What is the distinction between GPS and UWB?

Key Takeaways

GPS is concentrated on monitoring and navigation on a world scale.
UWB is short-range, however affords nice location accuracy inside that scope.
UWB goes past location information to enhance issues like sensible locks and device-to-device file switch.

Individuals rightly complain that some flagship smartphones at the moment are as costly as laptops, however there may be some justification for it. Miniaturization does not come low cost, and telephones at the moment are loaded with wi-fi applied sciences like 5G, NFC, Bluetooth, and Wi-Fi. Two of them, GPS and ultra-wideband (UWB), could even appear to overlap — they’re each closely concerned in location monitoring.

You most likely have a broad sense of the variations between GPS and UWB. As we’ll clarify in a second although, they really have few issues in widespread, even in terms of location information.

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GPS vs UWB: Location monitoring

GPS stands for World Positioning System. It is purely for navigation and monitoring, and relies on satellites operated by the US Area Pressure. Certainly it was initially a US military-only platform, though it is since turn into accessible to civilians in lots of international locations. It is certainly one of a number of world navigation satellite tv for pc methods (GNSS) energetic across the planet.

When GPS is working in your cellphone or another system, it is truly receiving broadcasts from a number of satellites without delay, which assist to triangulate your place and sync time. It will not work in case your system does not have a transparent line-of-sight — which is why you lose sign round skyscrapers and different tall objects — however the excellent news is that there are over two dozen satellites in orbit, so you may typically pinpoint your location in locations the place mobile and Wi-Fi are non-existent.

UWB, against this, is a purely terrestrial expertise. Not solely that, it is low-power and short-range. Whereas it may possibly hypothetically function as much as a distance of 656 toes (about 200 meters), a extra reasonable restrict is 164 toes (roughly 50 meters). Sitting at dwelling, you most likely will not be monitoring something past the bounds of your entrance yard or parking area.

UWB is a short-range, purely terrestrial expertise.

Inside that vary, nevertheless, UWB is well superior to GPS. It has centimeter-level accuracy, whereas most smartphone GPS radios can solely slender issues down to a couple meters. UWB can inform whether or not your AirTag is below a sofa cushion, whereas GPS would solely be capable of work out what home or condominium you are in, at finest.

By itself, UWB cannot place your cellphone or another system on a map. As a substitute, one UWB-equipped merchandise sends out common pings, and one other receives these broadcasts, utilizing them to gauge a relative place. That is why you solely see an arrow and calculated distance whenever you use the Precision Finding characteristic on an iPhone.

UWB goes above and past

Whereas GPS is massively essential — it is proof for Einstein’s basic relativity, in actual fact — UWB serves functions past location monitoring. It is a main part of Apple and Android automotive keys, permitting some automobiles to unlock whenever you strategy and begin whenever you get in. Equally, some sensible door locks will quickly assist the expertise, saving you loads of hassle whenever you’re making an attempt to pull a motorcycle or groceries inside.

Much less attractive however nonetheless very important is improved device-to-device file switch. When it is current, UWB can help the precision of Apple’s AirDrop and Google’s Quick Share. Apple additionally makes use of UWB within the HomePod and HomePod mini, making it potential to shift media to and from iPhones. Google will probably be including a “Faucet to Forged” characteristic for the Pixel Tablet within the close to future.

There are additionally purposes for UWB in industrial settings and self-driving vehicles, however that is getting previous the scope of this information. Suffice it to say that GPS is not an enchancment over UWB, or vice versa — they’re separate wi-fi requirements with totally different objectives in thoughts.