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The Arrow program was launched as a response to the acquisition by Arab states of long range surface-to-surface missiles. [2] [3] The United States and Israel signed a memorandum of understanding to co-fund it in 1986, [4] [5] and in 1988 the United States Department of Defense Strategic Defense Initiative Organization (SDIO) placed an order with Israel Aircraft Industries for the Arrow 1 ...
The Prospero satellite, also known as the X-3, [2] was launched by the United Kingdom in 1971. It was designed to undertake a series of experiments to study the effects of the space environment on communications satellites and remained operational until 1973, after which it was contacted annually for over 25 years. [3]
The officer said the S-200 missile "behaved like a ballistic threat" with "an altitude, range and ballistic trajectory" that mimicked the Scud-class targets the Arrow 2 interceptor was designed to kill. [118] On October 31, 2023, an Arrow 2 missile intercepted a long-range ballistic missile launched at Israel from Houthis in Yemen. This was ...
Arrow 3 can be launched into an area of space before it is known where the target missile is going. When the target and its course are identified, the Arrow interceptor is redirected using its thrust-vectoring nozzle to close the gap and conduct a "body-to-body" interception. [30] Arrow 3 may have a reduced 30-year life-cycle cost. [25]
The variety of frequencies used, as well as the desire to have tightly focused downlinks for security, require a range of antennas, seen in the picture: 2 SHF downlink phased arrays; 2 satellite-to-satellite crosslinks; 2 uplink/downlink nulling antennas; 1 uplink EHF phased array; 6 uplink/downlink gimbaled dish antenna
A 2 m (6.6 ft) deployable antenna and a 1.3 m (4.3 ft) fixed Gregorian antenna. [2] The C band section has a single 1.6 m (5.2 ft) deployable antenna that is fed by six physical transponders. Four have 72 MHz of bandwidth and the other two have 88 MHz. The total available C Band bandwidth is thus 464 MHz (or 12.9 transponder equivalent). [2]
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The Ariel 2 satellite had a 40m non-directional antenna that was essentially a long wire that was unreeled from a drum in the satellite after being placed into orbit. [8] In order to remove the effects of Earth-based radio waves, the antenna was tuned to detect frequencies between 0.7 and 3.5 MHz. This choice was not arbitrary.
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