Skip to main content

The laser-sharp GPS is the new tool for global positioning.

The laser-sharp GPS is the new tool for global positioning. 


Laser retroreflector arrays (LRAs) are laser-based systems that give extended accuracy for the GPS. The system base is in reflectors that are on the ground. Then the LRA satellite aims the laser ray at that reflector. This kind of system can used to calibrate the system. When the laser ray impacts a very high-accuracy positioned mirror the laser system can calibrate the GPS satellite. 

If those reflectors are in the same position, the satellite can measure differences in those reflector's vertical and horizontal positions. The laser reflector can also connected to a man or vehicle. That allows the laser system to locate the person or vehicle.  Or the ground station group can position the satellite at the orbiter using lasers. That gives the system ultimate accuracy. 



"GPS satellites support Earth measurements by relaying information to other satellites. Laser retroreflector arrays (LRAs) are improving this process, enhancing the accuracy of geodesy – the study of Earth’s shape and changes. LRAs enable precise distance measurements, essential for monitoring global phenomena like sea level rise and tectonic shifts. (Artist’s concept.) Credit: SciTechDaily.com" (ScitechDaily.com/Laser Sharp GPS: How NASA’s Reflectors Are Redrawing Our World)


The other version uses lasers as the GPS to aim the active laser upward. That laser can also used as laser sight. The laser sights are multi-use tools, that can be used as laser microphones, laser sights, target indication, and laser communication tools. Systems can used to point the person or vehicle, and laser can send an IFF (Identification Friend or Foe) signal for incoming helicopters or aircraft. 

Then photo recon satellite, drone or aircraft, or earth observation satellite (KH13, Landsat) detects that laser ray. That kind of system can also transmit information like encoded data messages to those satellites. That allows engineers to connect communication tools for this kind of system. The laser-based communication is always harder to jam than radio-based systems. 

And even if somebody jams the system, the jammer must use the same frequency as the jammed communication tool. Then the jamming laser ray must have a higher energy level than the communication laser. That makes the jamming laser turn the laser ray that transports data to satellites in another direction. But the satellites and other optical systems can see the point, where the jamming station is. 

The jammer laser must cut the communication laser using very high accuracy. And if the first communication laser uses IR light the other can use UV frequency. That makes it harder to cut the data line. And of course, those satellites can use multi-band systems. Like different wavelength coherent radio waves and optical systems. 

https://scitechdaily.com/laser-sharp-gps-how-nasas-reflectors-are-redrawing-our-world/

Comments

Post a Comment

Popular posts from this blog

What is the difference between TR-3A and TR-3B? And are those planes real?

What is the difference between TR-3A and TR-3B? And are those planes real? Is TR-3B (0) "Black Triangle UFO" or is it only the piece of paper?  The study project, what is used to create advanced ideas for use of the nuclear-powered aircraft. Or is it the study project or black budget aircraft, where lost 2,3 trillion dollars (1)of the stealth bomber were gone. In this text is things, that might seem very difficult to accept, and when we are thinking about things like doubling the object or making it smaller by using huge layers of energy, nothing denies to test those things. But were those tests successful, there is no data about that in public Internet, so we must say that things like doubling the human or aircraft can be tested, but the results can be unknown.  But in the source two is the tale, what seems like impossible, those men, who got Noble Prize put at first time one atom to the box, and hit it with photon one photon in the box and hit it with th
Post a Comment
Read more

Mythic Planet X is an interesting thing because that allows the way to the perfect stealth technology.

  Mythic Planet X is an interesting thing because that allows the way to the perfect stealth technology.  Could a hypothetical Planet X tunnel all radiation?  The myth of Planet X still lives. Nobody ever saw that planet, and the thing that supports the theory of previously unknown large-size planets in Kuiper's belt are mysterious anomalies in Neptune's trajectory. The thing is that nothing else supports the theory of the existence of the "invisible planet". The size of the planet must be very big. And its gravitational field strong that it can affect Neptune's trajectory.  And the search for that mysterious planet is very long work. In some visions, the mysterious gravitational source is mentioned as the small black hole, but nobody understands why that black hole doesn't seem to interact.  In some other theories, Planet X is a glimpse of dark matter. And that thing makes it invisible. But there is one weakness. The dark matter object must have some kind of
Post a Comment
Read more

Nanoparticles are excellent tools for medicine transporters.

"Researchers have developed a new therapy for pancreatic cancer involving nanoparticles that stimulate immune responses and improve drug delivery. This innovative method has led to significant tumor reduction in mice and holds potential for treating other cancers. Credit: SciTechDaily.com" (ScitechDaily, New Nanoparticle Cancer Treatment Successfully Shrinks and Eliminates Pancreatic Tumors) Nanoparticles can carry medicines into wanted cells. The idea is that the same system that feeds those cells transports those nanoparticles into cells that need medicine. When a nanoparticle goes, into a cell, it releases the chemicals into the targeted cells. Because nanoparticles don't let medical molecules interact with a body that makes it possible to create new and more powerful cytostatics. Nanoparticles can transport things like ricin molecules into wanted cells.  Ricin is one of the most poisonous chemicals. That chemical is useful for next-generation cytostatics, if researche
Post a Comment
Read more