A Focal Plane Array and Electronics Model fro CMOS and CCD Sensors in the AFIT Sensor and Scene Emulation Tool (ASSET)
Abstract
Electro-optical and infrared (EO/IR) sensor models are useful tools that can facilitate understanding a system's behavior without expensive and time-consuming testing of an actual system. EO/IR models are especially important where truth data is required but is sometimes impractical to obtain through experimentation due to expense or difficulties in procuring hardware. This work describes implementation of a focal plane array (FPA) model of CCD and CMOS photodetectors as a component in the AFIT Sensor and Scene Emulation Tool (ASSET). The FPA model covers conversion of photo-generated electrons to voltage and then to digital numbers. It incorporates sense node, source follower, and analog-to-digital converter (ADC) components contributing to gain non-linearities and includes noise sources associated with the detector and electronics such as shot, thermal, 1/f, and quantization noise. This thesis describes the higher fidelity FPA and electronics model recently incorporated into ASSET, and it also details validation of the improved model using EO/IR imager data collected with laboratory measurements. The result is an improved model capable of generating realistic synthetic data representative of a wide range of systems for use in new algorithm development and data exploitation techniques supporting a broad community of academic, commercial, and military researchers.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 21, 2019
- Accession Number
- AD1075051
Entities
People
- Fernando D Fernandez
Organizations
- Air Force Institute of Technology