A system for real time wide angle reconnaissance from low flying, high performance aircraft is described. The system combines a multiple lens-linear ccd array, airborne sensor head, a 7. 5 MHz data link; and a ground ...
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A system for real time wide angle reconnaissance from low flying, high performance aircraft is described. The system combines a multiple lens-linear ccd array, airborne sensor head, a 7. 5 MHz data link; and a ground based, dry silver film, laser beam recording system that produces hard copy imagery within 30 seconds of data acquisition. The airborne sensor employs five lenses, each with its own ccd array to cover a 140 degree ground swath. Resolution from 1000 feet in a push broom mode is 0. 75 foot. Data from the five arrays and synchronization, V/H and roll data are multiplexed into a single data line for airborne storage or direct transmission to the ground. On the ground, sync, roll and V/H are extracted as the video information is buffered in a dual line buffer.
A system for real time wide angle reconnaissance from low flying, high performance aircraft is described. The system combines a multiple lens-linear ccd array, airborne sensor head, a 7. 5 MHz data link;and a ground b...
详细信息
A system for real time wide angle reconnaissance from low flying, high performance aircraft is described. The system combines a multiple lens-linear ccd array, airborne sensor head, a 7. 5 MHz data link;and a ground based, dry silver film, laser beam recording system that produces hard copy imagery within 30 seconds of data acquisition. The airborne sensor employs five lenses, each with its own ccd array to cover a 140 degree ground swath. Resolution from 1000 feet in a push broom mode is 0. 75 foot. Data from the five arrays and synchronization, V/H and roll data are multiplexed into a single data line for airborne storage or direct transmission to the ground. On the ground, sync, roll and V/H are extracted as the video information is buffered in a dual line buffer.
This paper will describe an optical moving target indicator where two ccd area arrays are used to obtain target motion information. The optical input scene is imaged on a 16-K resolution element ccd area array, integr...
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This paper will describe an optical moving target indicator where two ccd area arrays are used to obtain target motion information. The optical input scene is imaged on a 16-K resolution element ccd area array, integrated and then shifted into a ccd analog memory.
The theoretical basis for infrared imaging in the 3 to 5 mu m spectral band with ccd addressed silicon, Schottky-barrier mosaics is presented. A unique approach is used which allows readout of majority carrier signals...
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The theoretical basis for infrared imaging in the 3 to 5 mu m spectral band with ccd addressed silicon, Schottky-barrier mosaics is presented. A unique approach is used which allows readout of majority carrier signals with depletion mode ccd's. Photo-response, contrast, and noise relationships for this type of all solid-statesensor are derived. It is seen that the use of the Schottky-barrier, internal-photoemission process, which is independent of lifetime and doping variations in the silicon wafer, leads to at least a factor of 100 improvement in infrared photoresponse uniformity. This advance permits for the first time the development of infrared cameras that are not limited by fixed pattern noise. Systems considerations such as cooling requirements, noise mechanisms, and cutoff wavelengths, are related to signal contrast and noise-equivalent-temperature.
The theoretical basis for infrared imaging in the 3 to 5 mu m spectral band with ccd addressed silicon, Schottky-barrier mosaics is presented. A unique approach is used which allows readout of majority carrier signals...
详细信息
The theoretical basis for infrared imaging in the 3 to 5 mu m spectral band with ccd addressed silicon, Schottky-barrier mosaics is presented. A unique approach is used which allows readout of majority carrier signals with depletion mode ccd's. Photo-response, contrast, and noise relationships for this type of all solid-statesensor are derived. It is seen that the use of the Schottky-barrier, internal-photoemission process, which is independent of lifetime and doping variations in the silicon wafer, leads to at least a factor of 100 improvement in infrared photoresponse uniformity. This advance permits for the first time the development of infrared cameras that are not limited by fixed pattern noise. Systems considerations such as cooling requirements, noise mechanisms, and cutoff wavelengths, are related to signal contrast and noise-equivalent-temperature.
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