Sentences with phrase «polar orbiters»

Now, in 2011, it is probably appropriate to use 1980 as the cut - off, to ensure maximum satellite era coverage and comparisons can be made to polar orbiters more readily.

There were polar orbiters in the 1960's.

The joint program's six orbiters would pack in 14 instruments, roughly twice as many as either military or civilian polar orbiters, and save $ 1.8 billion.

Incorporating this kind of data into the models has been difficult in part because geostationary data provide fewer measurements for any given vertical slice of the atmosphere than do polar orbiters, which circle Earth at lower altitudes.

If NOAA's fails, as roughly one out of every 10 do during or right after launch, U.S. civilian polar orbiter coverage might suffer a gap of four years or more.

«A NOAA polar orbiter is nominally «sun synchronous,» meaning whenever it observes a particular spot on the earth at nadir, the local time on the earth is constant from year to year, usually being referenced to the crossing time over the equator [i.e., local equatorial crossing time (LECT)-RSB-.

Not exact matches

Lautenbacher noted that engineers could bolster the test orbiter — it can already obtain 93 percent of the data that fully functioning satellites can — and could keep existing NOAA polar satellites flying past their average four - year useful life span.

The orbiter's final operational altitude is about 250 miles (400 km) above Mars in a sun - synchronous polar orbit.

Martian north polar cap recession: 2000 Mars Orbiter Camera observations P. B. James and B. A. Cantor Icarus 154, 131 — 144, doi: 10.1006 / icar.2001.6653, November 2001.

The latest image from the Mars Express orbiter, just released by the European Space Agency, was taken on the 19th June, 2017 and shows a rare upside - down, wide - angle view of Mars with its icy northern polar cap at the bottom.

An early summer view of the north polar cap taken on 13th March, 1999 by the Mars Orbiter Camera on board the Mars Global Surveyor.

Climate, weather, and north polar observations from the Mars Reconnaissance Orbiter Mars Color Imager M. C. Malin, W. M. Calvin, B. A. Cantor, R. T. Clancy, R. M. Haberle, P. B. James, P. C. Thomas, M. J. Wolff, J. F. Bell III, and S. W. Lee Icarus 194, 501 — 512, doi: 10.1016 / j.icarus.2007.10.016, April 2008.

The report recommends the 8 - meter monolithic space telescope, Solar Probe 2, Interstellar Probe, solar polar imager, and Neptune Orbiter with probes for further study for the Constellation System.