Laser Radar to Explore Mars "Life"

Haitianli - Tuesday, November 15, 2016.
Enviado por laserman123

NASA scientists looking for life on Mars, the biggest concern is that if one day found a trace of life, the results came back to see the pollution brought about by the Earth. Now with an upgraded version of the lidar LIDAR, both to solve the concerns of scientists, but also to explore more efficient.

This tool is called the Bio-Indicator Lidar Instrument (BILI). Branimir Blagojevic is now a technical expert at the NASA Goddard Space Flight Center, which originally served the company that pioneered the development of the device. At NASA, Blagojevic uses his experience and skills to turn this technology into a working prototype, proving that the instruments used to detect biological hazards in public places can also be used to detect organic matter on Mars. LIDAR works much like a radar, but it uses a 2000mw laser pointer to measure distances and determine the composition of airborne particles.

BILI is actually a fluorescent LIDAR, according to the fluorescence emission detection of chemical substances. NASA has already made extensive use of fluorescence-tagged sensors in climate studies, but they will soon apply them to planetary research. "If the space agency uses it, it will be the first," Blagojevic said. Because it can be a few hundred meters away from real-time detection of a small number of complex molecules, BILI can be NASA plans to launch in 2020, the next rover nose. This tool can be used to scan biomarkers in areas where the rover is difficult to reach, while avoiding sample contamination.

At present, Blagojevic expected BILI will be installed in the rover mast. First, the instrument will scan the dust on the Mars plume, once detected, it will execute the command, the dust shot two ultraviolet 500mw laser pointer, the manufacture of optical pulse. The light causes the dust plume to resonate or fluoresce. Then it only needs to analyze the signal, and with the database in the known marker for comparison can detect organic particles. This analysis also reveals the size of the particles.

"If there is a biomarker, it can be detected in the dust," Blagojevic said. "This provides an excellent supplemental life detection tool for use with more sensitive point-in -ductive mass spectrometers.BILI's detection uses only power and can quickly scan a wide area, which is a specialized sniffing of special particles Nose. "NASA plans to install BILI or its follow-up versions on spacecraft, which can significantly increase the likelihood of detecting biomarkers in the solar system. Blagojevic and his colleagues, the biggest challenge is to improve the existing burning laser pointer design. Their goal is to make BILI smaller and more resistant to action, more sensitive to more biological particles.

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