Navigation Links
New technology may help Olympic sailing
Date:6/30/2008

WASHINGTON, June 30A team of researchers at the Ocean University of China has developed and tested a mobile lidar (light detection and ranging) station that can accurately measure wind speed and direction over large areas in real time -- an application useful for aviation safety, weather forecasting and sports.

As described in the July 1 issue of the journal Optics Letters, published by the Optical Society, the mobile lidar station can measure wind fields more accurately, which could help world-class athletes compete in international competitions, such as the Olympics. Ocean University is in Qingdao, which is hosting the sailing competitions of the XXIX Olympic Games and the Beijing 2008 Paralympic Games, and this technique is being tested in conjunction with the event.

"Wind is non-uniform even in a small sailing field," says Professor Zhi-Shen Liu of the Key Laboratory of Ocean Remote Sensing, Ministry of Education of China, Ocean University of China, who led the research. "Athletes could maximize their performances if they have the most accurate information to help them capture the wind."

In Olympic sailing, individual competitors or teams of athletes sail various classes of sailboats in timed trials over a single course. The contest requires them to navigate upwind, downwind and everything in between. Their final time depends on numerous factors, including the boat design, the skill of the sailors, course difficulty and ocean currents. Perhaps the most important factor, though, is how well the athletes can harness the wind that fills their sails.

Because wind constantly changes speed and direction, athletes and coaches hope to have the best information at the start of a run. On cloudy, rainy days, the standard meteorological tool of Doppler radar can accurately provide wind field information. When no clouds are present, however, Doppler radar is ineffective. The best wind data on clear days comes from ocean buoys and land stations that use wind cups and ultrasonic anemometers to measure wind speed.

In the Qingdao sailing area, where this summer's competitions will take place, only four buoys, one boat and one tower are available to measure sea surface winds within a competition area of approximately 10 square kilometers.

Liu and his lidar group, composed of research scientists and graduate students, have been working with an optical remote sensing technology called Doppler lidar, which they are applying for weather and environmental research. Lidar works by scattering laser beams off atmospheric aerosols or molecules. Doppler lidar takes advantage of the fact that when these aerosols or molecules are moving in the wind, the scattered laser light changes frequency -- the same way an approaching car has a higher pitched sound than a car driving away.

The advantage of Doppler lidar, says Liu, is that it can quickly sample a large area, providing a much finer map of winds than buoys alone. He and his group have developed a lidar bus, which can move equipment to the experiment field conveniently.

Last year, they successfully tested their new bus at the 2007 Qingdao International Regatta sailing event. They moved the bus to the seashore near the sailing field, and made a horizontal scan over the sea surface, making the measurement in real time and then uploading the data to the local meteorological station every 10 minutes. They envision a similar effort in the upcoming Olympic and Paralympic games.


'/>"/>

Contact: Angela Stark
astark@osa.org
202-416-1443
American Institute of Physics
Source:Eurekalert

Related medicine news :

1. Quantum light beams good for fast technology
2. New Smart Technology Makes Patient Data Collection Easier, More Efficient
3. Align Technology Executive to Present at Upcoming Financial Conferences
4. Pioneer Surgical Technology Hires Vice President of New Business Development
5. Purdue researchers develop technology to detect cancer by scanning surface veins
6. Creative Technology Services Enhances its Global Competitiveness with Additional Regulatory Certifications
7. University of Wisconsin Hospitals and Clinics Complete System-Wide Conversion to Masimo SET Pulse Oximetry Technology
8. Patent Reform Legislation Threatens Americas Leadership in Medical Technology Innovation
9. Stevens Health, Technology and Society roundtable: Sept. 19
10. Microbiotic technology developed for microinjection of zebrafish embryos
11. Proven Terumo Coronary Guidewire Technology Is Now Available in the United States
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/27/2017)... ... July 27, 2017 , ... MAP Health Management, LLC., ... Fierce Innovation Awards: Healthcare Edition 2017, an awards program from the publisher of ... Health Management/Patient Engagement Solutions. , MAP was selected as a finalist for ...
(Date:7/27/2017)... ... July 27, 2017 , ... Team Novo Nordisk, the world’s first all-diabetes ... pro squad as a stagiaire for the remainder of the 2017 season. One of ... 31st at the Tour of Utah. , “Every season we are excited to move ...
(Date:7/27/2017)... York, NY (PRWEB) , ... July 27, 2017 ... ... to President Barack Obama from 2012-2016, will keynote Day 2 of the HIMSS ... The event kicks off at the Sheraton Boston Hotel, Sept. 11-13, 2017. , ...
(Date:7/26/2017)... , ... July 26, 2017 , ... Capillus, LLC has ... hereditary hair loss. The new Flexible Fitting Design offers a more comfortable, adaptable fit ... is delighted with the improvements to the home-use laser therapy caps intended to improve ...
(Date:7/26/2017)... (PRWEB) , ... July 26, 2017 , ... Six greater Bay Area roller derby leagues ... “Make ‘em Bleed,” the most widely attended series of blood drives in California, beginning July ... blood over the past 4 years -- enough to have helped to save up to ...
Breaking Medicine News(10 mins):
(Date:7/21/2017)... you know that PhRMA member companies invested $65.5 billion in research ... medicines, generics and the supply chain account for 14 percent of ... this (7 percent)? Or that the United States ... in high-growth biopharmaceutical startups? ... The biopharmaceutical industry accounts for ...
(Date:7/17/2017)... , July 17, 2017  MedX Holdings, Inc., ... medical testing, strengthening and rehabilitation equipment, today announced the ... Program. MedX is considered the gold standard for the ... in specialized medical strengthening equipment. ... lease with the physician or practice who prescribe the ...
(Date:7/14/2017)... LAS VEGAS , July 13, 2017 It ... the United States is in the midst of ... Disease Control , since 1999, the number of overdose deaths ... , "resulting in over half a million dead from 2001 ... like codeine, oxycodone, and hydrocodone has similarly quadrupled, drawing a ...
Breaking Medicine Technology: