Show Component
Component Name:
JASON-2 MI_Platform 8293A06964AF322CE040AC8C5AB453FE
Component Group:
NOAA Master Component Group
Date Created:
2020-12-16 08:38:12.375
Last Updated By:
export_comp_migrate.sql
Last Updated:
2020-12-16 08:38:12.375
UUID:
8293A06964AF322CE040AC8C5AB453FE
XML
<?xml version="1.0" encoding="ISO-8859-1"?><gmi:MI_Platform xmlns:gmi="http://www.isotc211.org/2005/gmi" id="platform_967" uuid="8293A06964AF322CE040AC8C5AB453FE"><gmi:identifier><gmd:MD_Identifier xmlns:gmd="http://www.isotc211.org/2005/gmd"><gmd:code><gco:CharacterString xmlns:gco="http://www.isotc211.org/2005/gco">JASON-2</gco:CharacterString></gmd:code></gmd:MD_Identifier></gmi:identifier><gmi:description><gco:CharacterString xmlns:gco="http://www.isotc211.org/2005/gco">JASON-2 * Instruments: Poseidon-3 Altimeter, Advanced Microwave
Radiometer (AMR), Doppler orbitography and radiopositioning integrated from space
(DORIS), and Global Positioning System Space Receiver (GPSP). * Launched date: June
20, 2008. * Orbit: Altitude: 1336 km, Circular, non-sun-synchronous, 66 degrees
inclination, Global data coverage between 66 degrees N and 66 degrees S latitude,
10-day repeat of ground track (+/- 1 km accuracy), and coverage of 95% of ice-free
oceans every 10 days. *Jason 2 additional orbit parameters: Semi-major axis -
7,714.4278 km, Eccentricity - 0.000095, Reference altitude (equatorial) - 1336 km,
Nodal period - 6 745.72 seconds (112'42" or 1h52'). Repeat cycle - 9.9151 days, Number
of passes per cycle - 254, Ground track separation at Equator - 315 km, Acute angle at
Equator crossings - 39.5 degrees, Longitude at Equator of pass 1 - 99.9242 degrees,
Orbital velocity - 7.2 km/s, Ground scanning velocity - 5.8 km/s. A satellite's orbit
parameters tend to change over time as a result of atmospheric drag. In the long term,
more or less periodic variations also occur due to instabilities in the Earth's
gravity field, solar radiation pressure and other forces of smaller magnitude. Orbit
manoeuvres are performed every 40 to 200 days. Intervals between manoeuvres depend
chiefly on solar flux and each manoeuvre lasts from 20 to 60 minutes. Wherever
possible, they are performed at the end of the orbit cycle, and above solid earth, so
that lost data acquisition time is reduced to a minimum. * Mission Duration: Jason-2
has a designed lifetime of about 5 years. * Jason-2's orbit is identical to that of
Jason-1 (and that of Topex/Poseidon previously). It is optimized to study large-scale
ocean variability and to provide coverage of 90% of the world's oceans over a ten-day
cycle. Jason-2's high altitude (1,336 kilometres) reduces interactions with the
Earth's atmosphere and gravity field to a minimum, thus making orbit determination
easier and more precise. The orbit inclination of 66 degrees North and South enables
the satellite to cover most of the globe's unfrozen oceans. The orbit's repeat cycle
is just under 10 days (9.9156 days to be precise, i.e., 10 days minus two hours) - in
other words, the satellite passes over the same point on the Earth's surface (to
within one kilometre) every ten days. This cycle is a trade-off between spatial and
temporal resolution designed for the study of large-scale ocean variability. The fact
that the orbit is prograde and not sun-synchronous also avoids aliasing of different
tidal components at the same frequency. The orbit is also designed to pass over two
dedicated ground calibration sites: Cap Senetosa in Corsica and the Harvest oil rig
platform in California, USA.</gco:CharacterString></gmi:description></gmi:MI_Platform>