The NASA-CONAE Aquarius/SAC-D observatory for measuring the changing global distribution of sea surface salinity at unprecedented accuracy from space is scheduled to launch in 2010 [1]. The Aquarius Instrument comprises a 1.4 GHz radiometer and a 1.2 GHz scatterometer, both of which share a common reflector antenna, feed network, and other electronics. The ability to measure sea surface salinit...

Existing engineering materials allow the constuction of towers to heights of many kilometers. Orbital launch from a high altitude has significant advantages over sea-level launch due to the reduced atmospheric pressure, resulting in lower atmospheric drag on the vehicle and allowing higher rocket engine performance. High-altitude launch sites are particularly advantageous for single-stage to or...

The paper investigates the strategic behavior of hedge fund families. It focuses on decisions to start and liquidate family-member funds. Hedge fund families tend to liquidate funds that underperform compared to other member funds, and to replace them by new ones. By choosing a launch time after a short period of superior performance by their member funds, families extend the spillover to new f...

The objective of this paper is to assess and compare the capability of P code and high performance C/A code receiver technologies for survey launch positioning at sea water to the sub-metre level. The receivers used to assess these technologies are the dual frequency Ashtech P-XII and the single frequency NovAtel GPSCardrM. Sea trials were conducted at velocities of 10 to 15 knots using both re...

People and Nature in association with Coastwatch Ireland will be celebrating International Low Tide day with a fun sea shore discovery trip. Come along and discover the secret life of rock pools. Coastwatch Ireland will officially launch the National Coastal Biodiversity Survey on the day and will be encouraging volunteers to take part by walking a stretch of coastline during the month of June ...

Improvement of the launch phase of a jet powered Unmanned Aerial Vehicle (UAV) with Jet Assisted Take Off (JATO), has been the subject of attention in the UAV industry. Use of flight simulation tools reduces the risk and required some amount of flight testing for complex aerospace systems. Full nonlinear equations of motion are used to study and simulate this maneuver and three case studies of ...