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Online Parameter Estimation Under Non-Persistent Excitations For High-Rate Dynamic Systems, Jin Yan, Simon Laflamme, Jonathan Hong, Jacob Dodson 2021 Iowa State University and Palo Alto Research Center

Online Parameter Estimation Under Non-Persistent Excitations For High-Rate Dynamic Systems, Jin Yan, Simon Laflamme, Jonathan Hong, Jacob Dodson

Civil, Construction and Environmental Engineering Publications

High-rate dynamic systems are defined as systems experiencing dynamic events of typical amplitudes higher than 100 gn for a duration of less than 100 ms. They are characterized by 1) large uncertainties on the external loads; 2) high levels of nonstationarity and heavy disturbance; and 3) generation of unmodeled dynamics from changes in mechanical configuration. To fully enable these systems, feedback capabilities must be developed. This includes computationally fast software and low latency hardware. This paper presents a pure time-based online parameter estimation algorithm for high-rate dynamic systems with real-time applicability. The algorithm is based on a model reference ...


Satellite Security And Performance In An Era Of Dual Use, Joseph N. Pelton 2021 Ohio University

Satellite Security And Performance In An Era Of Dual Use, Joseph N. Pelton

Online Journal of Space Communication

Since the mid-1990s the U.S. Government and military forces have placed more and more reliance on commercial satellite systems for military communications of a non-tactical nature. Requirements such as the U.S. Armed Forces Radio and Television require a great deal of bandwidth but do not require any special security protection. Further there are many other forms of communications involving national security or defense systems where a varying degree of security is required. Many of these applications do not require a very high level of "top secret" protection since these communications do involve tactical, strategic or highly classified messages ...


International Guidelines For The Preservation Of Space As A Unique Resource, Phillip D. Anz-Meador 2021 Ohio University

International Guidelines For The Preservation Of Space As A Unique Resource, Phillip D. Anz-Meador

Online Journal of Space Communication

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Overview: Satellite Signal Security: Copyright Protection Korean Dbs Content And Transaction Security, Don Flournoy 2021 Ohio University

Overview: Satellite Signal Security: Copyright Protection Korean Dbs Content And Transaction Security, Don Flournoy

Online Journal of Space Communication

As a result of new developments in broadband communication, residential users, office workers and those who move from place to place have more ways to access the programming and services they want when they want them.


Space-Based Offensive Weapons: Have Policymakers Discussed This Enough?, Kathleen M. Sweet 2021 Ohio University

Space-Based Offensive Weapons: Have Policymakers Discussed This Enough?, Kathleen M. Sweet

Online Journal of Space Communication

Arguably, one of the most significant global security policy debates of the 21st century is whether the United States and more specifically the Bush Administration should develop and deploy space-based weaponry. The age of space is upon us. But how convinced is the rest of America, the West and potential adversaries of the legitimate need to do so? For almost half a century, the world's space powers have abstained from deploying such weapons as basic unwritten policy. To date, the military has been limited to surveillance, navigation and communications satellites


Overview: Space Security: Possible Issues And Potential Solutions, Ziad I. Akir 2021 Ohio University

Overview: Space Security: Possible Issues And Potential Solutions, Ziad I. Akir

Online Journal of Space Communication

Space communication has become an integral component of our overall global telecommunication infrastructure. Satellites are being used for telecommunication, business, entertainment, education, Internet, navigation, remote sensing, imaging, and weather forecasting.

Satellites are also providing backup communication capabilities when terrestrial communication is interrupted in cases such as earthquakes or other natural (or unnatural) disasters. The September 11th events in 2001 demonstrated the value of redundant satellite systems in supporting rescue efforts.


Overview: The Increasing Threat To Satellite Communications, Sean Patrick Bain 2021 Ohio University

Overview: The Increasing Threat To Satellite Communications, Sean Patrick Bain

Online Journal of Space Communication

Communication security has been a priority since the beginning of recorded history. The survival of human cultures has always relied on the use of accurate information transported over distances. The interception of this information, preventing its reception or its misuse, can alter the course of nations. As technology advances, so too does the threat to modern satellite communication. The methods of interfering with or intercepting satellite signals are numerous and need to be better understood.

As has been demonstrated by a small team of undergraduate students, the capability to intercept the nation's communication satellite signals is no longer limited ...


Issue 6: From The Guest Editor, Kathleen Sweet 2021 Ohio University

Issue 6: From The Guest Editor, Kathleen Sweet

Online Journal of Space Communication

Guest editor introduction.


Structural Reform For It Competitiveness In Japan, Kei Hata 2021 Ohio University

Structural Reform For It Competitiveness In Japan, Kei Hata

Online Journal of Space Communication

Five years ago, in order to publicize the necessity for the Japanese government to have an Information Technology policy that until then was largely ignored, as a member of the House of Counselors of the Japanese Diet, I created an urgent proposal and presented it to Prime Minister Hashimoto.


Issue 5: Contributors, Bruce Elbert 2021 Ohio University

Issue 5: Contributors, Bruce Elbert

Online Journal of Space Communication

List of issue 5 contributors.


Bridging The Digital Divide: Towards A New Paradigm, Virgil Labrador 2021 Ohio University

Bridging The Digital Divide: Towards A New Paradigm, Virgil Labrador

Online Journal of Space Communication

My direct experience in the "digital divide" was when I was marketing director for a band-new state-of-the-art program origination and satellite transmission facility in Singapore seven years ago in 1996. Our first and anchor client was the highly successful Discovery Network--which housed in our facility the first all-digital channel to the Asia-Pacific market.


