -> Annual InStructional unit plan documents -> Chaos equipment included Download 307.8 Kb. Share with your friends:
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