Lemur-2 120-123

Launch data: Designation  20068 (see table) Launch date  28 Sep 2020 - UTC Launch site  Plesetsk, LC-43/4 Launch vehicle  Soyuz-2-1b Fregat Mission  AIS/ADS-B, Meteorology

Spacecraft data:

Description:

• SpireGlobal Lemur-2 satellites with ship tracking and GNSS-RO meteorology payloads.
• Lemur-2 is the initial constellation of low-Earth orbiting satellites built by Spire.
• The Lemur-2 satellites carry two payloads: STRATOS GPS radio occultation payload and the SENSE AIS payload.
• The SENSE payload enables tracking ships worldwide by receiving their AIS signals. Spire satellites, which orbit close to Earth′s atmosphere, listen for GPS satellite signals - which are impacted as they pass through Earth′s atmosphere. Using a process called GPS radio occultation, Spire measures the change in GPS signal readings to calculate very precise profiles for temperature, pressure, and humidity here on Earth.

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