Position Velocity Time
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Time of arrival — (ToA), also named Time of Flight (ToF), which both means the travel time of a radio signal from a single transmitter to a remote single receiver. By the relation between light speed in vacuum and the carrier frequency of a signal the time is a… … Wikipedia
Time dilation — This article is about a concept in physics. For the concept in sociology, see time displacement. In the theory of relativity, time dilation is an observed difference of elapsed time between two events as measured by observers either moving… … Wikipedia
Time to first fix — Concerning a Global Positioning System (GPS) receiver, Time To First Fix (TTFF) is a specification detailing the time required for a GPS receiver to acquire satellite signals and navigation data, and calculate a position solution (called a… … Wikipedia
velocity — [və läs′ə tē] n. pl. velocities [Fr vélocité < L velocitas < velox: see VELOCIPEDE] 1. quickness or rapidity of motion or action; swiftness; speed 2. a) rate of change of position, in relation to time; SPEED (sense 2a) b) … English World dictionary
Velocity — In physics, velocity is defined as the rate of change of position. It is a vector physical quantity; both speed and direction are required to define it. In the SI (metric) system, it is measured in meters per second: (m/s) or ms 1. The scalar… … Wikipedia
Time derivative — A time derivative is a derivative of a function with respect to time, usually interpreted as the rate of change of the value of the function. The variable denoting time is usually written as t,.NotationA variety of notations are used to denote… … Wikipedia
Time in physics — In physics, the treatment of time is a central issue. It has been treated as a question of geometry. One can measure time and treat it as a geometrical dimension, such as length, and perform mathematical operations on it. It is a scalar quantity… … Wikipedia
Velocity obstacle — The velocity obstacle VOAB for a robot A, with position xA, induced by another robot B, with position xB and velocity vB. In robotics and motion planning, a velocity obstacle, commonly abbreviated VO, is the set of all velocities of a robot … Wikipedia
Time — This article is about the measurement. For the magazine, see Time (magazine). For other uses, see Time (disambiguation). The flow of sand in an hourglass can be used to keep track of elapsed time. It also concretely represents the present as… … Wikipedia
position vector — ▪ mechanics straight line having one end fixed to a body and the other end attached to a moving point and used to describe the position of the point relative to the body. As the point moves, the position vector will change in length or in… … Universalium
velocity — /veuh los i tee/, n., pl. velocities. 1. rapidity of motion or operation; swiftness; speed: a high wind velocity. 2. Mech. the time rate of change of position of a body in a specified direction. 3. the rate of speed with which something happens;… … Universalium
