Description

Detailing the criteria, specifications, and constraints of the Sensor-Model. These requirements will outline the functionality and performance of this project.

See below for the process of writing engineering requirements:

Requirements Engineering

What is a Sensor-Model:

The physical sensor model incorporates the internal parameters of the imaging payload as well as the exterior orientation parameters of the satellite itself to be able to describe a key geometric relationship.

1. Relationship between image coordinates to object (Earth) coordinates

Application of the FINCH Sensor-Model

• Spatial calibration
  • Provide basis for quality control of spatial information after launch
  • Over the duration of a mission, internal and external biases can arise due to manufacturing, thermal effects, and aging of sensor components which can affect the accuracy of the relationships described by the original sensor model
    • Recalibration from the original model can then be calculated from photogrammetry techniques
• Photogrammetric calibration
  • Provide basis for spectral-spatial registration allowing for scientific information to be taken from our satellite with improved accuracy
    • Alignment of ground-truth and remotely sensed data
      • Orthorectification
      • Geolocation
      • Georeferencing
      • Block-Bundle Adjustment
• RPC coefficients can be solved for using the physical sensor model to be provided with components of the physical sensor model in the imaging metadata
  • This allows for open source use of our satellite imagery

Tasks

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Notes

• Literature Review:
  • A generic pushbroom sensor model for high-resolution satellite imagery [LINK]
  • A generic pushbroom sensor model for planetary exploration [LINK]
  • Pixel geolocation algorithm for satellite scanner data [LINK]
  • A comprehensive study of the rational function model for photogrammetric processing [LINK]
  • Accuracy assessment of Quickbird stereo imagery [LINK]
  • Bias compensation in a rigorous sensor model and rational function model for high-resolution satellite images [LINK]
  • On RPC model for satellite images [LINK]
  • To Bundle Adjust or Not: A Comparison of Relative Geolocation Correction Strategies for Satellite Multi-View Stereo [LINK]
• [FINCH-DataProcessing-Orthorectification-SensorModel]: The FINCH Sensor-Model shall describe the relationship between 3D points to their 2D projections