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Its mission objectives were to map the surface of Venus by using synthetic-aperture radar and to measure the planetary gravitational field. [ 2 ] The Magellan probe was the first interplanetary mission to be launched from the Space Shuttle , the first one to use the Inertial Upper Stage booster, and the first spacecraft to test aerobraking as a method for circularizing its orbit.
May 6, 2019 · During this time, NASA was planning its own mission called the Venus Radar Mapper, later renamed Magellan, with the capability to map the planet down to a resolution of 120 meters using SAR. Magellan’s prelaunch goal was to map up to 70% of the planet during one 243-day imaging period, equivalent to one Venusian “day.”
May 6, 2019 · During this time, NASA was planning its own mission called the Venus Radar Mapper, later renamed Magellan, with the capability to map the planet down to a resolution of 120 meters using SAR. Magellan’s prelaunch goal was to map up to 70% of the planet during one 243-day imaging period, equivalent to one Venusian “day.”
During the mapping cycle 1 (left-looking) radar surface mapping on Venus (September 15, 1990 to May 15, 1991), around 70% of the Venusian surface was mapped by synthetic aperture radar. In cycle 2 (right-looking), 54.5% of the surface was mapped, mainly the south pole regions and gaps from cycle 1 during May 15, 1991 to January 14, 1992.
During the part of its orbit closest to Venus, Magellan's radar mapper imaged a swath of the planet's surface approximately 17 to 28 kilometers (10 to 17 miles) wide. At the end of each orbit, the spacecraft radioed back to Earth a map of a long ribbon-like strip of the planet's surface captured on that orbit.
Venus Radar Mapper (VRM): Multimode radar system design The surface of Venus has remained a relative mystery because of the very dense atmosphere that is opaque to visible radiation and, thus, normal photographic techniques used to explore the other terrestrial objects in the solar system are useless. The atmosphere is, however, almost transparent to radar waves and images of the surface have ...
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Feb 1, 1987 · RADAR SYSTEM Radar is used for Venus mapping since it can penetrate the thick clouds of Venus. Real aperture radars can be used to provide images, but the along- track resolution is poor. The synthetic aperture radar, or SAR, takes advantage of spacecraft motion to create a synthetic aperture corresponding to an an- tenna length many times the real length.
