A satellite orbit that passes over polar regions, especially one whose plane contains the polar axis.
（人造卫星的）两极轨道
an amateur radio satellite in a polar orbit
mass nounthe agency maintains four satellites, two in polar orbit
Example sentencesExamples
When declared operational in 1964, Transit consisted of five satellites in offset polar orbits circling the Earth at an altitude of about 670 miles.
He said the experimental satellite will weigh 35 kg and will be placed in a polar orbit, orbiting the earth from pole to pole, at an altitude of 600 to 800 km.
Depending on your stretch of that definition, a satellite in a perfect polar orbit would pass over each pole once per day and might be called ‘geosynchronous’, but like the time of day at the poles the terminology becomes ambiguous.
Only about 2% of the time is that satellite ever over something even remotely interesting - it's a very, very low yield - and you only come over that spot with a satellite once a day if it's in a polar orbit.
By 2001 those satellites (flying in polar orbits and geosynchronous orbits) were equipped not only with cameras but with a range of sensors that employed the latest infrared technology.
Definition of polar orbit in US English:
polar orbit
noun
A satellite orbit that passes over polar regions, especially one whose plane contains the polar axis.
（人造卫星的）两极轨道
an amateur radio satellite in a polar orbit
mass nounthe agency maintains four satellites, two in polar orbit
Example sentencesExamples
By 2001 those satellites (flying in polar orbits and geosynchronous orbits) were equipped not only with cameras but with a range of sensors that employed the latest infrared technology.
Depending on your stretch of that definition, a satellite in a perfect polar orbit would pass over each pole once per day and might be called ‘geosynchronous’, but like the time of day at the poles the terminology becomes ambiguous.
Only about 2% of the time is that satellite ever over something even remotely interesting - it's a very, very low yield - and you only come over that spot with a satellite once a day if it's in a polar orbit.
He said the experimental satellite will weigh 35 kg and will be placed in a polar orbit, orbiting the earth from pole to pole, at an altitude of 600 to 800 km.
When declared operational in 1964, Transit consisted of five satellites in offset polar orbits circling the Earth at an altitude of about 670 miles.