Digital Capability for Cockpit Television Sensor Instrumentation Systems
Abstract
An approach is presented for incorporating digital capability into a video instrumentation system consisting of a solid-state CCD television camera and video cassette recorder. The approach consists of passive data acquisition from a MIL STD 1553B Multiplex Serial Data Bus with the acquired data being encoded into an unused portion of the video signal. The digital data is encoded as manchester format luminance excursions in the normally blanked horizontal rasters of the video vertical blanking interval. A laboratory prototype of this device (Bus-Monitor/Video-Encoder or BM/VE) was developed along with a device (or Video Decoder) for recovery of the digital data from the video signal. The BM/VE and Video Decoder were used in laboratory testing to establish the performance parameters and design requirements needed for an actual airborne application of the BM/VE approach. A video encoding format for fault-tolerant data recovery is also developed and presented. Test results demonstrate that the primary limitation of this approach is the video cassette recorder bandwidth and that even the lower bandwidth video recorders can support application-dependent capacities of 1-3 thousand digital 16-bit words per second.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1983
- Accession Number
- ADA139432
Entities
People
- Duane O. Hague Jr
Organizations
- Wright Laboratory