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Mapa continu de trànsit. Realtime road map, can show jams, roadworks, weather, cones, radars
catalunya  real  cataluña  catalonia  roads  delays  works  obras  retenciones  traffic  jams  conditions  transit  trànsit  radar 
3 days ago by piperh
Is the Pixel 4’s most revolutionary new feature just a huge waste of time? • BGR
Zach Epstein:
<p>Motion Sense radar has three main functions on the Pixel 4 and Pixel 4 XL. First, it allows you to perform swipe gestures in front of the phone to skip songs, dismiss calls, and snooze and alarm. That’s pretty nifty, but it can also easily be accomplished by activating the front-facing camera in each of those scenarios. Google’s radar chip uses slightly less power than the front-facing camera would, but the difference isn’t anywhere close to being significant enough to impact overall battery life.

Second, the Motion Sense radar chip detects presence. It knows if you’re close to your phone — within a foot or two — and it actives the Pixel 4’s always-on display when you’re nearby if that feature is enabled. If you walk away from your phone, it turns the always-on display off. Again, the amount of battery life this feature will save is insignificant thanks to OLED screen technology.

Finally, the radar chip in the Pixel 4 detects when you reach for the phone. If the phone is idle, it will turn the display on and ready face unlock. If an alarm is sounding or the phone is ringing, it will lower the volume a bit as you reach for the phone. The first function is just silly — like Apple, Google can use the accelerometer to detect when the phone is picked up and activated face unlock. It’ll be just as fast. As for quieting alerts, this is also a nifty feature but other phones use the accelerometer to detect a touch before quieting or muting. Is there any meaningful benefit in quieting the alert a fraction of a second sooner? No, there’s not.

As we said earlier, Project Soli is indeed very cool tech and we’ve never seen anything like it on a smartphone. Unfortunately, the reason we haven’t seen radar on a smartphone before could be the simple fact that it doesn’t enable any features that are truly new and worthwhile.</p>

Epstein points out the resemblance to Apple's 3D Touch - killed after four years, "longer than it took to create", because you could accomplish the same with a long press. <a href="">Like Project Ara</a>, I think this is solving a problem nobody has but which interviews well.
soli  radar  smartphone 
4 days ago by charlesarthur
More details of the Royal Navy’s Type 31 frigate emerge | Save the Royal Navy
The medium-range radar carried by Type 31 will be either the Thales NS110 (or possibly the newer, longer range NS200 incorporating GaN technology). This is a 3D AESA multi-mission S Band radar that will provide fire-control for Sea Ceptor as well as general surveillance. With a range of up to 110nm up to 70° elevation, it has dual-axis multi-beam processing which allows it to track multiple targets in cluttered littoral environments. The Radar is modular and can be tailored to customer requirements. The Artisan that equips the Type 23/26 has a similar range and works in the E/F Band but is mechanically scanned, unlike the electronically-steerable beam of the Thales AESA radar. On paper at least, the Type 31 will have a main radar that is superior to the Artisan on the Type 26
t31  radar  shipbuilding  procurement  royalnavy 
26 days ago by yorksranter
The SR-71 Blackbird's Predecessor Created "Plasma Stealth" By Burning Cesium-Laced Fuel - The Drive
The A-12 – the predecessor to the U.S. Air Force's iconic SR-71 Blackbird – was extremely high- and fast-flying, but also incorporated then-state-of-the-art features to reduce its radar cross-section. These included a combination of a stealthy overall shape and radar-evading structures, as well as the use of composites in its construction and the application of radar absorbing materials to its skin. A far less known, but still a key component of the Skunk Works plan to make the A-12 ...
history  radar  engineering  flight  military 
4 weeks ago by geetarista
It’s Time to Talk About A2/AD: Rethinking the Russian Military Challenge - War on the Rocks
In fact, the Russian term for A2/AD — restriction and denial of access and maneuver, (ogranicheniye i vospreshcheniye dostupa i manyuvra) — is just a ham-fisted transliteration of the Western term A2/AD because there is no Russian term for A2/AD...Indeed, if there is one thing the U.S. military could probably solve for, it is an opponent who chooses to sit behind layers of integrated air defenses...In general, concerns about being denied access to the theater or select areas are wildly overblown, while U.S. and allied militaries are insufficiently worried about whether Russia’s operational design and military strategy will supersede U.S. technological advantages and tactical superiority. There is no bubble to burst and no unifying Russian theory of area denial.
russia  a2ad  strategy  c4istar  rockets  radar  airdefence 
6 weeks ago by yorksranter

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