What do you understand by ground tracking?
Ground track. A ground track or ground trace is the path on the surface of a planet directly below an aircraft or satellite. In the case of a satellite, it is the projection of the satellite’s orbit onto the surface of the Earth (or whatever body the satellite is orbiting).
How does inclination affect ground track?
Effect of inclination In other words, the greater the inclination of a satellite’s orbit, the further north and south its ground track will pass. A satellite with an inclination of exactly 90° is said to be in a polar orbit, meaning it passes over the Earth’s north and south poles.
What is the J2 effect?
The term J2 comes from an infinite series mathematical equation that describes the perturbational effects of oblation on the gravity of a planet.
What is called track?
A track is one of the songs or pieces of music on a recording. All 10 tracks on the album are love songs. 5. plural noun. Tracks are marks left in the ground by the feet of animals or people.
Which is an example of track?
An example of a track is a railroad track that a train runs along. An example of a track is a paved area meant for runners to run on. A mark left by something that has passed along; as, the track, or wake, of a ship; the track of a meteor; the track of a sled or a wheel.
What is inclination in orbit?
Orbital inclination measures the tilt of an object’s orbit around a celestial body. It is expressed as the angle between a reference plane and the orbital plane or axis of direction of the orbiting object.
How do you define an orbital plane?
An orbital plane is the flat, disk-shaped space that connects the center of the object being orbited with the center of the orbiting objects.
What is meant by argument of perigee?
The argument of perigee is the angle between the ascending node and the periapsis point of the orbit.
What is J2 constant?
C(2,0) (also known as ‘J2’, but they differ by a constant factor: J2 = -C(2,0)*sqrt(5)) is only a function of the difference between equatorial and polar radii of the equipotential surface of the Earth’s gravity field that best fits mean sea level; more accurately, J2 is a function of the difference in principal …
What is J2 gravity?
J2 is a coefficient reflecting the gravitational effect of a body’s (planet’s or moon’s) oblateness (extra width making it flatter than a perfect sphere), generally due to the body’s rotation. J2 is of interest for space flight navigation and is measured by observing the flight of spacecraft near a mass.
What is the use of track?
A track is a piece of ground, often oval-shaped, that is used for races involving athletes, cars, bicycles, horses, or dogs called greyhounds. The two men turned to watch the horses going round the track. the athletics track.
What is track define?
transitive verb. 1a : to follow the tracks or traces of : trail. b : to search for by following evidence until found track down the source. 2a : to follow by vestiges : trace. b : to observe or plot the moving path of (something, such as a spacecraft or missile) often instrumentally.
What is inclination angle?
Definitions of angle of inclination. (geometry) the angle formed by the x-axis and a given line (measured counterclockwise from the positive half of the x-axis) synonyms: inclination.
What is angle of inclination of Earth?
The earth’s axis of rotation is tilted 66.5 degrees with respect to its orbital plane around the sun and its axis of rotation is inclined 23.5 degrees from the perpendicular, with respect to this plane. The tilt of the earth affects the angle between the sun beam and the normal over a surface.
What is the angle of orbital plane?
What is orbital plane and equatorial plane?
Equational plane is the plane of the equator. Orbital plane is the plane in which the earth revolves around the sun.
What is the difference between perigee and apogee?
The point in the moon’s orbit where it is farthest from the earth is called apogee, while it’s closest approach is known as perigee.
What is Apside line?
A line drawn through the point of the planet’s closest approach to the Sun (perihelion) and farthest retreat (aphelion) passes through the Sun and is called the line of apsides or major axis of the orbit; one-half this line’s length is the semimajor axis, equivalent to the planet’s mean distance from the Sun.
What are gravity harmonics?
Spherical harmonics are the natural parameters for the Earth’s gravity field as sensed by orbiting satellites, but problems of resolution arise because the spectrum of effects is narrow and unique to each orbit.