Bridge Over Troubled Skies: Satellite Broadband And The Digital Divide, Phillip L. Spector 2021 Ohio University

Bridge Over Troubled Skies: Satellite Broadband And The Digital Divide, Phillip L. Spector

Online Journal of Space Communication

A few years ago, at the height of the Internet boom, pundits often spoke of "Internet time." They meant many things by this reference, but certainly there was a recognition that a key strength of the Internet is the fast communications speeds involved. While the concept of "Internet time" has faded somewhat with the bloom on the Internet rose, it is still the case that ever-increasing numbers of Americans and others in the world have access to high-speed Internet services. Through this access, they are able to refer quickly to a myriad of resources that have made the Internet an ...


The Digital Divide… Teach A Man To Fish!, Vince Waterson 2021 Ohio University

The Digital Divide… Teach A Man To Fish!, Vince Waterson

Online Journal of Space Communication

Recently Kim Hak-Su, Executive Secretary of the United Nations Economic and Social Commission for Asia and the Pacific (UNESCAP) that co-organized the regional conference together with the Japanese Government and other collaborators, acknowledged that more work is needed. "The Tokyo Declaration is directional", he said. "We need more meetings".


Strengthening Access To Communications Policy & Regulatory Guidelines For Satellite Services, David Hartshorn 2021 Ohio University

Strengthening Access To Communications Policy & Regulatory Guidelines For Satellite Services, David Hartshorn

Online Journal of Space Communication

This work is designed to help bridge the "Regulatory Divide" that continues to thwart end users' efforts to obtain affordable communications. From tele-medicine to distance learning to rural telecenters to disaster recovery to enterprise networks, the satellite industry is offering not only telecommunications solutions for the "have nots", but also the regulatory tools to enable the public sector to fulfill their policy objectives.


Technological Issues: A Day In The Life Of A Satcom Engineer In Nigeria, Andy Hope 2021 Ohio University

Technological Issues: A Day In The Life Of A Satcom Engineer In Nigeria, Andy Hope

Online Journal of Space Communication

The day began early, like all African days.


Technological Issues: The Citizen Initiated Performance Assessment (Cipa) Initiative Through Wireless Technology, William Stowe 2021 Ohio University

Technological Issues: The Citizen Initiated Performance Assessment (Cipa) Initiative Through Wireless Technology, William Stowe

Online Journal of Space Communication

Many governments, including my own that serves a population of about 200,000 Central Iowans, have been reluctant to invest in technologies supporting e-government services. The operating assumption for this reluctance is that the "digital divide" delivers the benefits of e-government to the wealthiest and often most educated citizens, effectively diverting resources to constituencies traditionally less reliant on government services than the poor who are often left on the down side of the "digital divide". While "digital divide" considerations are and should continue to be a focal point in deciding allocation of scarce financial resources supporting technological improvements, reallocation of ...


Technological Issues: Closing The Digital Divide Through Resource Allocation Techniques, Avi Barda, Zvi Ner, Shaul Laufer 2021 Ohio University

Technological Issues: Closing The Digital Divide Through Resource Allocation Techniques, Avi Barda, Zvi Ner, Shaul Laufer

Online Journal of Space Communication

It is only after access to technology is assured that computer literacy can begin. Access is not simply having access to up-to-date technology; it should also include access to qualified teachers, appropriate software and Web content. Vital to this issue is the quality and quantity of the access.

The optimisation of the bandwidth use, obtained by implementing bandwidth allocation schemes and suited protocol solutions, will allow providing improved quality of service and reduced cost of broadband Internet access. This technology will allow the provision of QoS-based broadband services in hazardous environments and in areas where the technological development is less ...


Social And Cultural Issues: The Impact Of Digital Divide On Development And How Satellite Addresses This Problem, Robin Gambu Wani Latio 2021 Ohio University

Social And Cultural Issues: The Impact Of Digital Divide On Development And How Satellite Addresses This Problem, Robin Gambu Wani Latio

Online Journal of Space Communication

The paper examines the problem of inaccessibility to education by the vast majority in East Africa, the factors that contribute to education problems and how the digital divide further helps isolate people in the rural communities of the region.

The author proposes satellite technology as the solution to the digital divide and offers reasons to support this proposition. Technology use in Uganda is discussed as a case study to provide further evidence that satellite communications help close the digital divide gap.


Social And Cultural Issues: Information And Communication Technology Policy In Mongolia, Lkhagvasuren Ariunaa 2021 Ohio University

Social And Cultural Issues: Information And Communication Technology Policy In Mongolia, Lkhagvasuren Ariunaa

Online Journal of Space Communication

In the networking age, every country needs the capacity to understand and adjust global technologies for local needs. In the mid-seventies, the Government of Mongolia was giving much emphasis to science and technology information, having State Committee on Science and Technology and research institutions underneath.

The main purpose of the State Committee was to focus on the provision of the science and technology information mainly received from academic institutions of former Soviet Union and socialist system countries. A number of the policy regulatory documents were developed to address the issues of the science and technology information.


Social And Cultural Issues: The Digital Divide In The Gobi Desert: Spatiality, The National Identity Collapse, And A Language Gap, Undrahbuyan Basaanjav 2021 Ohio University

Social And Cultural Issues: The Digital Divide In The Gobi Desert: Spatiality, The National Identity Collapse, And A Language Gap, Undrahbuyan Basaanjav

Online Journal of Space Communication

No research has been conducted to examine how people in the countryside of Mongolia use the Internet and what social and cultural influences the Internet bring to these people. This study focuses on the geographical and cultural aspects of the digital divide in the Gobi desert of Mongolia. In this paper, I argue that the Internet brings a sense of mobility to people in remote Mongolia, which lets them move through social spaces. In the Gobi Desert the Internet has begun to break the geo-spatial notion of local vs. global. People in the Gobi Desert already use instant and mobile ...


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