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Remote sensing systems of satellite

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Satellite remote sensing is a technique used to find precise details about the atmosphere and actual objects. The knowledge is typically gathered by image recordings, measurements, and observations, as well as digital illustrations of dynamism patterns derived from non-contact sensor systems. Satellites are usually outfitted with cameras that gaze down at the planet. There are two satellite remote sensing systems, one polar orbiter and one geostationary, that are used to provide critical information to the National Weather Service.
This paper would equate and contrast one polar orbiter and one geostationary orbiter. The comparison in the paper involves the sensor packages aboard each spacecraft, how the two systems work, the information they gather, their use in weather analysis and limitations of the sensors. Additionally, the paper will also discuss the advantages or the disadvantages between polar and geostationary satellite systems.
Geostationary satellite systems
The geostationary system is used to give detailed information which is vital for a clear analysis of data. The satellites circle the earth in orbit, and the speed they move with is almost about that of the speed the earth rotates. The relative speed hence helps them hover in one point on the earth�s surface. There exists another body in the atmosphere known as the geosynchronous which is about 22,300 miles up in the air. The distance it is placed is high such that it can view the whole earth in a disc manner by the use of the satellites.
Since they are in fixed positions, they sometimes provide an alarming atmosphere that brings inclement weather which is accompanied by flash flood and hurricanes (Montmerle et al. 178). The firm also uses the satellite to approximate the quantity of rain during rain in times of thunderstorm and also estimate the intensity of the snowfall and the length it would cover. Satellites are also used to use to detect the presence of ice fields and also the changing movements that occur to ice in the seas (Montmerle et al. 130).
The main advantage of the geostationary satellite is that it can stay in the same place in the sky and hence the dishes can be fixed in them instead of them being tracked. Their shortcoming is that they consume higher amounts of fuel to reach them to space. In the equator, there exist two satellites. These satellites view the whole of the earth with one monitoring the south and the other one doing the same to the North. The main work is done by the imager and the sounder.
Imager refers to a multichannel device whose work is to sense the energy from the solar coming from the radiant heat from the earth. In the other hand, the sounder is used to provide information which is used to know the appearance of the atmosphere and also the situation of the ozone layer (Kustas et al. 200). The satellite users who need to come up with a readout of their own, they receive frail signal of the resolution imagery. The higher resolution power can be got from the GVAR user although it requires expensive equipment for obtaining the data.
Polar orbiting satellite
There are two satellites by the name Television Infrared Observation Satellite. The latter consistently encircles the planet earth from north to south. The two satellites are synchro onymous to the sun. The satellite orbit allows the satellites to acquire data and also help the NOAA control the satellite and hence disseminate data to the CDA centers which are situated in Alaska and Virginia (Cao et al. 103). The satellites are capable of ensuring that the data acquired is less than six hours old. The satellites are capable of operating and supervising the whole world with the data they collect. The orbiters use the sensors to acquire information and also check on the ozone (Kustas et al. 120).
They are used to send vital information to people in stations for the NOAA computers, and hence this makes it possible for the people who are in the remote areas can easily get information with ease (Cao et al. 150). The polar-orbiting satellite has an orbit relatively which is lower than the earth and hence gives a high power for resolving data and also its manipulation. However, the orbits can�t give out a continuous view of a particular region (Cao et al. 79).


Kustas, W. P., et al. "Mapping daily evapotranspiration at field to continental scales using geostationary and polar orbiting satellite imagery." Hydrology and Earth System Sciences 15.1 (2011): 223.
Montmerle, Thibaut, Florence Rabier, and Claude Fischer. "Relative impact of polar‐orbiting and geostationary satellite radiances in the Aladin/France numerical weather prediction system." Quarterly Journal of the Royal Meteorological Society 133.624 (2012): 655-671.
Cao, Changyong, Michael Weinreb, and Hui Xu. "Predicting simultaneous nadir overpasses among polar-orbiting meteorological satellites for the intersatellite calibration of radiometers." Journal of Atmospheric and Oceanic Technology 21.4 (2012): 537-542.

October 20, 2021

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