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Detection occurs when the cell under test exceeds the threshold. In most simple CFAR detection schemes, the threshold level is calculated by estimating the noise floor level around the cell under test (CUT). This can be found by taking a block of cells around the CUT and calculating the average power level.
Unlike some human-made sonars that rely on many extremely narrow beams and many receivers to localize a target (multibeam sonar), animal echolocation has only one transmitter and two receivers (the ears) positioned slightly apart. The echoes returning to the ears arrive at different times and at different intensities, depending on the position ...
Automatic target recognition (ATR) is the ability for an algorithm or device to recognize targets or other objects based on data obtained from sensors.. Target recognition was initially done by using an audible representation of the received signal, where a trained operator who would decipher that sound to classify the target illuminated by the radar.
"American Nightmare" victims Denise Huskins and Aaron Quinn worked with two small-town law enforcement officials to get kidnapper Matthew Muller to confess to more cold case crimes.
The Indianapolis Colts could show up to the stadium on Sunday with nothing to play for. Or the scenario may call for a victory so they can remain alive in the AFC playoffs.
See photos here. Her laid-back ensemble included a sporty zip-up jacket, black shorts, and a massive tan fur coat—the latter of which did most of the heavy lifting, sartorially speaking.
Some species of hawkmoths (Sphingidae) produce ultrasound capable of sonar jamming. [25] Sonar jamming capability has evolved independently in at least six subfamilies. [26] Because sonar jamming seems to require high duty cycle ultrasound, it is believed to be a derived form of the simpler ultrasound used for aposematism and mimicry. [27]
Mandatory Credit: Katie Stratman-Imagn Images (Katie Stratman-Imagn Images) No. 3 Iowa State has one more nonconference matchup before it heads into what promises to be a challenging Big 12 ...