An Operational Video Tape Recording System Utilizing Irig Standard 129-73  Segmented Helical Scan Recording Format
AffiliationEcho Science Corp.
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AbstractPart I. An Operational Video Tape Recording System. An Operational Video Tape Recording (OVTR) system has been developed which fulfills the requirements of the USAF prime specification ASD/ENACC-73-4. The system is comprised, in part, by a highly versatile MIL-E-5400 Airborne Video Recorder and Remote Control Unit which are designed to produce high band ,  video recordings in the environments encountered on deployment in jet fighter aircraft. The companion ground system consists of a video recorder/reproducer for playback of mission tapes and a video Discassette® recorder/reproducer with slow motion/stop action capability for complete analysis of the recorded data. The system design incorporates multi-line rate flexibility to provide record capability of video signals from a multitude of electro-optical sensors including FLIR, LLTV and scan converted radar. The high band performance of the OVTR system makes it suitable for utilization with numerous weapon systems such as PAVE TACK, TISEO, MAVERICK, WALLEYE, HOBO and PAVE SPIKE and various airborne ASW applications. Part II. Expanded Capability for a Wide Range of Instrumentation Applications. The OVTR system is easily expanded in capability to enable the recording of any type of instrumentation data that fits within a 6.5 MHz bandwidth, such as an 8 mB/s serial digital stream, radar, spread spectrum or other down converted communications data. The system features continuous data reproduction capability with no switching transients resulting from sequentially recombining the segmented scan data. The very precise timebase stability and high linearity are key performance factors in enabling the handling of these signals with extremely high fidelity. Further extensions in bandwidth, SNR and time-base stability are under development. Predictions are made on expected performance improvements. Other developments to extend the versatility of the transport systems will be discussed.
SponsorsInternational Foundation for Telemetering