Applicability of relative GPS to automated rendezvous between the space shuttle and space station

The purpose of this study is to determine the adequacy of the Global Positioning System (GPS) in providing relative navigation for automated rendezvous and proximity operations. The study was performed using the Proximity Operations Simulator (POS), Lockheed's high-fidelity, 6 degree of freedom simulation of the space shuttle and space station. This simulation includes identical models of GPS receivers for each vehicle. The navigation software in each vehicle includes identical Kalman filters. Each filter computes the absolute state of its vehicle, and the relative state vector is obtained by simply subtracting absolute states

Applicability of relative GPS to automated rendezvous between the space shuttle and Space Station

The purpose of this study is to determine the adequacy of the Global Positioning System (GPS) in providing relative navigation for automated rendezvous and proximity operations. The study was performed using the Proximity Operations Simulator (POS), Lockheed's high-fidelity, six-degree-of-freedom simulation of the Space Shuttle and Space Station. This simulation includes identical models of GPS receivers for each vehicle. The navigation software in each vehicle includes identical Kalman filters. Each vehicle estimates its own state, and the relative state is obtained by simply subtracting absolute states

Carmel Lagoon Water Quality and Steelhead Soundings: Fall 2007

ESSP 660 Advanced Watershed Science and Policy is a graduate class taught in the Master of Science in Coastal and Watershed Science & Policy program at California State University Monterey Bay. In 2007, the class was taught in four 4-week modules, each focusing on making a small contribution to a local watershed issue. This report describes the results of one of those 4-week modules – on Carmel Lagoon Water Quality and Ecology. The module was lead instructed by Fred Watson (CSUMB) and Kevan Urquhart (MPWMD). (Document contains 54 pages

Editorial Preface

Peer reviewe

Parish plans as a source of evidence of Aboriginal land use in the Mallee back country

The nature of Aboriginal people's use, indeed occupation, of the Victorian Mallee 'back country' warrants detailed investigation. Probably arising out of the paucity of observations of Aboriginal people on the land before it was pastorally occupied, an historical analysis from the 1870s suggesting Aboriginal people were not occupiers but mere 'seasonal visitors' to the 'back country' was unquestionably accepted for the next century. Growing understanding of the fundamentally sophisticated ways in which Aboriginal people managed their land has led to some recent historical works with a revised understanding of land use in the 'back country', but there is no agreement to move away from the orthodox historical paradigm. Parish plans from the Mallee, part of PROV's 'Parish and township plans' collection, were investigated to determine whether they contain evidence of former Aboriginal land use that could inform this question. It was found that these plans can potentially reveal the presence of pre-colonial Aboriginal water management, pathways, quarries, land management, cemeteries and placenames. Thus, parish plans were shown to be a potentially valuable resource that might have the capacity to support a reinvestigation of Aboriginal land use in the 'back country'. Approaches for a more detailed investigation of the value of these plans are suggested

Aboriginal fire-management practices in colonial Victoria

Through a close reading of particular episodes and a focus on the minutiae of action and context, this article adds to the literature on the customary use of fire by Aboriginal people in south-eastern Australia by highlighting the historically significant role Aboriginal people played in toiling alongside colonists and fighting fires during the colonial period. By scrutinising the written colonial records it is possible to reveal some of the measures that Aboriginal people used to help the colonists avoid cataclysmic fire. Lacking many direct Indigenous sources due to the devastation caused by rapid colonisation, we do this for the most part through a detailed examination of sheep and cattle graziers' journals, newspapers and government records. The article commences with an overview of colonists' observations of and attitudes regarding Aboriginal practices in relation to fire with specific reference to the region now referred to as Victoria and New South Wales. It concludes with an examination of the few recorded instances in which Aboriginal people tutored colonists in fighting fires, educating them how to use fire as a management tool, and the significant value they placed in Aboriginal knowledge relating to fire. © 2022 Astra Salvensis. All rights reserved

APPLICATION SPECIFIC 5G RAN SPLIT OPTIONS IN A SINGLE RADIO UNIT

Various technical specifications, such as Third Generation Partnership Project (3GPP) and Open Radio Access Network (O-RAN) specifications, define various functional splits that can be utilized for a Fifth Generation RAN (5G-RAN). For example, Split option 2 and Split option 7.2 are the typical implementations, and Split option 6 (Physical layer/femto application platform interface (PHY/FAPI)) is likely to be prevalent soon. Split option 7.2 is fronthaul heavy and involves strict latency budgets. For example, Split option 7.2 needs roughly four times the bandwidth of Split option 2/6 for the same amount of user plane throughput. Presented herein is a system in which a RAN Radio Unit (RU) can be operated simultaneously in two connectivity split options in order to cater to different use-cases simultaneously