What is a subsatellite point?

What is a subsatellite point?

Sub satellite Point is the point at which a line between the satellite and the center of the Earth. intersects the Earth’s surface.

What is active and passive satellite?

Active Satellites: Active Satellites, unlike passive satellites, amplify the transmitted signals before re-transmitting it back to Earth, ensuring excellent signal strength. Passive satellites were the earliest communication satellite but now almost all the new ones are active satellites.

What is the sub satellite point of a satellite system?

The satellite sub-point is that point on the Earth’s surface directly below the satellite. For the case of a spherical Earth, this point is the intersection of the line from the center of the Earth to the satellite and the Earth’s surface, as shown in Figure 3.

What is Perigee position?

: the point in the orbit of an object (such as a satellite) orbiting the earth that is nearest to the center of the earth also : the point nearest a planet or a satellite (such as the moon) reached by an object orbiting it — compare apogee.

What is a passive satellite?

A passive satellite is the one that just reflects the signal from one earth station to other earth station(or stations) without any amplification or retransmission.

What are the 6 orbital elements of an ellipse?

Following are the orbital elements.

• Semi major axis.
• Eccentricity.
• Mean anomaly.
• Argument of perigee.
• Inclination.
• Right ascension of ascending node.

What is the definition of sub satellite point?

Sub satellite Point:  Point at which a line between the satellite and the center of the Earth intersects the Earth’s surface  Location of the point expressed in terms of latitude and longitude  If one is in the US it is common to use

What is the point at which a satellite intersects the Earth?

Point at which a line between the satellite and the center of the Earth intersects the Earth’s surface Location of the point expressed in terms of latitude and longitude If one is in the US it is common to use

How to calculate the altitude of a satellite?

Given the ECI position of the satellite to be [ x, y, z ], the latitude is where θ g is the Greenwich Mean Sidereal Time (GMST). The altitude of the satellite would be where Re is the Earth’s circular radius. As seen in Figure 4, the calculation for an oblate Earth is somewhat more complicated.

Which is the geodetic latitude on an oblate spheroid?

However, on an oblate spheroid, geodetic latitude is the angle between the local zenith direction and the Earth’s equatorial plane. This angle, φ, is the latitude used on maps; the angle formed by the observer’s position, the Earth’s center, and the equatorial plane is more properly referred to as the geocentric latitude, φ’.