Radar Meteorology Glossary
This glossary will be the main reference for radar products and problems and will give details on what the different products are and how they are used.
Browse the glossary using this index
Special | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | ALL
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OvershootingFailure to detect a target because the radar beam is too high. | |
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PhaseA particular stage or point of advancement in a cycle; the fractional part of the period through which time has advance, measured from some arbitrary origin. | |
Phase ShiftThe angular difference if two periodic functions have the same angular velocity. | |
Plan position indicatorDescriptionDisplay on which radar signals are shown in plan position with range and azimuth angle displayed in polar coordinates, forming a map-like display.The PPI is a 2D-map projection of a conical surface at predefined elevation containing either reflectivity, precipitation intensity, the radial component of wind velocity or one of the dual polarization parameters. A Polar volume consists of many PPIs. A set of PPIs for various elevations may be given inside of the same product, but they all must contain the same product data quantity. Notes• PPI of velocity can be used as input for dual Doppler products• For dual pol parameters other optional parameters... | ||
Polarimetric correlation coefficientDescriptionThe Polarimetric Correlation Coefficient ρhv provides the complex correlation between the horizontally and the vertically polarized signals. Notes• The ρhv data is a useful indicator describing the regularity or irregularity, shape and canting angles of hydrometeors. | ||
PolarizationThe direction of the electric vector in a field of electromagnetic energy. | |
PropagationMotion of electromagnetic energy as waves through or along a medium. | |
PulseA single short duration transmission of electromagnetic energy. | |
Pulse DurationLinear distance in range occupied by a burst of transmitted radio energy. This may also be expressed in units of time. Also called pulse length or pulse width. | |