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A chirp is a signal in which the frequency increases (up-chirp) or decreases (down-chirp) with time. In some sources, the term chirp is used interchangeably with sweep signal . [ 1 ] It is commonly applied to sonar , radar , and laser systems, and to other applications, such as in spread-spectrum communications (see chirp spread spectrum ).
Oklahoma Violent Death Reporting System (OKVDRS) - is a collaborative effort between the Oklahoma State Department of Health, Office of the Chief Medical Examiner, and the OSBI. This national surveillance system collects information on violent deaths to include suicides, homicides, deaths from legal intervention (a subtype of homicide where the ...
In digital communications, chirp spread spectrum (CSS) is a spread spectrum technique that uses wideband linear frequency modulated chirp pulses to encode information. [1] A chirp is a sinusoidal signal whose frequency increases or decreases over time (often with a polynomial expression for the relationship between time and frequency).
Since particular machinery problems generate vibration at specific frequencies, machinery faults can be detected or diagnosed. Vibration Spectrum Analyzers use the signal from different types of sensor, such as: accelerometers, velocity transducers and proximity sensors. The uses of a vibration spectrum analyzer in machine condition monitoring ...
Surface acoustic wave sensors are a class of microelectromechanical systems (MEMS) which rely on the modulation of surface acoustic waves to sense a physical phenomenon. The sensor transduces an input electrical signal into a mechanical wave which, unlike an electrical signal, can be easily influenced by physical phenomena.
An Ohio man allegedly slammed a 15-month-old girl on the floor after she wouldn’t stop crying, fracturing her skull. Two weeks later, she died of her injuries.
He will lie in state there until Jan. 9. The state funeral will be held at the National Cathedral at 10 a.m. that day. President Biden is expected to deliver a eulogy for the late president.
Editor’s Note: Find the latest coverage on the stowaway here. Authorities in the United States have reviewed airport security footage as they continue to investigate how a woman sneaked on board ...
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