Our planetary defense radar systems are about to get much, much stronger.
For the test, engineers equipped GBT with a radar transmitter using 700 watts of power. They pointed the transmitter at the moon and radar echoes were returned to the NRAO's Very Long Baseline Array , which has 10 antennas across the United States. The result was a hyper-detailed image of the Tycho Crater with 16.4-foot resolution — the highest-resolution image of the moon from Earth ever taken.The moon's Tycho Crater, as imaged by a prototype radar system at the Green Bank Telescope.
A detail image of the moon's Tycho Crater shows the high resolution of the prototype radar system at Green Bank Observatory. The moon's Tycho Crater in 16-foot resolution detail, as imaged by a prototype radar system at the Green Bank Telescope. The project's long-term goal is to equip the GBT with a 500-kilowatt radar, then use the VLBA and the future Next Generation Very Large Array as receivers. With nearly 1,000 times the output power of the prototype transmitter, the resulting images would be even sharper.
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