ODIN

Mission

The Earthnet Programme: 40 years of evolution and future challenges
ESA's Earthnet Programme provided the initial means to access and exploit Earth Observation data.

blue arrow Overview

ODIN is a multinational atmosphere-studying satellite mission which launched on 20th February 2001 and remains operational.

Mission Parameters
Orbit Height 620 km
Orbit Type Sun-synchronous polar
Orbit Inclination 98.2°

blue arrow Objectives

The ODIN mission objectives are mainly astronomy and aeronomy applications (atmospheric research: observation of stratospheric ozone chemistry, mesospheric ozone science, summer mesospheric science, coupling of atmospheric regions).

blue arrow Instruments

SMR (Submillimeter wave Radiometer)

SMR is a passive microwave limb sounder.

 

SMR Instrument Specifications

Type

Single sideband heterodyne receivers (use of InP material),

Frequencies

118.25 - 119.25 GHz, 486.1 - 503.9 GHz, 541 - 580.4 GHz

Bandwidth

100 MHz to 1 GHz

Resolution

0.1 MHz to 1 MHz

Sensitivity

1 K in 1 MHz with S/N = 5 after 15 minutes

Mixers

Cooled Schottky mixers

Local Oscillators

LO based on Gunn diodes and frequency multipliers

LNA

Cooled HEMT low noise amplifiers

Spectrometers

two hybrid autocorrelators and one AOS (Acousto-Optic Spectrometer)

 

 

OSIRIS (Optical Spectrograph and Infrared Imaging System)

OSIRIS is an ultra violet/visible light/infra red limb sounder. 

 

OSIRIS Instrument Specifications

UV/VIS Spectrograph

Wavelength

280 - 800 nm

Wavelength resolution

1 nm from 300-450 nm, < 2nm from 450-800 nm

Slit orientation

perpendicular to the orbit plane (horizontal)

FOV

0.02º (vertical) x 0.75º (horizontal) corresponding to 1 km x 40 km on Earth

Spatial resolution

1 km at the limb

Pointing direction

aligned with SMR boresight

AD converter

14 bit

Detector type

Si CCD array (1353 x 286 pixels)

Species to be detected

O3, NO2, BrO, OCLO, O2, aerosols

IR Imager

Bandpass filter center wavelengths

1.263 µm, 1.273 µm, 1.520 µm

Bandwidth (FWHM)

10 nm (1.263 and 1.273), 40 nm (1.520)

FOV

118 km (vertical) x 2 km (horizontal)

Spatial resolution

1 km in the vertical direction

Telescope aperture

23 mm diameter

Detector type (linear arrays with hybrid multiplexers)

3 InGaAs, each detector has 128 pixels

Detector pointing direction

in the orbit plane (vertical)

Detector temperature

-40ºC (or less)

Temperature stability during exposure

±0.1ºC

blue arrow Data

blue arrow DATA DOWNLOAD

Download ODIN data through the ODIN OSIRIS FTP. The data is freely available without registration.

blue arrow DATA DESCRIPTION

ESA offer external access through the ODIN OSIRIS FTP server to ODIN (SMR and OSIRIS) validated Level 1 and Level 2 data