Data - Data Description
The data collected by Spire has a diverse range of applications, from analysis of global trade patterns and commodity flows to aircraft routing to weather forecasting. The data also provide interesting research opportunities on topics as varied as ocean currents and GNSS-based planetary boundary layer height. The following products can be requested ADS-B Data Stream Global ADS-B satellite data observed by Spire satellite (about 800MB per day, but the volume of data may grow with the number of Spire fleet of satellites). Historical ADS-B data are delivered as a cvs file or via API, live ADS-B data are offered as a live stream through API. Data are distributed as a monthly subscription: historical data can be requested starting from 3 December 2008, the time period for live data starts from a user-defined date and continues for 30 days AIS AIS messages include satellite AIS (S-AIS) as observed by Spire satellites and terrestrial AIS (T-AIS) from third party sensor stations (up to 40 million messages per day). Historical AIS data are delivered as a cvs file with availability back to June 2016 or via Historical API from December 2018; live AIS data are pushed to end user via TCP or through Messages API. Data are distributed as a monthly subscription, from a user-defined date and continues for a 30 day period" GNSS-Radio Occultation GNSS-Radio Occultation measurements are done on a continuous basis, globally, thus allowing the generation of different profiles for each different type of observation. Historical data are available from December 2018 and are distributed via S3 API. Live GNSS-RO profiles (with 90 minutes or less latency from collection to delivery) will be available at a later stage Name Description Data format and content Application Automatic Identification System (AIS) The automatic identification system (AIS) is an automatic tracking system that uses transponders on ships and is used by vessel traffic services. Spire data includes satellite AIS (S-AIS) as observed by Spire satellites and terrestrial AIS (T-AIS) from third party sensor stations. .parquet.gz files The AIS files contain time-series data on received AIS messages, both the raw NMEA message and added post-processing data for each message. Supply chain analysis, commodity trading, identification of illegal fishing or dark targets, ship route and fuel use optimization, analysis of global trade patterns, anti-piracy, autonomous vessel software, ocean currents Automatic Dependent Surveillance-Broadcast (ADS-B) Fleet management, ICAO regulatory compliance, route optimization, predictive maintenance .csv.gz files The decompressed csv file contains a list of hexadecimal representations of ADS-B messages associated with the timestamp they were received on the satellite. Fleet management, ICAO regulatory compliance, route optimization, predictive maintenance Global Navigation Satellite System Radio Occultation (GNSS-RO) Atmospheric radio occultation (RO) relies on the detection of a change in a radio signal as it passes through a planet's atmosphere, i.e. as it is refracted by the atmosphere. Measurements are done on a continuous basis, globally, thus allowing researchers to have a global image of the Earth’s atmospheric properties. This data contains POD Observation, Satellite attitude information, High-Rate Occultation Observation (RO) and Atmospheric Profiles podObs*.rnx This file contains raw pseudorange, carrier phase, Doppler frequency, and signal-to-noise measurements for each observed GPS signal from a single Spire satellite which allow to estimate the positions and velocities of each Spire satellite and also used to derive ionospheric total electron content data. leoOrb*.sp3 This file contains the estimated position, velocity and receiver clock error of a given Spire satellite after processing of the POD observation file leoAtt*.log It contains 1 Hz rate quaternion information measured from a single Spire satellite describing the satellite orientation. opnGns*ro.bin, opnGns*rst.bin these files contain raw measurements from the occulting GNSS satellite (one for each signal frequency) and raw phase data from one or more reference GNSS satellites. atmPrf*.nc The file contains profiles of atmospheric dry pressure, dry temperature and neutral refractivity as a function of altitude produced from full processing of one occultation event. bfrPrf*.bufr The file contains derived profiles of dry pressure, dry temperature, refractivity and bending angle for each occultation. Weather forecasting, turbulence detection, detection and monitoring of volcanic clouds, estimating planetary boundary layer height The products are available as part of the Spire provision with worldwide coverage. All details about the data provision, data access conditions and quota assignment procedure are described in the Spire Terms of Applicability.