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CSDA Vendor - Spire

NASA's Commercial Satellite Data Acquisition (CSDA) program has acquired commercial datasets from Spire for scientific purposes.

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Spire Global Subsidiary, Inc., (Spire) designs, builds, and operates a growing constellation of over 100 3U Low Earth Multi-Use Receiver (LEMUR) small satellites designed to collect radio frequency (RF) signals from Low Earth Orbit (LEO). The company offers a suite of commercial RF sensing products, including a catalog of atmosphere, ionosphere, and weather data services derived from collections of Global Navigation Satellite System (GNSS) signals.

Spire LEMUR satellites are equipped with the STRATOS payload, which collects GNSS signals from which Spire can derive a range of Earth observation data for climate and space weather research, among other applications.

Authorized Data Use and Users

All members of the U.S. Government and researchers funded by the U.S. Government have access to Spire data for scientific use. All data requests must be approved by CSDA. Access to Spire data is governed by the USG End User License Agreement.

Obtaining Data

Copyright

Data products and derivatives must contain the following copyright markings (where YYYY is the year of the image acquisition):

  • For data products: “© Spire Global, Inc. YYYY. All rights reserved.”
  • For derivatives: “Includes copyrighted material of Spire Global, Inc. All rights reserved.”
  • A joint copyright notice may be used as appropriate

Authorized users should send Spire a courtesy copy of any publications that include Spire data.

CSDA Acknowledgment

To help CSDA identify your publications, we request that you include the following acknowledgment when publishing work created using these data:

"This work utilized data made available through the NASA Commercial Satellite Data Acquisition (CSDA) Program."

Research Using Spire Data

Spire CSDA Publications in Zotero

Spire Commercial Data

Spire LEMUR Constellation and Instrument Characteristics

ParameterValue
Design life3 years
Built bySpire
Volume100 x 100 x 340.5 mm (3U) 100 x 226.3 x 340.5 mm (6U)
Total MassUp to 6kg (3U) or 12kg (6U)
ADCS3-axis stabilized, agile and precise
Orbit Average Power Usage8–12 Watts, 35 Watts Peak
TransmittersUHF: 400–450 MHz, 9600 baud S-band: 2.20GHz, 1Mbit X-band: 8.2GHz, 40Mbit
ReceiversUHF: 400–450 MHz, 9600 baud S-Band: 2.032GHz, 1Mbit
Orbit Inclination
Payloads
  • Automatic Identification System (AIS) receiver
  • STRATOS GNSS radio occultation (RO) & precise orbit determination (POD)POD antenna: zenith, L1/L2 RHCP
  • High-gain RO antennas: fore/aft, L1/L2 RHCP
  • Automatic Dependent Surveillance-Broadcast (ADS-B)
Observables
  • GNSS Radio Occultation (L0–L2 atmos. prf)
  • Grazing Angle GNSS-R (L0–L2 sea ice type & altimetry)
  • Conventional GNSS-R (L0–L2 soil moisture, ocean winds & MSS) (under evaluation)
  • Raw IF captures (GNSS-R)
  • Precise Orbit Determination (L0–L1)
  • Space Weather (TEC, EDP, Scintillation) (L0–L2)
  • Magnetometer (simple sensor data) (L0)

Spire GNSS Earth Observation Satellites

3U form factor
  • Moderate gain, dual antennas (rising/setting RO)
  • Multi-GNSS signals tracked
  • Rapid on-orbit innovation
3U form factor
  • Dual nadir antennas
  • Multi-GNSS signals tracked
  • 30 simultaneous reflections
  • First launched December 2019
3U form factor
  • Triple GNSS-R antennas
  • Multi-GNSS signals tracked
  • 45 simultaneous reflections
  • Advanced calibration
  • First launched January 2021

Additional Information