For the first time ever, researchers can track the movements of bats with the help of a brand new algorithm utilizing radar technology, created by the University of Haifa and Tel Aviv University.
Ecology
May 31, 2023
0
180
Three studies now published in The Seismic Record (TSR) offer an initial look at the February 6, 2023 earthquakes in south-central Türkiye and northwestern Syria, including how, where, and how fast the earthquakes ruptured ...
Earth Sciences
May 23, 2023
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27
Using an aeronautic remote sensing system, Chinese scientists have obtained effective mountain glacier data during an ongoing airborne-ground science experiment on detecting the condition of Bayi Glacier in Haibei Tibetan ...
Earth Sciences
May 22, 2023
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2
Adding to the grim list of record ice losses, record air temperatures and record droughts, which have all hit the headlines recently, the temperature of the surface waters of our oceans is also at an all-time high. With an ...
Planetary Sciences
May 18, 2023
0
31
Kelvin waves, a potential precursor of El Niño conditions in the ocean, are rolling across the equatorial Pacific toward the coast of South America.
Earth Sciences
May 15, 2023
0
24
A crucial radar antenna on a European spacecraft bound for Jupiter is no longer jammed.
Space Exploration
May 12, 2023
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1776
A critical antenna is jammed on a Jupiter-bound spacecraft launched two weeks ago, the European Space Agency reported Friday.
Space Exploration
Apr 28, 2023
2
613
When one thinks of the damage that climate change is doing, it's probable that what comes to mind is a vision of huge lumps of ice dropping off one of the polar ice sheets and crashing into the ocean. While Greenland and ...
Planetary Sciences
Apr 27, 2023
0
107
NASA has finished its planning and is ready to go. Humans will soon be returning to the Moon—this time in a manned base. But, if this project is to succeed, astronauts must be able to grow their own food. Norwegian researchers ...
Space Exploration
Apr 24, 2023
0
5
Somewhere in a remote stretch of forest near Maine's border with Canada, rocks from space crashed to Earth and may be scattered across the ground—just waiting to be picked up.
Space Exploration
Apr 12, 2023
0
18
Radar is an object detection system that uses electromagnetic waves to identify the range, altitude, direction, or speed of both moving and fixed objects such as aircraft, ships, motor vehicles, weather formations, and terrain. The term RADAR was coined in 1941 as an acronym for radio detection and ranging. The term has since entered the English language as a standard word, radar, losing the capitalization. Radar was originally called RDF (Radio Direction Finder, now used as a totally different device) in the United Kingdom.
A radar system has a transmitter that emits microwaves or radio waves. These waves are in phase when emitted, and when they come into contact with an object are scattered in all directions. The signal is thus partly reflected back and it has a slight change of wavelength (and thus frequency) if the target is moving. The receiver is usually, but not always, in the same location as the transmitter. Although the signal returned is usually very weak, the signal can be amplified through use of electronic techniques in the receiver and in the antenna configuration. This enables radar to detect objects at ranges where other emissions, such as sound or visible light, would be too weak to detect. Radar is used in meteorological detection of precipitation, measuring ocean surface waves, air traffic control, police detection of speeding traffic, and by the military.
This text uses material from Wikipedia, licensed under CC BY-SA
