I. What is a Sun-Synchronous Orbit? A Sun-Synchronous Orbit is a type of polar orbit used by satellites and spacecraft that allows them to pass over any given point on Earth at the same local solar time. This means that the satellite will always see the same portion of the Earth illuminated by the sun, regardless of the time of day ...
A satellite orbiting above the equator at that distance keeps its position above the same spot on the ground; hence this is known as the synchronous orbit, from the Greek syn--same, chronos--time.
Sun-synchronous orbit (SSO) is a particular kind of polar orbit, see picture below. Satellites in SSO, travelling over the polar regions, are “synchronous” with the Sun. This means they are synchronised to always be in the same ‘fixed’ position relative to the Sun.
A Sun-synchronous orbit is useful for imaging, reconnaissance, and weather satellites, because every time that the satellite is overhead, the surface illumination angle on the planet underneath it is nearly the same.
This synchronisation between the satellite’s orbital plane and the Sun’s position ensures that the satellite passes over a specific location on Earth at the same local solar time during each orbit. To achieve a sun-synchronous orbit, the satellite’s orbital inclination and altitude are carefully selected.
Polar and Sun Synchronous Orbit (SSO) – image from ESA. Since satellites typically collect reflected light from the earth surface, that originate from the sun, it is important that the conditions are similar during each orbit – we are looking for changes and comparing data from different orbits.
An orbit will be Sun-synchronous when the precession rate ρ = d Ω d t equals the mean motion of the Earth about the Sun nE, which is 360° per sidereal year (1.990 968 71 × 10−7 rad /s), so we must set nE = Δ ΩE TE = ρ = Δ Ω T , where TE is the earth orbital period while T is the period of the spacecraft around the earth.
I. What is a Sun-Synchronous Orbit? A Sun-Synchronous Orbit is a type of polar orbit used by satellites and spacecraft that allows them to pass over any given point on Earth at the same local solar time. This means that the satellite will always see the same portion of the Earth illuminated by the sun, regardless of the time of day ...
Get PriceTraditional Earth observation missions have utilized Sun-synchronous orbits with repeat ground tracks due to advantages in visible and infrared wavelengths. However, diversification of observation wavelengths and miniaturization of satellites, are enabling new kinds of satellite missions that provide big data from swarms and constellations.
Get PriceAbstract: According to detected results of Space Particle Composition Detector on board the FY-1C meteorology satellite, the paper presents radiation environmot and its distribution characteristics in the South Atlatic Anomalous during quiet days without solar proton events and magnetostorms. The effect analysis of solar proton event on July 14, 2000 on solar …
Get PriceSun-synchronous orbit (SSO) is a particular kind of polar orbit. Satellites in SSO, travelling over the polar regions, are synchronous with the Sun. This means they are synchronised to always be in the same ''fixed'' position relative to the Sun.
Get PriceGlobal-scale solar-synchronous tides are derived from Mars Atmosphere and Volatile Evolution Mission/Neutral Gas and Ion Mass Spectrometer measurements of CO 2, Ar, and N 2 at Mars, 150–200 km. The diurnal tide originates mainly in situ; semidiurnal and terdiurnal tides show evidence of upward propagation from below
Get PriceСолнечно-синхронная орбита в плоскости терминатора. Со́лнечно-синхро́нная орби́та (иногда именуемая гелиосинхронной [1]) — геоцентрическая орбита с такими параметрами, что объект, находящийся на ней, проходит над ...
Get PriceThe most common type of a Sun-synchronous orbit is a ground-repeating one. In this case, we have a Sun-synchronous orbit, as mentioned before, whose ground track repeats after a finite …
Get PriceThe most common type of a Sun-synchronous orbit is a ground-repeating one. In this case, we have a Sun-synchronous orbit, as mentioned before, whose ground track repeats after a finite number of (solar) days. The ground-repeating condition happens if the satellite performs a rational number of orbits per solar day: [R_d = I + frac{N}{D},]
Get PriceSun-synchronous orbit (SSO) is a particular kind of polar orbit, see picture below. Satellites in SSO, travelling over the polar regions, are "synchronous" with the Sun. This means they are synchronised to always be in the same ''fixed'' …
Get PriceA sun-synchronous orbit (sometimes incorrectly called a heliosynchronous orbit) is a geocentric orbit which combines altitude and inclination in such a way that an object on that orbit passes over any given point of the Earth''s surface at the same local solar time. The surface illumination angle will be nearly the same every time. This ...
