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NPOL: GPM Precipitation Science Research Facility

NASA/GPM Radar Assets


NPOL constitutes a unique and valuable resource for both NASA Earth Sciences and external communities. The new antenna system provides better than 1 deg beam width and electrical performance consistent with the collection of research-quality polarimetric data. In addition to the antenna system upgrade, the radar signal processor has also been upgraded to the SIGMET/Vaisala RVP-900 from its original SIGMET RVP-7 technology. The new processor provides a more robust means to collect and process raw I/Q and moment data in both conventional alternating (full covariance matrix) and simultaneous transmit/receive modes. Importantly, the NPOL radar will function as one of only two deployable, research-grade S-band dual-polarimetric radars in the world. As the centerpiece of a robust Precipitation Science program, NASA should be leading the way in innovative and pioneering uses of such a platform because research grade radars provide the link between what satellites see and precipitation hitting the ground.

Click here to see latest imagery from NPOL.

The table below provides the basic specs of the NPOL radar.

NPOL Radar Characteristics

Frequency 2790-2810 MHz
Pulse Repitition Frequency (PRF) Variable 500 Hz & 1200 Hz
Wavelength 10.65 cm
Beam Width 0.95 deg (Horizontal and Vertical)
Processor Sigmet RVP-9/RCP-8






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