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L

Layer Mean Reflectivity


The layer mean reflectivity is a 2D-map showing the mean reflectivity in a user-defined layer between two CAPPI surfaces.



Layer turbulence

Description


2D map containing the mean spectral width between set upper and lower limits in altitude in the vertical column over each surface point (ground view) LTB is calculated using a polar volume data set with spectral width as input.

Parameters

Range: diplayed range
Image size
Pixel resolution
Top: Height above MSL of upper data layer
Bottom: Height above MSL of lower data layer

Notes

LTB can be used to observe turbulence on flight levels. The radar scan should be optimized for this purpose, low antenna rotation speed to get a good enough data set of W.

Linear depolarisation ratio

Description


The linear depolarization ratio LDR is the ratio of the vertically polarized reflectivity to the horizontally polarized reflectivity for a horizontally polarized transmitter pulse, in other words: the ratio of the cross-polarized reflectivity to the co-polarized reflectivity.

Notes

• Measurement needs usually different radar measurement mode.

Linear Polarization

The polarization of a wave radiated by an electric field vector that does not rotate but alternates so as to describe a line. Normally, the vector is orientated either horizontally or vertically with respect to the earth.