February 12, 2013 - Garmin announced the GRA
5500, a high-performance, all-digital radar
altimeter for transport category, helicopter,
business and general aviation aircraft.
Using patent-pending digital signal processing
technology, the GRA 5500 works to provide smooth
altitude tracking resulting in a consistent and
highly accurate altitude above ground
indication, even over the most challenging
environments like rough terrain, tree canopies,
sand and choppy water.
“The GRA 5500 meets the highest altitude
accuracy standards only previously seen in
products for transport and military aircraft,
providing pilots unprecedented confidence in
their actual altitude,” said Carl Wolf, Garmin’s
vice president of aviation sales and marketing.
Because of its all-digital design, the GRA 5500
is able to intelligently process hundreds of
altitude measurements per second and apply
advanced digital filters to help detect and
mitigate false altitude returns.
In addition, the robust and rugged hardware is
designed to withstand even the harshest
environmental conditions, meeting the latest,
more rigorous flight test standards recently
issued by the Federal Aviation Administration
Patent-pending technology in the GRA 5500
incorporates built-in self-test monitors that
continuously cross check the data and system
integrity, assuring the pilot of an accurate
measurement of the height above ground.