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IKONOS is a commercial earth observation satellite, and was the first to collect publicly available high-resolution imagery at 1- and 4-meter resolution. It offers multispectral (MS) and panchromatic (PAN) imagery. The IKONOS launch was called “one of the most significant developments in the history of the space age”. IKONOS imagery began being sold on January 1, 2000. It derived its name from the Greek term ''eikōn'' for image.〔(【引用サイトリンク】title= Imagery Sources )〕 == History == IKONOS was originated under the Lockheed Martin Corporation as the Commercial Remote Sensing System (CRSS) satellite. On April 1994 Lockheed was granted one of the first licenses from the U.S. Department of Commerce for commercial satellite high-resolution imagery. On October 25, 1995 partner company Space Imaging received a license from the Federal Communications Commission (FCC) to transmit telemetry from the satellite in the eight-gigahertz Earth Exploration Satellite Services band. Prior to launch, Space Imaging changed the name of the satellite to IKONOS. IKONOS comes from the Greek word for "image".〔 Two satellites were originally planned for operation. The launch of ''IKONOS-1'' on 27 April 1999 failed when the payload fairing of the Athena rocket failed to separate, preventing the satellite from reaching orbit. ''IKONOS-2'' was planned for launch in 2000, but was renamed ''IKONOS'' and was launched on 24 September 1999 from Space Launch Complex 6 (SLC-6) at Vandenberg Air Force Base in California. The imaging sensors are panchromatic and multispectral. This satellite has a polar, circular, sun-synchronous 681-km orbit and both sensors have a swath width of 11 km. Its weight is 1600 pounds (720 kg). In November 2000 Lockheed Martin received the "Best of What's New" Grand Award in the Aviation & Space category from ''Popular Science'' magazine. Space Imaging was acquired by ORBIMAGE in September 2005. The company was later renamed to GeoEye. GeoEye was acquired in 2013 by DigitalGlobe which operated IKONOS until April 2015 when the spacecraft was deactivated. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ikonos」の詳細全文を読む スポンサード リンク
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