troposcatter การใช้

• The answer came by utilizing the technology of " troposcatter ".
• Troposcatter allows microwave communication beyond the horizon.
• Troposcatter systems have evolved over the years.
• This is used in troposcatter communications systems, operating at a few GHz, to communicate beyond the horizon.
• In January 1962, Secretary of Defense Robert McNamara approved the system of troposcatter units under the operational name of BACKPORCH.
• It tied into the AAC Aircraft Control and Warning System though the White Alice network of 33 troposcatter and microwave sites.
• At the inland stations, the nearly horizontally pointing troposcatter parabolic antennae had to be enclosed as part of the superstructure.
• Capabilities include tactical satellite, troposcatter, line-of-site, and other various radio systems for communicating with air and ground forces.
• The former Texas Tower No . 2 ( TT-2 ) troposcatter communications site, just south of the housing area, is also accessible on foot.
• MCL Site 070 ceased operations as a troposcatter repeater in April 1965 when the Mid-Canada Line was no longer economically feasible or required due to improvements in technology.
• MCL Site 060 ceased operations as a troposcatter repeater in April 1965 when the Mid-Canada Line was no longer economically feasible or required due to improvements in technology.
• MCL Site 050 ceased operations as a troposcatter repeater in April 1965 when the Mid-Canada Line was no longer economically feasible or required due to improvements in technology.
• In addition there are several less common radio propagation mechanisms, such as tropospheric scattering ( troposcatter ) and near vertical incidence skywave ( NVIS ) which are used in specialized communication systems.
• With communication satellites used for long-distance communication links, current troposcatter systems are employed over shorter distances than previous systems, use smaller antennas and amplifiers, and have much higher bandwidth capabilities.
• Fort Albany was chosen as a relay station for signals coming in from the Sector Control Site at RCAF Station Winisk and would retransmit those signals to Mid-Canada Line Site 060 Relay via tropospheric scatter ( troposcatter ).
• Since the facts of nuclear warfare also seemed to indicate that High Frequency ( HF ) Radio propagation might be disturbed by unfamiliar nuclear effects, this led to the consideration of exotic technologies such as troposcatter and meteor burst communication links.
• In 1968, the unit's name changed to the 223rd Mobile Communications squadron, as they received Troposcatter radios, High Frequency ( HF ) radios, a Tactical Communications Center, Technical Control facilities, Tactical Switchboards and Cryptographic functions.
• "' Tropospheric scatter "'( also known as "'troposcatter "') is a method of communicating with microwave radio signals over considerable distances  often up to 300 km, and further depending on terrain and climate factors.
• Raytheon is accused of failing to seek a determination from U . S . authorities over whether it had sufficiently commercialized a version of its " troposcatter " radio system after the Pressler Amendment, a 1990 law, prohibited U . S . military sales to Pakistan.
• The CNT link joined tropospheric scatterwave facilities being installed to link up Distant Early Warning Line sites, along a line stretching from Barrow, Alaska to the east side of Greenland, with a scatterwave antenna in Hay River, NWT . These troposcatter facilities, such as the ones between Elsa, YT and Tsiigehtchic, NT ( Arctic Red River ) completed in 1960, were also used from the same time to carry civilian long distance circuits until satellite facilities were implemented in the 1980s.