TAG: weather forecasting

NASA launches micro satellites with GNSS receivers for remote weather sensing

December 15, 2016By
Once the deployment module on the Orbital ATK Pegasus XL launch vehicle reaches its final altitude of approximately 510 kilometers above the Earth’s surface, the eight CYGNSS microsatellite observatories will be deployed in opposing pairs over a two minute period. (Image credit: University of Michigan)

Surrey Satellite Technology’s Space GNSS Receiver Remote Sensing Instrument (SGR-ReSI) is the primary payload onboard NASA’s CYGNSS constellation, launched today, Dec. 15, from Cape Canaveral Air Force Station in Florida. The Cyclone Global Navigation Satellite System (CYGNSS) mission is part of the NASA Earth System Science Pathfinder Program that aims to improve extreme weather prediction by studying how tropical cyclones... read more

PlanetiQ signs weather satellite launch contract with India’s Antrix

December 3, 2015By
24 hours of data from 12 PlanetiQ satellites = ~34,000 occultations/day.

PlanetiQ has signed a contract with Antrix Corporation Limited, the commercial arm of the Indian Space Research Organization (ISRO), for the launch of PlanetiQ’s first two weather satellites on a Polar Satellite Launch Vehicle (PSLV) during the fourth quarter of 2016. Ten more satellites are planned for launch in 2017 to complete an initial set of 12 satellites that will... read more

PlanetiQ Selects Blue Canyon to Build Weather Satellites

June 25, 2015By

PlanetiQ has selected Blue Canyon Technologies to build its weather satellite constellation, set to launch in 2016 and 2017. PlanetiQ chose BCT as a partner in developing the world’s first commercial constellation dedicated to weather, climate and space weather based on BCT’s development track record and its cutting-edge, low-cost design approach that has delivered hundreds of components and systems for numerous space missions,... read more

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PlanetiQ’s New Pyxis GPS Sensor Tested for Weather Forecasts

June 3, 2015By
PlanetiQ-O

PlanetiQ has started testing its first Pyxis weather instrument with successful processing of GPS signals. The Pyxis represents a new paradigm in satellite weather sensor technology that can penetrate through clouds and storms to produce the highly calibrated data required to dramatically improve weather forecasting, climate monitoring and space weather prediction, all at a much lower cost than traditional satellite... read more

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PlanetiQ Plans GNSS Weather Constellation

February 10, 2015By
planetiq-weather-O

The company PlanetiQ plans to use GNSS to make real-time weather forecasts. PlanetiQ plans to launch a commercial weather satellite constellation by 2017, composed of 12 to 18 small satellites that will capture data as GNSS satellites pass through Earth’s orbital horizon. The satellites will use radio occultation to collect data that will supplement computer models on weather, producing more accurate and timely weather forecasts and assessments,... read more

Innovation: Better Weather Prediction Using GPS

July 1, 2010By
Figure 3. The 21 GPS stations in the project area in the mountainous canton of Valais (see also Figure 2) used during the measurement campaign in July 2005. The stations’ altitudes vary between 527 meters (SION) and 3119 meters (ZER2).

Water Vapor Tomography in the Swiss Alps
A team of Swiss researchers is using data from a network of GPS receivers and the technique of tomography to obtain profiles of how moisture is distributed with height, which might lead to better weather forecasts. read more

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On the Edge: Multipath Measures Snow Depth

November 1, 2009By
FIGURE 2. Snow depth derived from GPS (red squares), the three ultrasonic snow depth sensors (blue lines), and field measurements (black diamonds). Bars on field observations are one standard deviation. GPS snow-depth estimates during the first storm (doy 85.5–86.5) are not shown (gray region) because the SNR data indicate that snow was on top of the antenna.

The September “Innovation” column in this magazine, “It’s Not All Bad: Understanding and Using GNSS Multipath,” by Andria Bilich and Kristine Larson (see www.gpsworld.com/multipath), mentions the use of multipath in studying soil moisture, ocean altimetry and winds, and snow sensing. An experiment the authors conducted, designed to study soil moisture, yielded a surprise bonus: a new methodology for measuring snow depth via GPS multipath. It has important implications for weather and flood forecasting, and could also bring new insight to bear on GPS antenna design. read more