The Meteor-3 series was the third generation of soviet meteorological satellites. They were based on the Meteor-2 series.
The regular instrumentation consisted of:
- TV camera systems MR-2000M and MR-900B
- Klimat (Infrared Radiometer)
- SM (Multichannel Spectrometer)
- RMK-2 (Radiation Measurement Complex)
Meteor-3 6 carried additionally a TOMS (Total Ozone Mapping Spectrometer) instrument provided by NASA, similar to the one flown on Nimbus 7.
Meteor-3 7 also carried additional instruments: The ScaRaB (Scanner for Radiation Budget) cross-track scanning radiometer provided by CNES [France), Russia (Planeta, RKA) and Germany (GKSS); PRARE (Precise Range And Range-Rate Equipment), a German Microwave Tracking System); and a laser retro reflector array.
The Meteor-3 series was to be replaced by the improved Meteor-3M series, of which only one satellite was launched.