Comprehensive model of optical detection systems

Norman R. Guivens Jr.; Philip D. Henshaw

doi:10.1117/12.59230

1 June 1992 Comprehensive model of optical detection systems

Norman R. Guivens Jr., Philip D. Henshaw

Proceedings Volume 1633, Laser Radar VII: Advanced Technology for Applications; (1992) https://doi.org/10.1117/12.59230
Event: OE/LASE '92, 1992, Los Angeles, CA, United States

Abstract

Sensor simulation codes such as SPARTA''s optical sensor simulation (SENSORSIM) and the Defense Laser-Target Signatures (DELTAS) Code require a high fidelity computer model capable of simulating any type of detection system that might be employed in an optical sensor system. Detection system models for these codes must additionally satisfy sometimes conflicting needs of a diverse user community. Although current detection models in these codes are accurate and easy to use they are limited in the types of detection systems that they can simulate and lack the flexibility to incorporate new detection schemes that are still under development or that may be developed in the future. The authors are developing a comprehensive model of optical detection systems that can be integrated into signature simulation codes such as SENSORSIM and DELTAS. This model uses a radically different approach to simulate the performance of all existing and future detection systems. The model features a hierarchical structure that directly corresponds to the design of a detection system. The first (top) level of this hierarchy represents the overall detection system as an assembly of individual components the components are represented by the second level. Elements of some components such as image intensifier tubes may be represented by a third level. At the lowest level of the hierarchy which may vary from component to component a sequence of mathematical operations describes the behavior of each component or The model simulates a single instance of each random event using a cascaded noise model that is consistent with the philosophy of the SENSORSIM and DELTAS codes. Each detection system is defined by standard text files that follow an intuitive and efficient syntax corresponding to the hierarchy of the detection system model. This input structure allows components to be defined once and incorporated in many detection systems minimizing the library maintenance burden and also facilitates validation of detection system specifications. The specification files can also be transferred between computer systems electronically without special protocols or special conversion of embedded numerical data that would be required for binary files.

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Norman R. Guivens Jr. and Philip D. Henshaw "Comprehensive model of optical detection systems", Proc. SPIE 1633, Laser Radar VII: Advanced Technology for Applications, (1 June 1992); https://doi.org/10.1117/12.59230

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KEYWORDS

Systems modeling

Sensors

Mathematical modeling

Computer simulations

Chemical elements

Signal processing

Image processing

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