Probabilistic-relationships in the DVB-T2 mobile-reception signal received from a fix-reception mode broadcasting service

2016 ◽  
Author(s):  
Budi Setiyanto ◽  
Risanuri Hidayat ◽  
I Wayan Mustika ◽  
Sunarno
Keyword(s):  
Broadcasting Service ◽  
Reception Mode

scholarly journals New Polarization Basis for Polarimetric Phased Array Weather Radar: Theory and Polarimetric Variables Measurement

2012 ◽  
Vol 2012 ◽  
pp. 1-15 ◽  
Author(s):  
Jian Dong ◽  
Qingfu Liu ◽  
Xuesong Wang
Keyword(s):  
Phased Array ◽  
Time Series Data ◽  
Weather Radar ◽  
Element Model ◽  
Polarization Measurement ◽  
Series Data ◽  
Precipitation Estimation ◽  
Dual Polarized ◽  
Measurement Biases ◽  
Reception Mode

A novel scheme is developed for mitigating measurement biases in agile-beam polarimetric phased array weather radar. Based on the orthogonal Huygens source dual-polarized element model, a polarization measurement basis for planar polarimetric phased array radar (PPAR) is proposed. The proposed polarization basis is orthogonal to itself after a 90° rotation along the array’s broadside and can well measure the characteristics of dual-polarized element. With polarimetric measurements being undertaken in this polarization basis, the measurement biases caused by the unsymmetrical projections of dual-polarized element’s fields onto the local horizontal and vertical directions of radiated beam can be mitigated. Polarimetric variables for precipitation estimation and classification are derived from the scattering covariance matrix in horizontal and vertical polarization basis. In addition, the estimates of these parameters based on the time series data acquired with the new polarization basis are also investigated. Finally, autocorrelation methods for both the alternate transmission and simultaneous reception mode and the simultaneous transmission and simultaneous reception mode are developed.

scholarly journals The Special Broadcasting Service after 30 Years: Public Service Media and New Ways of Thinking about Media and Citizenship

2009 ◽  
Vol 133 (1) ◽  
pp. 9-14 ◽  
Author(s):  
Terry Flew
Keyword(s):  
Recent Work ◽  
Public Service ◽  
Low Cost ◽  
Online News ◽  
Online Media ◽  
Current Affairs ◽  
Ways Of Thinking ◽  
Broadcasting Service

This article considers the distinctive ways in which the Special Broadcasting Service (SBS) has evolved over its history since 1980, and how it has managed competing claims to being a multicultural yet broad-appeal broadcaster, and a comprehensive yet low-cost media service. It draws attention to the challenges presented by a global rethinking of the nature of citizenship and its relationship to media, for which SBS is well placed as a leader, and the challenges of online media for traditional public service media models, where SBS has arguably been a laggard, particularly when compared with the Australian Broadcasting Corporation (ABC). It notes recent work that has been undertaken by the author with others into user-created content strategies at SBS and how its online news and current affairs services have been evolving in recent years.

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