# US 9,519,057 B1 · Dual-polarization weather radar data system and method

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- Number: US 9,519,057 B1
- Document ID: US9519057B1
- Status: Granted
- Kind: B1
- Application number: 14/615,920
- Filed: 2015-02-06
- Granted: 2016-12-13
- Earliest claimed: 2011-01-07
- Assignees: Weather Decision Technologies, Inc.
- Applicants: Weather Decision Technologies, Inc.
- Inventors: Michael Eilts; James T. Johnson, Jr.; Christopher Porter; Matthew Gaffner; John William Conway
- Web page: https://patentgrep.com/patent/US9519057B1

## CPC

- G01S 13/95: for meteorological use
- G01S 7/025: {involving the transmission of linearly polarised waves}
- G01S 7/412: {based on a comparison between measured values and known or stored values}
- G01S 13/89: for mapping or imaging
- G01S 13/951: {ground based}
- G01W 1/00: Meteorology
- G01W 1/14: Rainfall or precipitation gauges (measuring volume in general G01F)
- Y02A 90/10: Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
- G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01W: METEOROLOGY (radar, sonar, lidar or analogous systems, designed for meteorological use G01S13/95, G01S15/88, G01S17/95)
- Y02A: TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE

## Abstract

The present invention essentially comprises a system, method, computer program and combinations thereof to utilize dual-polarization generated data generally associated with weather and non-weather events for mapping data, producing geo-referenced data, producing mosaics, generation of precipitation masks, non-precipitation mask, and classification masks in general, production of vertical cross sections and predetermined fly throughs, producing short term forecasting, prediction of specific weather phenomenon, correcting or adjusting rain gauge data as well as quantitative precipitation estimation, and combining other meteorological data to correct or adjust estimated rainfall accumulation gathered by dual-polarization radar.

## Claims

### Claim 1

A method for generating a precipitation accumulation comprising the steps:
generating a horizontal polarized radio wave pulse and a vertical polarized radio wave pulse;
transmitting said horizontal polarized radio wave pulse and said vertical polarized radio wave pulse toward a precipitation event;
receiving returned said horizontal polarized radio wave pulse and returned said vertical polarized radio wave pulse from said precipitation event;
measuring the power of said returned said horizontal polarized radio wave pulse and said returned said vertical polarized radio wave pulse from said precipitation event;
comparing said power of said returned said horizontal polarized radio wave pulse and said power of said returned said vertical polarized radio wave pulse from said precipitation event;
generating a first precipitation mask from said comparing of said power of said returned said horizontal polarized radio wave pulse and said power of said returned said vertical polarized radio wave pulse from said precipitation event at a first time period;
generating a second precipitation mask from said comparing of said power of said returned said horizontal polarized radio wave pulse and said power of said returned said vertical polarized radio wave pulse from said precipitation event at a second time period;
comparing the difference between said first precipitation mask at said first time period and said second precipitation mask from said second time period; and
generating said precipitation accumulation from said difference between said first precipitation mask at said first time period and said second precipitation mask from said second time period.

### Claim 2 (depends on 1)

The method of claim 1 wherein said precipitation event is rain.

### Claim 3 (depends on 1)

The method of claim 1 wherein said precipitation event is snow.

### Claim 4 (depends on 1)

The method of claim 1 wherein said precipitation event is ice.