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A radio altimeter (RA), also known as a radar altimeter (RALT), an electronic altimeter, a reflection altimeter, or a low-range radio altimeter (LRRA), measures altitude above the terrain currently beneath an aircraft or spacecraft by keeping track of the amount of time it takes for a radio wave beam to travel to the ground, reflect, and return to the craft.
In contrast to a barometric altimeter, which provides the distance above a specified vertical datum, often meaning sea level, this type of altimeter offers the distance between the antenna and the ground directly below it.
An electronic instrument that can be used in the air to measure an aircraft’s height above the ground directly below it is called a radio altimeter.
Despite the fact that the RA antenna is located at the bottom of the fuselage, electronic correction is done to allow the height (h) to be determined from the lowest wheel on the majority of bigger aircraft.
Although the radio altimeter is immediate and precise, it doesn’t indicate any high ground up ahead.
The global Radio Altimeter market accounted for $XX Billion in 2022 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2023 to 2030.
Launch of the ALT-9000 universal radio altimeter (RADALT) flight line test set was announced by Viavi Solutions Inc. (VIAVI). The ALT-9000 adds fibre optic delay to conventional radio frequency (RF) testing, enabling it to test all varieties of RADALTS on the market right now.
As manufacturers develop RADALTs with more complex waveforms to solve safety and security challenges in the aviation industry.
By sending a radio frequency (RF) signal down to the ground and then catching a reflection, the RADALT calculates the height of an aeroplane above the landscape.
Modern RADALTs employ more complicated waveforms to thwart any spoofing or jamming of the return signal, and the U.S. military has switched most of its aircraft to these types. Older RADALTs might not have the necessary interference protection once 5G networks start using C-band frequencies.
In order to handle both old and new RADALT kinds, as well as to enable rapid retesting to uncover faults that can disrupt flight operations, these trends demand revised testing technology and processes.
The VIAVI ALT-9000 is a portable test set that may be used with any kind of radio altimeter since it makes use of fibre-optic delay.
By testing the entire RADALT system, the operator is able to narrow down the source of a problem to the antenna, coaxial cable, line-replaceable unit (LRU), or indicator, avoiding the need to switch out or replace other system parts.
The ALT-9000 carries out thorough closed-loop system tests, imitates flying circumstances, and generates profiles for dynamic altitude simulations.
