曝光台 注意防骗
网曝天猫店富美金盛家居专营店坑蒙拐骗欺诈消费者
APPENDIX B – SENSORS
Page B-5
the battlefield to increase the commander’s situational awareness, with a limited exploitation capability. These emitter locations will then be used to cue other ISR sensors in order to reduce their search times. TSP is an excellent example of reprogrammable technology (software definable systems) enabling rapid inclusion of new target types and capabilities.
Nuclear detection systems. Use of endurance UA outfitted with nuclear material detectors could play a key role in homeland defense over the next 25 years. Depending on the characteristics of the detection systems, either an aerostat or a Global Hawk-like long dwell aircraft could be the host platform. DoD strongly supports work to develop and refine these detectors, with an emphasis on increased sensitivity and long-range effectiveness.
ENABLING TECHNOLOGIES
HDTV video format. High definition television (HDTV) is becoming the industry standard format for video systems of the type flown on DoD tactical and medium altitude endurance UA. The JTA specifies that motion video systems should be based upon digital standards; to date, no fielded system complies. HDTV standards represent a fundamental shift in video technology – from an interlaced image, where a scene is scanned in two, temporally separate steps and recombined to form a full image, to a progressive scanning and display process, where an entire scene is scanned and reproduced in one step. Progressive scanning eliminates temporal skewing and is the underpinning to advanced video processing techniques. Initial analysis indicates that moving to the HDTV-specified formats and compression methods will result in an increase of about 2 NIIRS in image quality as compared to the current MQ-1 Predator video output. This increased resolution provides analysts with the advantage of the additional context provided by motion video coupled with image quality equal to some of the better digital framing cameras currently fielded.
While digital sensors have historically been large and expensive, technology has significantly improved options in both of these areas. Even though there are now focal array (camera) assemblies at even the high end of the digital television spectrum that will fit in small turrets, new optical systems are needed to fully exploit the capabilities of these imagers. Although some growth in turret size must be accommodated to take full advantage of the resolution these sensors offer, a challenge to industry will be to maximize optical performance in physically small turrets.
Standards. Currently, fielded video systems and data transfer protocols are not standardized; many are proprietary systems that are not interoperable. In addition, the increased amount of data generated by a digital video system may require additional bandwidth to move the data from the aircraft. Establishment of a common format allows COTS interoperability and insures that ground terminals will be able to interpret video data regardless of the aircraft providing that data. Equally as important, using a digital format reduces the deleterious effects of repeated image conversion from analog to digital and back along the image exploitation chain, improving overall image quality at the receiving station. Similarly, tagging the video frames with timely and complete metadata enables the opportunity to provide automatically generated precision geo-coordinates (PGM quality). A Department objective is to ensure compliance with the existing DoD/IC Motion Imagery Standards Board metadata standard and profiles for all full motion video capable UA.
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：
无人机系统路线图 Unmanned Aircraft Systems Roadmap(101)
