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In radar applications, target velocity is commonly determined using the Doppler effect. By comparing the transmit-receive differential frequency the Doppler frequency shift can be measured and as a result the target velocity can be determined. The Tasman International Geospace Environment Radars (TIGER) form part of an international network of similar HF radars called Super Dual Auroral Radar Network...
The Tasman International Geospace Environment Radars (TIGER) form part of an international network of similar HF radars called Super Dual Auroral Radar Network (SuperDARN) which explore the impact of solar disturbances on Earth. These radars utilise an Auto Correlation Function (ACF) to measure the changing phase of the ACF between lag times to determine the Doppler frequency and the target velocity...
The Tasman International Geospace Environment Radars (TIGER) form part of an international network of similar HF radars called Super Dual Auroral Radar Network (SuperDARN) which explore the impact of solar disturbances on Earth by monitoring the location and velocity of plasma of plasma irregularities and related phenomena occurring in the ionosphere. These radars utilise an Auto Correlation Function...
In radar applications, the target velocity is commonly determined using the Doppler effect. By comparing the transmit-receive differential frequency, the Doppler frequency shift can be measured, and as a result, the target velocity can be determined.
The TIGER-3 radar is being developed as an “all digital” radar with 20 integrated digital transceivers, each connected to a separate antenna. Using phased array antenna techniques, radiated power is steered towards a desired direction based on the relative phases within the array elements. This paper proposes an accurate phase measurement method to calibrate the phases of the radio output signals...
SuperDARN is an international network of HF radars dedicated to the study of the Earth's upper atmosphere and ionosphere. The radars operate between 8 to 20 MHz and thus require broadband antennas for optimal performance. Since the first coherent HF backscatter radar was deployed by The John Hopkins University Applied Physics Laboratory these types of radars have utilised large Log-periodic Dipole...
We have studied the pharmacokinetics of cis-trans, trans-trans and cis-cis mivacurium in nine healthy patients (creatinine clearance 66-133 ml min-1), in seven patients with end-stage renal failure requiring dialysis (creatinine clearance 4-11 ml min-1) and in seven patients with impaired renal function (creatinine clearance 32-49 ml min-1), during thiopentone-fentanyl-midazolam-nitrous oxide-oxygen...
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