What is revisit time in remote sensing?

The satellite revisit period is the time elapsed between observations of the same point on Earth by a satellite. It depends on the satellite’s orbit, target location, and swath of the sensor. “Revisit” is related to the same ground trace, a projection of the satellite’s orbit on to the Earth.

What is the revisit rate of a satellite?

A satellite’s revisit rate, or revisit period, is the time elapsed between observations of the same point on Earth by a satellite. Revisit rate depends on a satellite’s orbit, target location, and the swath width of the sensor. Typically large swath satellites can revisit the same location more often.

Is the orbit length the same as revisit period?

The exact length of time of the orbital cycle will vary with each satellite. The interval of time required for the satellite to complete its orbit cycle is not the same as the “revisit period”.

How do you calculate revisit time?

Calculation of the revisit time at a given latitude can be determined by correlating the longitude of all projected passes and the instantaneous coverage of the sensor over a period of analysis. The maximum time gap between any two continuous passes (ordered by time) at any longitude gives the simple MRT.

What is the repeat cycle of a satellite?

Satellite Orbits The satellite traces out a path on the earth surface, called its ground track, as it moves across the sky. As the earth below is rotating, the satellite traces out a different path on the ground in each subsequent cycle. This time interval is called the repeat cycle of the satellite.

Does revisit period change with latitude?

The two-satellite constellation offers a 6 day exact repeat cycle at the equator. Since the orbit track spacing varies with latitude, the revisit rate is significantly greater at higher latitudes than at the equator.

What is a satellite repeat cycle?

What is the time period of revolution of satellite?

The period of revolution of an Earth’s satellite close to the surface of Earth is 90min.

What is the difference between time and time period?

As verbs the difference between time and period is that time is to measure seconds, hours etc passed, especially using a clock of some kind while period is (obsolete|intransitive) to come to a period; to conclude.

What is the difference between time period and frequency?

Frequency and period are distinctly different, yet related, quantities. Frequency refers to how often something happens. Period refers to the time it takes something to happen. Frequency is a rate quantity.

What is the revisit time of a satellite?

Different from the repeat cycle which only depends on the orbit, the revisit time is relevant to the payload of the satellite, such as the tilt angle and swath width of the sensor in addition to the satellite’s orbit and target location. Source: Satellite revisit – Wikipedia.

Is the repeat cycle the same as the revisit period?

The repeat cycle need not be the same as the revisit period for a satellite. Revisit Time – The satellite revisit time is the time elapsed between observations of the same point on earth by a satellite.

What is repeat cycle in orbit?

Repeat Cycle – A satellite generally follows an elliptical path around the Earth. The time taken to complete one revolution of the orbit is called the orbital period.

What is Rt (revisit time)?

Revisit time (RT) of a single satellite is the time elapsed between two successive observations of the same ground point using off-nadir pointing of the payload or the attitude of the satellite . The revisit time is relevant to both of the orbits and the payload of the satellite, such as tilt angle and swath width .