【DARPA:不需信号就能实时追踪!】

【DARPA:不需信号就能实时追踪!】最新的定位技术DARPA无需受信号问题所困就能实现实时追踪,且较GPS更稳定灵活。它采用全新的技术能实现实时位置追踪,并利用自校准陀螺仪、加速器和计时器实现位置追踪而不依赖信号或外部资源。更酷的是研究人员正设计一种信号捕捉器,诸如从电视甚至雷击中捕捉信号以协助位置追踪。

When your location marker on Google Maps is pinging all over the place, it's usually due to temperamental GPS signal. DARPA thinks this isn't cutting it anymore, and is developing a "radically" new tech that will offer real-time position tracking -- something that'll work despite blind spots or jamming efforts. DARPA expects this will offer a huge boon to the US Military over, well, everyone else. Beyond war, the new location tech will be good for some much more, and will be far more flexible than GPS. Just like how we now use that once-military network for navigation and location services, new tech is verylikely drip down to muggles like us too.

As DARPA puts it in its paper: "The need to be able to operate effectively in areas where GPS is inaccessible, unreliable or potentially denied by adversaries has created a demand for alternative precision timing and navigation capabilities." It's also working on self-calibrating gyroscopes and accelerometers and clocks that that will be able to track your position without relying on a wireless signal or other external sources: if your smart watch of the future knows where you start, and you move 350 meters north-west, for example, it'll know where you are without having to double-check with the internet, or a satellite.

Perhaps even cooler, researchers are crafting sensors that pick up "signals of opportunity" such as television, radio and apparently even lightning, to assist in location tracking. It's called ASPN (All Source Positioning and Navigation) and will particularly help in dense jungles (concrete or tropical) where GPS signals can often be obfuscated. This would also reduce power consumption for navi devices -- apparently one of DARPA's broad aims for the technology.


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