PRISM-19 (PPMR)
Polarimetric P-Band Multibeam Radiometer
Project Overview
The PPMR
measures brightness temperature at H and V polarisations (see
Figure 2-4). It has a frequency band of 742-752MHz and is composed
of a 4x4 array of dual polarized microstrip patches, with
incidence angles of ±15˚ and ±45˚. The nominal beam width is 30˚.
As for PLMR calibrations was performed before, during and after
each flight. The before and after flight calibration is achieved
by removing PPMR from the aircraft and making brightness
temperature measurements of a calibration target and the sky. The
in-flight calibration is accomplished by measuring the brightness
temperature of a water body (Lake Wyangan).
