Optical Inter-Satellite Link over Low Earth Orbit: Enhanced Performance

Abstract Space communication systems are traditionally operated with microwave in satellite-to-satellite links. Now, more efficient and reliable operation is required, which lead to use optical links for Inter Satellite Links (ISLs). This paper investigates the system performance of an optical ISL proposed between satellites over Low Earth Orbit (LEO). In this study, the proposed link is simulated to obtain a maximum bit rate and minimum bit error rate (BER) over different links distances. The system performance is improved by investigating its dependency on the photo detector type, operating wavelength, transmitted optical power, RZ and NRZ schemes. Our work results that best Q- factor are approximately 40 leading to a minimum BER for the LEO orbit, at 600 km when utilizing an APD. While at our investigation of the system performance at visible light bands, it is found that Q-factor will be approximately 60 achieving minimum BER with neglecting the eye-safety precautions in addition to the ability to transmit 2 Gbps at 10−9 BER within many bands.

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Wavelength division multiplexing techniques based on multi transceiver in low earth orbit intersatellite systems

Journal of Optical Communications ◽

10.1515/joc-2019-0171 ◽

2020 ◽

Vol 0 (0) ◽

Author(s):

Aadel M. Alatwi ◽

Ahmed Nabih Zaki Rashed ◽

Eman Mohsen El-Gammal

Keyword(s):

Wavelength Division Multiplexing ◽

System Performance ◽

Propagation Distance ◽

Low Earth Orbit ◽

Earth Orbit ◽

Performance Parameters ◽

Wavelength Division ◽

Signal Peak ◽

Noise Ratio ◽

Quality Factor Q

AbstractSystem performance, which depends on the data transmission rates and propagation distances between two satellites in low Earth orbit (LEO) based on wavelength division multiplexing (WDM) techniques, is thoroughly studied. This study demonstrates the effect of WDM techniques on multi transceiver inter-satellite wireless optical communications. The system performance parameters with propagation distance at a multiple transceiver system are discussed using two previous models. The system performance parameters are investigated with 250 Gb/s transmission bit rates and 5000 km propagation distances for 16 transceiver systems. The maximum quality factor (Q factor), light peak signal per noise ratio, and signal peak per noise ratio are the primary important performance parameters in this study.

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The method of determining the speed of a spacecraft in a Low Earth Orbit personal satellite communication systems

2017 International Siberian Conference on Control and Communications (SIBCON) ◽

10.1109/sibcon.2017.7998440 ◽

2017 ◽

Author(s):

Sergey Panko ◽

Maxim Tsimbal

Keyword(s):

Communication Systems ◽

Satellite Communication ◽

Low Earth Orbit ◽

Earth Orbit

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Link Budget Analysis for Reconfigurable Smart Surfaces in Aerial Platforms

10.36227/techrxiv.12885044 ◽

2020 ◽

Author(s):

SAFWAN ALFATTANI ◽

Wael Jaafar ◽

Yassine Hmamouche ◽

Halim Yanikomeroglu ◽

Abbas Yongacoglu

Keyword(s):

Communication Systems ◽

Low Earth Orbit ◽

Earth Orbit ◽

Budget Analysis ◽

Smart Surfaces ◽

Aerial Vehicle ◽

Link Budget ◽

Aerial Platforms ◽

High Altitude Platform Station ◽

Aerial Platform

In this paper, we derive the link budget relations for communications assisted by reconfigurable smart surfaces (RSS). Specifically, under specular and scattering paradigms, we provide link budget expressions for an RSS-assisted communication on the ground, where the RSS is either mounted on a building, or on an aerial platform, such as an unmanned aerial vehicle (UAV), a high altitude platform station (HAPS), or a low-earth orbit satellite (LEO). The obtained numerical results provide design guidelines for RSS-assisted communication systems, including the recommended aerial platform to use, the size of RSS for each type of the platforms, and the operating frequencies.

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