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On the coupling between the Harang reversal evolution and substorm dynamics: A synthesis of SuperDARN, DMSP, and IMAGE observations Journal of Geophysical Research, 2009 (Ref: 13788)
Category 1: Peer-reviewed literature

The Harang reversal is a prominent feature frequently observed in the electric and … magnetic field patterns in the high-latitude auroral zone and plays an important role … in substorm dynamics. A comprehensive set of instruments, including Super Dual Auroral … Radar Network (SuperDARN)…

High spatial resolution observations of ionospheric convection in the midnight sector during the growth of a geomagnetic storm Proceedings of the SuperDARN 2008 Workshop, Newcastle, Australia, 1 - 6 June 2008, 2008 (Ref: 13783)
Category 3: Conference paper

A magnetic cloud in the solar wind impinged the Earths magnetosphere on the 7th January … 2005. Episodic enhancements in the coupling of solar wind energy initiated a familiar sequence … of Geospace events including a succession of substorms of increasing intensity throughout the … day.

New investigations of magnetosphere-ionosphere-thermosphere processes and their impact on space weather 5th NSSA National Space Science Conference, Melbourne, 14-16 September, 2005. Conference ISBN: 0 86459 3740, 2005 (Ref: 13449)
Category 3: Conference paper

Space weather impacts on some important modern technologies, particularly … those that depend on satellites. The La Trobe Space Physics Research Group studies the basic physical causes of space … weather phenomena in geospace, the interface between Earth and interplanetary space.

Why do we need "DigiDARN" - a global network of digital SuperDARN radars? Proceedings of the Workshop on the Applications of Radio Science, Refereed Paper R-25, Leura, New South Wales, 15-17 February, 2006, 2006 (Ref: 13075)
Category 1: Peer-reviewed literature

The Super Dual Auroral Radar Network (SuperDARN) is an international network of oblique HF over-the-horizon … radars dedicated to the study of high latitude magnetosphere-ionosphere convection. In scientific terms, they have been … an outstanding success…

A High Performance Digital Radar for Extended Space Weather Investigations Australian Institute of Physics (AIP) 17th Congress, Refereed Paper 48, Brisbane, 4-8 December 2006, 2006 (Ref: 13048)
Category 3: Conference paper

This paper outlines work at La Trobe University on the development of a “fully digital” radar for space weather … investigations. The new radar will enhance the existing Tasman International Geospace Environment Radar … (TIGER) that probes beyond the horizon…

FPGA Implementation of a Phased Array DBF using Distributed Arithmetic Method Proceedings of the 6th International Conference on Optimization: Techniques and Applications (ICOTA), 2005 (Ref: 13047)
Category 3: Conference paper

Efficient digital phased array beams require a high resolution timing vector. The timing coefficients cause speed bottleneck … in FPGA implementation of such systems in the HF frequency range. Distributed Arithmetic (DA)…

FPGA Implementation of Digital Upconversion using Distributed Arithmetic FIR Filters Proceedings of the 2004 IEEE International Conference on Field-Programmable Technology, 2004 (Ref: 13046)
Category 3: Conference paper

Distributed Arithmetic (DA) is a high speed … multiplication technique used for implementation of digital … filters and signal upconversions. The DA is bit serial word … parallel approach where throughput rate does not depend … on flter length or data ste.

FPGA implementation of a phased array DBF using a Latch Method Proceedings of the International Networking and Communications Conference, 2004 (Ref: 13008)
Category 3: Conference paper

Abstract - Timing resolution plays significant role in … generating digital phased array beams. In this paper we … present a latch method for FPGA implementation of digital … heamforming (DBF') for an ionospheric radar.

Analog conversion for FPGA implementation of the TIGER transmitter using a 14 bit DAC Proceedings of the Second IEEE International Workshop on Electronic Design Test and Applications, 2004 (Ref: 13007)
Category 3: Conference paper

FPGA is a potential medium for DSP implementation of direct conversion transmitters and receivers. However analog interface cannot be ruled out since amplification and other tasks are still in the analog domain. In a previous work…

Quantization effects in digital upconversion and digital beam forming for TIGER Radar System WARS04 (Workshop on the Applications of Radio Science) Proceedings, National Committee for Radio Science, Australian Academy of Science, Paper G11, 2004 (Ref: 13006)
Category 3: Conference paper

Quantization is a representation of data samples with a certain number of bits per sample after rounding to a suitable … level of precision. Quantization errors in a Digital Signal Processing (DSP) system can be introduced from three … sources; one source is input quantization…

Digital stereo enhancement to the TIGER Radar System WARS04 (Workshop on the Applications of Radio Science) Proceedings, National Committee for Radio Science, Australian Academy of Science, Paper G15, 2004 (Ref: 13005)
Category 3: Conference paper

The Tasman International Geospace Environment Radar (TIGER), which is part of the global SuperDARN network, is a dual HF radar system with overlapping footprints designed to map ionospheric motions by detecting ionospheric scatter.

Towards a synthesis of substorm electrodynamics: HF radar and auroral observations Annales Geophysicae, 2006 (Ref: 13004)
Category 1: Peer-reviewed literature

At 08:35 UT on 21 November 2004, the onset of … an interval of substorm activity was captured in the southern … hemisphere by the Far UltraViolet (FUV) instrument on … board the IMAGE spacecraft. This was accompanied by … the onset of Pi2 activity and subsequent magnetic bays…

Optimising estimates of mesospheric neutral wind using the TIGER SuperDARN radar Advances in Space Research, 2006 (Ref: 12949)
Category 1: Peer-reviewed literature

Super Dual Auroral Radar Network (SuperDARN) HF backscatter radaras scan 16 beam directions over a field of view of ~52°. In the common mode of operation, data is collected using 45-km range gates and 7-s integrations on each beam.

Interhemispheric asymmetries in the occurrence of magnetically conjugate sub-auroral polarisation streams Annales Geophysicae, 2005 (Ref: 12946)
Category 1: Peer-reviewed literature

Earthward injections of energetic ions and electrons … mark the onset of magnetospheric substorms. In the inner … magnetosphere (L4), the energetic ions drift westward … and the electrons eastward, thereby enhancing the equatorial … ring current.

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