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Time of arrival (TOA or ToA) is the absolute time instant when a radio signal emanating from a transmitter reaches a remote receiver. The time span elapsed since the time of transmission ( TOT or ToT ) is the time of flight (TOF or ToF).
An alternative method used in some multilateration systems is to employ the Gauss–Newton NLLS method and require a redundant TOA when first establishing surveillance of a vehicle. Thereafter, only the minimum number of TOAs is required. Satellite navigation systems such as GPS are the most prominent examples of 3-D multilateration.
The absolute threshold of hearing (ATH), also known as the absolute hearing threshold or auditory threshold, is the minimum sound level of a pure tone that an average human ear with normal hearing can hear with no other sound present. The absolute threshold relates to the sound that can just be heard by the organism.
A crossed helical gear is a gear that operate on non-intersecting, non-parallel axes. The term crossed helical gears has superseded the term spiral gears. There is theoretically point contact between the teeth at any instant. They have teeth of the same or different helix angles, of the same or opposite hand.
If you're a fan of French tip nails with a twist, these nails are for you. The deep purple tips and purple evil eyes are a lovely touch. 9. ‘Boho’ Evil Eye Nails
Women dominate the major nominations for the 67th Grammy Awards, but that doesn’t mean an absence of testosterone.. Kendrick Lamar and Shaboozey could sneak in a win, but there are bigger ...
Pressure angles. Pressure angle in relation to gear teeth, also known as the angle of obliquity, [1] is the angle between the tooth face and the gear wheel tangent. It is more precisely the angle at a pitch point between the line of pressure (which is normal to the tooth surface) and the plane tangent to the pitch surface.
Quinton Dais, left, and Ny’Sean Isaac line dance at S Bar in Columbia, S.C., on Jan. 30.