Get PriceSun-synchronous orbit is a specific type of polar orbit in which a satellite''s orbital plane precesses (rotates) around the Earth at the same rate as the Earth orbits around the Sun. This …
Get PriceTraditional Earth observation missions have utilized Sun-synchronous orbits with repeat ground tracks due to advantages in visible and infrared wavelengths. However, diversification of …
Get PriceA satellite orbiting above the equator at that distance keeps its position above the same spot on the ground; hence this is known as the synchronous orbit, from the Greek syn--same, chronos--time. Such an orbit is useful first and foremost for communication satellites, because a ground station linked to the satellite will always be ...
Get Price3.1 Solar-Synchronous ("Migrating") Diurnal and Semidiurnal Tides. Figures 2a– 2d illustrate comparisons between MCS and MCD latitude versus Ls amplitude structures at 76 km for the diurnal and semidiurnal solar …
Get PriceIn this study, Sun-synchronous solar reflectors orbits with inclination equal or less than $90^{circ }$ with respect to the orbital plane of Mars are considered to intervene with the Mars'' climate system. With different inclinations, a family of Sun-synchronous solar reflectors orbits distributes azimuthally the energy intercepted by the reflector. The two-body problem is …
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Get PriceI. What is a Sun-Synchronous Orbit? A Sun-Synchronous Orbit is a type of polar orbit used by satellites and spacecraft that allows them to pass over any given point on Earth …
Get PriceA Sun-synchronous orbit (SSO), also called a heliosynchronous orbit, [1] is a nearly polar orbit around a planet, in which the satellite passes over any given point of the planet''s surface at the same local mean solar time. [2][3] More technically, it is an orbit arranged so that it precesses through one complete revolution each year, so it alwa...
Get PriceAiming at the sun-synchronous orbit transfer task of the micro-nano satellite solar sail, the method of combining the weighted control law and the solar sail optimal direction is used for maneuvering the orbit, and a segmentation control strategy is proposed to control the local time of the descending node of target orbit. The theoretical and ...
Get PriceSun-synchronous orbit (SSO) is a particular kind of polar orbit. Satellites in SSO, travelling over the polar regions, are synchronous with the Sun. This means they are synchronised to always …
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Get PriceA satellite orbiting above the equator at that distance keeps its position above the same spot on the ground; hence this is known as the synchronous orbit, from the Greek …
Get PriceWe exploit a hitherto unexplored mechanism to achieve synchronous modulations of both solar and thermal radiation through a pNIPAm-AgNW mesh composite film. In particular, water molecules are used as a thermal regulator, and its directional transfer through the AgNW mesh is controlled by the thermally induced hydrophobic-hydrophilic transition of …
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Get PriceSun-synchronous orbit is a specific type of polar orbit in which a satellite''s orbital plane precesses (rotates) around the Earth at the same rate as the Earth orbits around the Sun. This synchronisation between the satellite''s orbital plane and the Sun''s position ensures that the satellite passes over a specific location on Earth at the ...
Get PriceSun-synchronous orbit (SSO) is a particular kind of polar orbit, see picture below. Satellites in SSO, travelling over the polar regions, are "synchronous" with the Sun. This means they are synchronised to always be in the same ''fixed'' position relative to the Sun.
Get PriceIn this paper, we present a mathematical model and engineering processing method to address the issue of power output attenuation in solar arrays aboard solar synchronous orbit (SSO) satellites. Given the challenge of accurately quantifying influencing factors, our proposed method comprehensively analyzes key variables, including direct incident solar-light intensity, …
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