The Look Angle is an important concept in satellite communications, which is the angle of the line of sight between an antenna on the ground and a satellite in the sky. It is a key factor in the design and operation of satellite networks, as the line of sight between the ground station and the satellite is necessary for the successful transmission and reception of signals. This article will discuss the concept of the Look Angle, its calculation, and its importance in the field of satellite communications.
The Look Angle is a two-dimensional angle, which is measured from the horizon upwards, and can be measured in degrees or radians. It is calculated by combining the elevation angle, which is the angle between the horizon and the ground station, and the azimuth angle, which is the angle between the ground station and the satellite. Depending on the coordinates of the ground station and the satellite, the Look Angle can range from 0° (directly overhead) to 90° (directly in front of the ground station).
The Look Angle is important in the design and operation of satellite networks, as it is a critical factor in the successful transmission and reception of signals. It affects the size of the antenna, the power of the signal, and the quality of the link between the ground station and the satellite. Furthermore, the Look Angle can be used to optimize the position of the ground station in relation to the satellite, and to avoid interference from other satellites in the same orbit.
In conclusion, the Look Angle is a critical concept in the field of satellite communications, as it is necessary for the successful transmission and reception of signals. It is calculated by combining the elevation angle and the azimuth angle, and its value affects the size of the antenna, the power of the signal, and the quality of the link between the ground station and the satellite.
References
Cheng, C., & Chen, Y. (2017). Satellite Communications. Wiley.
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Goubran, R. (2015). Satellite Communications. Elsevier.