Analysis Of Burst Error Occurrence On Optical Intersatellite Link (ISL) Design

Koepf, G. A.; Peters, Robert A.; Marshalek, Robert G.

doi:10.1117/12.961046

Cited by 13 publications

(3 citation statements)

References 4 publications

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“…The performance of the space optical link is limited due to vibration of the pointing system caused by two stochastic mechanisms: (i) tracking noise created by the electro-optic tracker and (ii) vibrations created by internal satellite mechanical mechanisms. The effect of satellite vibration and platform jitter is described in [198]- [201]. Misalignment due to any of these reasons may result in link failure or severely degrade the performance of the system.…”

Section: Acquisition Tracking and Pointingmentioning

confidence: 99%

Optical Communication in Space: Challenges and Mitigation Techniques

Kaushal

Kaddoum

2017

IEEE Commun. Surv. Tutorials

1,304

721

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Abstract-In recent years, free space optical (FSO) communication has gained significant importance owing to its unique features: large bandwidth, license free spectrum, high data rate, easy and quick deployability, less power and low mass requirements. FSO communication uses optical carrier in the near infrared (IR) band to establish either terrestrial links within the Earth's atmosphere or inter-satellite/deep space links or ground-to-satellite/satellite-to-ground links. It also finds its applications in remote sensing, radio astronomy, military, disaster recovery, last mile access, backhaul for wireless cellular networks and many more. However, despite of great potential of FSO communication, its performance is limited by the adverse effects (viz., absorption, scattering and turbulence) of the atmospheric channel. Out of these three effects, the atmospheric turbulence is a major challenge that may lead to serious degradation in the bit error rate (BER) performance of the system and make the communication link infeasible. This paper presents a comprehensive survey on various challenges faced by FSO communication system for ground-to-satellite/satellite-to-ground and inter-satellite links. It also provide details of various performance mitigation techniques in order to have high link availability and reliability. The first part of the paper will focus on various types of impairments that pose a serious challenge to the performance of optical communication system for ground-to-satellite/satellite-to-ground and inter-satellite links. The latter part of the paper will provide the reader with an exhaustive review of various techniques both at physical layer as well as at the other layers (link, network or transport layer) to combat the adverse effects of the atmosphere. It also uniquely presents a recently developed technique using orbital angular momentum for utilizing the high capacity advantage of optical carrier in case of space-based and near-Earth optical communication links. This survey provides the reader with comprehensive details on the use of space-based optical backhaul links in order to provide high capacity and low cost backhaul solutions.

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Section: Acquisition Tracking and Pointingmentioning

confidence: 99%

Optical Communication in Space: Challenges and Mitigation Techniques

Kaushal

Kaddoum

2017

IEEE Commun. Surv. Tutorials

1,304

721

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“…The acquisition procedure is first tread for formation of FSO link and it includes the transmission scanning with its limited beacon signal over an ambiguity range. In large background radiations, the beam location by the receiver helped with beacon signal which is having adequate peak power and small pulse rate [39]. The once the guide signal is identified, the accepting terminal utilizes beam controlling components to point a relentless guide signal towards the starting terminal frequently balanced by fixed PAA.…”

Section: Acquisition Tracking and Pointing (Atp)mentioning

confidence: 99%

A Review on Inter-Satellite Links Free Space Optical Communication

Chauhan¹

2020

IJST

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Objectives: The need for constricting, lightweight, low-power electronics-aggravated by the thriving demand for large data flow rate and bandwidth is urging the use of optical technologies in defense and space. Free space optical (FSO) communication links have promising eminence over microwave communication links with high speed, low weight, and increased security so that they can be boarded conveniently on the satellite. Methods/findings: The advancement of the optical components and systems has made it very predominant along with its acceptability in space and defense. Yet a couple of significant components to be dealt with are tracking problems with misalignment of the transmitter and receiver apertures and the progressions because of barometrical conditions. Efficiency of the FSO communication system is seriously rotted due to the angle of arrival (AoA) variance and including error pointing. The optical transmitter can be perfectly coordinated with the receiver by utilizing the pointing, acquisition, and tracking (PAT). However, this method is to be carried out under the airborne platform with required restrictions namely size, weight, and power. Application: An overview of promising inter-satellite applications with the challenges have been discussed which sway the performance of the system and make the communication link unattainable. The FSO communication possesses an advantage over two existing technologies optical fiber communication and wireless communication. Hence, the significant use of FSO is intersatellite optical wireless communication (Is OWC) links, which will be deployed in the future in space.

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“…. (I) (cosO,,1 -sinO,,1 0) (3) where 0 is the angular direction of the laser beam, f0 is the resonant frequency of the FPI when 8 is zero, f is the frequency deviation of the laser field from the resonant frequency, is the angular bias of the FPI, p is the index of refraction of the electro-optic cavity of the FPI, L is the length of the cavity of the FPI and c is the speed of light in vacuum.…”

Section: Design Of the Fpi For Simultaneous Spatial And Frequency Tramentioning

confidence: 99%

<title>Simultaneous frequency and spatial tracking using a Fabry-Perot interferometer for free-space laser communications</title>

Fung¹

1994

SPIE Proceedings

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Before a communication link can be established between free-space coherent optical communication terminals, the frequency of the optical signal and spatial direction of the transmitter or receiver must be acquired. During the communication period, the operations of frequency tracking and spatial tracking must be maintained. The frequency of the optical signal will deviate from its nominal value due to Doppler shift and laser frequency instability. The frequency tracking system must be able to track out the frequency variation to maintain the detected signal within the passband of the communication receiver. A coherent detection spatial tracking system based on a Fabry-Perot Interferometer (FPI) had been designed. Electro-optic material was used for the cavity of the FPI. In this paper, a scheme is presented to use the same electro-optic FPI (EO-FPI) to track the frequency of the optical signal. The method is to apply a small sinusoidal modulation voltage to the electro-optical cavity of the FPI. In doing so, the coherently detected signal has the amplitude and phase modulated at the same frequency. The amplitude of the coherently detected signal is used to generate the frequency error signal to minimize the frequency difference between the signal and local oscillator (LO) optical field. While the phase of the coherently detected signal is low-passed filtered to generate the angular error signal. The angular error signal is proportional to the angular difference between the signal and LO beams. The length of the cavity and the angular bias of the EO-FPI is chosen to optimize the frequency and spatial tracking performance of the system.

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Analysis Of Burst Error Occurrence On Optical Intersatellite Link (ISL) Design

Cited by 13 publications

References 4 publications

Optical Communication in Space: Challenges and Mitigation Techniques

Optical Communication in Space: Challenges and Mitigation Techniques

A Review on Inter-Satellite Links Free Space Optical Communication

<title>Simultaneous frequency and spatial tracking using a Fabry-Perot interferometer for free-space laser communications</title>

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