VVP Product Format

The winds produced by the VVP product are stored in an array of vvp_results structures for each height.

If less than 30 range bins are found in the height interval, then the whole structure is zeroed. Therefore any analysis program should check the Number of data points used field. Also if the calculation cannot be performed for some other reason, the standard deviation is set to 32767.

Analysis programs should also check the standard deviations. Data fields which are turned off in the product configuration are set to 0. Therefore the Wind parameters mask in the vvp_psi_struct in the product header must be checked. Only data bins with valid velocities not near 0 are included in the calculation.

To compute the average reflectivity, bins must also have a valid reflectivity. Because of this, it can produce a lower number of valid bins, so the number of valid reflectivity bins is also recorded. Same for RhoHV.