TABLE OF CONTENTS | a,b | constants used to specify Z R relationship | |
| c | speed of light | |
| d | diameter (of hailstones); distance from sensor; thickness of sheared layer | |
| d max | maximum distance of radar for observing weather at a minimum height h min | |
| e | base of natural logarithm | |
| e max | highest elevation angle of the radar antenna during the scan cycle | |
| f c | carrier frequency | |
| f d | Doppler frequency | |
| f dm | mean Doppler frequency (of an ensemble of scatterers) | |
| f r | pulse repetition frequency | |
| f N | Nyquist frequency | |
| f 4( ?, ?) | normalised two-way power pattern of antenna | |
| g | acceleration due to gravity | |
| h | height (clearance) of radar beam above ground (for straight-line propagation) | |
| h ? | height (clearance) of radar beam above ground (considering atmospheric refraction) | |
| h min | minimum height of observation of weather phenomena | |
| j | | |
| k | R ?/R (~4/3) | |
| k m | sample number (in frequency domain) corresponding to the mean Doppler frequency | |
| l c | reference length (length of wing chord at designated cross-section) | |
| m | refractive index of water | |
| n | refractive index of air | |
| n r | total number of resolution volumes or pixels in a full circle of scan | |
| r | range (distance) to a given resolution volume | |
| r | position vector | |
| r aa | radius of airport area | |
| r b | maximum radius of blind zone | |
| r m | maximum range (e.g. of radar) | |
| r max( |
