An introduction to testing techniques in the intelsat TDMA/DSI system

Colby, R. J.; Parthasarathy, R.; Prouse, D. W.

doi:10.1002/sat.4600010105

Cited by 8 publications

(1 citation statement)

References 1 publication

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“…Higher rain rate is associated with higher signal attenuation, therefore defines the level of attenuation and link margin. Underestimation of rain rate will affect the link availability while over estimation attract higher cost [13]. The instances of rain height leading to higher losses along the slant path of satellite link due to climate change, the random variations in rain height and the annual variability in the overall rain profile will somehow undermine the prediction parameters [14].…”

Section: Introductionmentioning

confidence: 99%

Rain attenuation in broadband satellite service and worst month analysis

Abubakar

Din

Lam

et al. 2019

IJEECS

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<span>Satellite link design, link margin and services at lower bands of satellite spectrum has been facing the challenges of meeting the demands for higher bandwidth requirements. Satellite operators and service providers are been compelled to migrate to the use of higher frequencies above 10 GHz. These higher frequencies were discovered to be vulnerable to atmospheric degradation creating the challenge of service availability especially for tropical rain zones with higher rainfall intensities and longer rain event durations. This study strive to evaluate the profile of rainfall and the monthly and annual variability to improve the design parameters of satellite propagation. Two yeas rainfall measurement campaign was conducted in Abuja at Nigcomsat-1R ground station with a view to understanding the characteristics of Abuja rain. The location of the site is on lat. 9.06o N and lon. 7.48o E. Tipping bucket rain gauge was used for point rain rate and 1.8 m VSAT antenna was installed to monitor the rain induced attenuation on satellite broadband signal. The results shows a huge variability between month to month as well as annual average between 2016 and 2017. The performance of broadband satellite service was found to largely to depend on the quality of the carrier power above the system noise rather than bandwidth capacity or the receive signal level while higher attenuations are associated with higher rain intensities and the slant path effects.</span>

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Section: Introductionmentioning

confidence: 99%

Rain attenuation in broadband satellite service and worst month analysis

Abubakar

Din

Lam

et al. 2019

IJEECS

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An introduction to testing techniques in the intelsat tdma/dsi system part 2: satellite system operations guide (ssog) tests

Colby¹,

Parthasarathy²,

Stimson³

1983

Int. J. Satell. Commun.

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This paper is the second of a four-part series addressing the testing and alignment techniques to be used in the INTELSAT TDMA/DSI system. In the first part,' the salient characteristics of the overall TDMA/DSI system were presented, together with a discussion of the fundamental requirements for testing and alignment. In this second part, INTELSAT's satellite system operations guide (SSOG) for TDMA is introduced and the principles of testing embodied in the SSOG tests are discussed. In particular, the impact of the unique TDMA access discipline on testing is examined. The third part will address the design of the specialized test equipment required. The fourth part will complete the series with a report on the operational experience gained in the initial stages of the TDMA implementation within the INTELSAT system.

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An introduction to testing techniques in the intelsat TDMA/DSI system. Part 3: Specialized test equipment for ssog tests

Colby¹,

Parthasarathy²,

Prouse

1984

Int. J. Satell. Commun.

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This is the third paper in a four-part series addressing the testing and alignment techniques to be used in the INTELSAT TDMA/DSI system. In the first part,' the salient characteristics of the overall TDMA/DSI system were presented together with a discussion of the fundamental requirements for testing and alignment. In the second part,2 INTEiLSAT's satellite system operations guide (SSOG) for TDMA was introduced, the principles of SSOG testing were discussed and the need for several types of specialized test equipment identified. This third part reviews the features of TDMA which affect test equipment design and gives a detailed description of the three items of specialized test equipment which are essential requirements for the conduct of system tests and line-up of individual links. The fourth part will complete the series with a report on operational experience gained in the initial stages of TDMA implementation within the INTELSAT system.

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An introduction to testing techniques in the intelsat TDMA/DSI system

Cited by 8 publications

References 1 publication

Rain attenuation in broadband satellite service and worst month analysis

Rain attenuation in broadband satellite service and worst month analysis

An introduction to testing techniques in the intelsat tdma/dsi system part 2: satellite system operations guide (ssog) tests

An introduction to testing techniques in the intelsat TDMA/DSI system. Part 3: Specialized test equipment for ssog tests

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