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  2. Direction of arrival - Wikipedia

    en.wikipedia.org/wiki/Direction_of_arrival

    Find the direction relative to the array where the sound source is located; Direction of different sound sources around you are also located by you using a process similar to those used by the algorithms in the literature; Radio telescopes use these techniques to look at a certain location in the sky

  3. Acoustic location - Wikipedia

    en.wikipedia.org/wiki/Acoustic_location

    Swedish soldiers operating an acoustic locator in 1940. Acoustic location is a method of determining the position of an object or sound source by using sound waves. Location can take place in gases (such as the atmosphere), liquids (such as water), and in solids (such as in the earth).

  4. 3D sound localization - Wikipedia

    en.wikipedia.org/wiki/3D_sound_localization

    3D sound localization refers to an acoustic technology that is used to locate the source of a sound in a three-dimensional space.The source location is usually determined by the direction of the incoming sound waves (horizontal and vertical angles) and the distance between the source and sensors.

  5. Sound localization - Wikipedia

    en.wikipedia.org/wiki/Sound_localization

    Sound localization is a listener's ability to identify the location or origin of a detected sound in direction and distance. The sound localization mechanisms of the mammalian auditory system have been extensively studied. The auditory system uses several cues for sound source localization, including time difference and level difference (or ...

  6. Radio beacon - Wikipedia

    en.wikipedia.org/wiki/Radio_beacon

    In navigation, a radio beacon or radiobeacon is a kind of beacon, a device that marks a fixed location and allows direction-finding equipment to find relative bearing. But instead of employing visible light, radio beacons transmit electromagnetic radiation in the radio wave band. They are used for direction-finding systems on ships, aircraft ...

  7. Doppler radio direction finding - Wikipedia

    en.wikipedia.org/wiki/Doppler_radio_direction...

    Where F r is the frequency of rotation in Hz and F c is the target frequency in MHz. [13] [a] Consider the example of a truck hunting an FM radio station at 101.5 MHz, while driving around a 100 metres (330 ft) wide pad (50 metres (160 ft) radius) at 25 kilometres per hour (16 mph).

  8. Acoustical measurements and instrumentation - Wikipedia

    en.wikipedia.org/wiki/Acoustical_measurements...

    To prevent aliasing, many devices come with antialiasing filters, which cut the maximum frequency range of the device to a little less than one-half the maximum sampling rate, as prescribed by the Nyquist sampling theorem. Dynamic range is a common way to compare performance from one instrument to another. Dynamic range is a measure of how ...

  9. Radio navigation - Wikipedia

    en.wikipedia.org/wiki/Radio_navigation

    The low-frequency radio range (LFR, also "Four Course Radio Range" among other names) was the main navigation system used by aircraft for instrument flying in the 1930s and 1940s in the U.S. and other countries, until the advent of the VOR in the late 1940s.