PROBA-1 INSTRUMENTS

Explore instruments used in PROBA-1 mission.

EXPLORE INSTRUMENTS

PROBA-1 DATA

Discover how to access PROBA-1 data

ACCESS MISSION DATA

PROBA-1 TOOLS

A number of tools are available for visualising, processing and analysing PROBA-1 data.

DOWNLOAD TOOLS

PROBA-1 is a technology demonstration satellite that later became an operational Earth observation mission.

About PROBA-1

Proba-1

The Project for On-Board Autonomy-1 (PROBA-1) was originally a technology demonstration mission of the European Space Agency, started in mid-1998 and funded within the frame of ESA's General Support Technology Programme.

Intended as a one-year mission, this small satellites - less than 1 cubic metre in size - has provided data since its launch on 22 October 2001 and is still operational today.

 

Orbit LEO Sun-synchronous
Orbital parameters 681x561 km
Swath Width 14km
Orbit Height 615km
Orbital plane inclination 97.9 degrees
Orbital period 96.97 minutes
Repeat cycle Approx. 7 days

 

PROBA-1 rolls in its orbit to take images: the satellite’s platform and payload work as one: spinning reaction wheels guided by a star tracker roll it up to 25º side to side and ±55º/±36º along its path. This helps PROBA-1 to compensate for its 7.5 km/s speed, like a photographer panning to snap a moving target. So each target can be seen on up to 5 different angles (-55º, -36º, nadir view, +36º and +55º).

PROBA-1

PROBA-1 Objectives

The objectives of PROBA-1 are:

  • in-orbit demonstration and evaluation of new hardware and software spacecraft technologies
  • in-orbit demonstration and evaluation of onboard operational autonomy
  • in-orbit trial and demonstration of Earth observation and space environment instruments

PROBA-1 Instruments

CHRIS
The Compact High Resolution Imaging Spectrometer (CHRIS) is the prime PROBA-1 instrument, used to explore the capabilities of imaging spectrometers on agile small satellite platforms.
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HRC
The High Resolution Camera (HRC) is a black and white camera with a miniaturised telescope, studying Earth, it also returns data on its own immediate environment.

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