WFOVWide Field Of View
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* WFOV is desirable technology, but the remaining design and production challenges preclude near term proven technology availability.
To help improve target discrimination, the WFOV designs have added a moving filter wheel to the optical path to accommodate additional infrared spectral bands.
Some realities of WFOV payload integration with host vehicles may call for additional technology and engineering.
* WFOV may need to add image motion compensation mirrors in the optical path to retain image quality due to spacecraft bus vibrations, stability and drift characteristics that would otherwise spoil the optical image and its registration necessary for the success of imaging processing techniques and geolocation.
* The relatively slender WFOV multi-telescope designs will need a sufficiently stiff integrating structure to transfer attitude reference from telescope to telescope to maintain micro-radian level absolute bore-sight knowledge potentially precluding lower cost commodity bus options.
* An internal self contained line of sight knowledge calibration capability will be an essential part of WFOV payload design maturity.
* A thermal, solar and sun outage protection design must be completed to mature WFOV payload design.
The WFOV designs must address these complexities early in the acquisition to assure a smooth, predictable transition to the new technology.
This circumstance appears very relevant to OPIR WFOV alternatives.
This offers the DOD a sustained period during which it can thoroughly evaluate and develop WFOV capabilities and follow a minimal annual investment approach to reduce midterm and long-term risk.
The current CHIRP demonstration emphasizes assessing the validity of WFOV-expected simulations conducted during research, development, test, and evaluation (RDT&E) of third-generation infrared surveillance; additionally, it provides a baseline understanding of the basic performance of WFOV and integration of the payload on a commercial host.
After establishment of performance requirements, sensitivity, WFOV uniformity, and defect rates, technology demonstration can move from validating expected performance of the WFOV technology to design demonstrations that more closely examine the specific mission-performance demands that the DOD assigns to the missile-warning augmentation capability.