2 Overview
20 5700/5800 GPS Receiver User Guide
5700 Operation
2.4
COCOM Limits
The U.S. Department of Commerce requires that all exportable GPS
products contain performance limitations so that they cannot be used
in a manner that could threaten the security of the United States. The
following limitations are implemented on the 5700 receiver.
Immediate access to satellite measurements and navigation results is
disabled when the receiver’s velocity is computed to be greater than
1000 knots, or its altitude is computed to be above 18,000 meters. The
receiver continuously resets until the COCOM situation is cleared.
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