Abstract
This paper reports on a demonstration in support of the NASA Weather Information Communications (WINCOMM) program of providing Corridor Integrated Weather System (CIWS) weather products for cockpit display via data link. The CIWS weather products include the Regional Convective Weather Forecast (RCWF), which provides up to one-hour forecasts of storm activity. CIWS graphical weather products are compressed using the Lincoln-developed Weather-Huffman compression technique and then transmitted using a generic data link interface developed to allow a variety of methods (e.g., VDL-2, SATCOM, etc) to be employed in the demonstration. The interface definition is sufficiently general to accommodate both broadcast and request/reply modes of operation, and to allow selection of the appropriate parameters (i.e., data rate, image size, etc) for a particular type of data link. The received products are decompressed and displayed on a PC laptop qualified for flight use in NASA testbed aircraft. A Graphical User Interface (GUI) was developed for the airborne display in conformance with FIS-B weather data display requirements and emerging Electronic Flight Bag (EFG) standards. Results are presented on supportable update rates for various data links for routine and worst-case weather conditions.
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