Featured Research

from universities, journals, and other organizations

Radar measurements of highest precision

Date:
September 14, 2012
Source:
Karlsruhe Institute of Technology
Summary:
Scientists have reached a record precision in radar distance measurements. With the help of a new radar system, an accuracy of one micrometer was achieved in joint measurements. The system is characterized by a high precision and low cost. Potential applications lie in production and plant technology.

With the help of a new radar system, an accuracy of one micrometer was achieved in joint measurements.
Credit: Image courtesy of Karlsruhe Institute of Technology

Scientists of KIT and Ruhr-Universität Bochum (RUB) have reached a record precision in radar distance measurements. With the help of a new radar system, an accuracy of one micrometer was achieved in joint measurements. The system is characterized by a high precision and low cost. Potential applications lie in production and plant technology.

Precise determination of distances is of increasing importance in fabrication technology, for instance, when actuating robots, producing micromechanical components, or controlling machine tools. Frequently, glass scales, inductive sensors, or laser measurement systems are used for distance measurements. Glass scales are very precise and reach micrometer precision. However, they are too inflexible and expensive for daily use. Inductive sensors measuring distances with a coil, magnetic field, and movement work in a contact-free manner and, hence, without wear, but are limited in the measurement repetition rate. Lasers also allow for a highly precise measurement, but are not suited for environments with dust, humidity, or strongly changing light conditions. Radar signals, by contrast, can penetrate dust and fog quite well. So far, radar systems have been used mainly for weather observation, air monitoring or distance measurement in vehicles.

Scientists of the Institut für Hochfrequenztechnik und Elektronik (IHE) of Karlsruhe Institute of Technology (KIT) under Prof. Thomas Zwick and of the Chair for Integrated Systems of Ruhr-Universität Bochum (RUB) under Prof. Nils Pohl have now developed and successfully applied a radar system for distance measurements. It is characterized by a so far unreached precision: In a joint test in July this year, the researchers from Karlsruhe and Bochum reached a new record precision for radar distance measurements of one mi-crometer. One micrometer is a millionth of a meter. For comparison: A human hair is about 40 to 60 micrometers thick.

For measurement, the scientists use a frequency-modulated continuous wave radar (FMCW radar), whose emitter is operated continuously during measurement. The RUB researchers developed the hardware, KIT scientists the algorithmics. The radar system with a special measurement setup measures distances of up to several meters in free space with micrometer accuracy. Compared to laser systems, this system is not only cheaper, but can also measure absolute positions. Due to this quasi unlimited range of uniqueness, the radar is far superior to the laser.

The radar system is now being optimized in several research projects. Its accuracy will be further improved. In the future, it will be used to make measurements in production and plant technology with high precision, in a flexible manner, and at low costs.

Related Articles



Story Source:

The above story is based on materials provided by Karlsruhe Institute of Technology. Note: Materials may be edited for content and length.


Cite This Page:

Karlsruhe Institute of Technology. "Radar measurements of highest precision." ScienceDaily. ScienceDaily, 14 September 2012. <www.sciencedaily.com/releases/2012/09/120914131532.htm>.
Karlsruhe Institute of Technology. (2012, September 14). Radar measurements of highest precision. ScienceDaily. Retrieved November 25, 2014 from www.sciencedaily.com/releases/2012/09/120914131532.htm
Karlsruhe Institute of Technology. "Radar measurements of highest precision." ScienceDaily. www.sciencedaily.com/releases/2012/09/120914131532.htm (accessed November 25, 2014).

Share This


More From ScienceDaily



More Matter & Energy News

Tuesday, November 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Flying Enthusiast Converts Real-Life Aircraft Cockpit Into Simulator

Flying Enthusiast Converts Real-Life Aircraft Cockpit Into Simulator

Reuters - Innovations Video Online (Nov. 25, 2014) — A virtual flying enthusiast converts parts of a written-off Airbus aircraft into a working flight simulator in his northern Slovenian home. Jim Drury reports. Video provided by Reuters
Powered by NewsLook.com
Car Park Solution for Flexible Green Energy

Car Park Solution for Flexible Green Energy

Reuters - Innovations Video Online (Nov. 24, 2014) — A British solar power start-up says that by covering millions of existing car park spaces around the UK with flexible solar panels, the country's power problems could be solved. Suzannah Butcher reports. Video provided by Reuters
Powered by NewsLook.com
Microsoft Adds Robot Guards, Ushers In Sci-Fi Apocalypse

Microsoft Adds Robot Guards, Ushers In Sci-Fi Apocalypse

Newsy (Nov. 23, 2014) — Microsoft has robotic security guards working at its Silicon Valley Campus. Video provided by Newsy
Powered by NewsLook.com
US Army Completes Ebola Treatment Unit

US Army Completes Ebola Treatment Unit

Reuters - US Online Video (Nov. 22, 2014) — The US Army of engineers completes Ebola treatment center in Liberia. Julie Noce reports. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins