Radio noise source
Encyclopedia
A radio noise source is a device that emits radio wave
s at a certain frequency
, used to calibrate radio telescope
s such that received data may be compared to a known value, as well as to find the focal point
of a telescope soon after construction, so that the wave guide and front end
may be properly located.
Radio Wave
Radio Wave may refer to:*Radio frequency*Radio Wave 96.5, a radio station in Blackpool, UK...
s at a certain frequency
Frequency
Frequency is the number of occurrences of a repeating event per unit time. It is also referred to as temporal frequency.The period is the duration of one cycle in a repeating event, so the period is the reciprocal of the frequency...
, used to calibrate radio telescope
Radio telescope
A radio telescope is a form of directional radio antenna used in radio astronomy. The same types of antennas are also used in tracking and collecting data from satellites and space probes...
s such that received data may be compared to a known value, as well as to find the focal point
Focus (optics)
In geometrical optics, a focus, also called an image point, is the point where light rays originating from a point on the object converge. Although the focus is conceptually a point, physically the focus has a spatial extent, called the blur circle. This non-ideal focusing may be caused by...
of a telescope soon after construction, so that the wave guide and front end
RF front end
In a radio receiver circuit, the RF front end is a generic term for all the circuitry between the antenna and the first intermediate frequency stage. It consists of all the components in the receiver that process the signal at the original incoming radio frequency , before it is converted to a...
may be properly located.