Puhlir renortino burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources gathering and maintaining the date nelS aÄpS and Sing fhSSion cf intamaton. Send comments regarding this burden estimate or any other aspect of «^collection cf informalon^ dingsuggestons for mduang Ws^rTrt^to Deoartnent of Defense Washington Headquarters Seivices, Directorate for Mtomation Operations and Reports (0704-0188), 1215 Jefferson Davis Highway, Surte 1204, Arlington, VA 22202-4^2f^£2te*I be^'CncSSandin^ any other provision of la», no person shall be subject to any penalty for failing to comply with a collection of information t it does not dsplay a currently valid OMB control number. PLEASE DO NOT RETURN YOUR FORM TO THE ABOVE ADDRESS. REPORT DATE (DD-MM-YYYY) 26-June 2001 REPORT TYPE Final TITLE AND SUBTITLEHelikite Elevated Platform (HEP) Phase I Final Report 6. AUTHOR(S) Rogers, Michael, E. (Fig. 1). Designed to lift a GPS pseudolite payload, it is also suitable for a number of other missions. The Phase I work developed the Baselme design for both the Carrier and Helikite. Trade studies were used to refine the system technical requirements, size the components and select the most suitable Government Furnished Equipment for the trailer and generator. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES)Carolina1.1 HEP CONCEPT Many military navigation and weapons delivery systems are depended upon Global Positioning System (GPS) signal. Unfortunately, these signals can be degraded or jammed, so the Army is examining deployment of GPS pseudolites. Pseudolites are near terrestrial transmitters that emit GPS signals substantially stronger than that received from interference or jamming. Pseudolite navigation needs a line-of-sight to the receivers, requiring that the pseudolites be elevated several hundred meters above the ground to reach ground based receivers.The HEP blimp can be flown at several hundred to a thousand meters altitude for low cost, long term pseudolite coverage of large areas. It consists of several unique components that, taken together, comprise a system far smaller and more versatile than any comparable unit. The blimp, a version of the patented Helikite, supports more payload for its size than any ordinary blimp. Furthermore, Helikite can operate in much higher winds than traditional blimp designs, improving system utility and capability m adverse weather. HEP will be very mobile and cost-effective through use of unique designs to reduce the need for ground crews to handle the blimp during launch and recovery. It is carried by a single trailer and can be readily operated by a single person. It can also be airlifted by aircraft or helicopter to forward sites and can provide coverage 24 hours a day for a week or more without maintenance or downtime.HELIKITE ELEVATED PLATFORM Final Report HEP Phase I Contract DAAB07-01-C-K206 HEP BASELINE SYSTEM DESCRIPTION A complete HEP system consists of a Helikite and aC...
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