editor's blog
Subscribe Now

Collocated Location Technology

MWC_PR_IMG_Wearables-cr_200.jpg

Location services used to mean one thing: applications that leveraged GPS and other global navigation satellite systems (GNSS) to fix your location and then… do stuff with that information. Of course, GPS isn’t reliable indoors, so there were holes in the system, but, for its time, it was pretty spiffy.

Meanwhile, in a separate corner of the technology world, MEMS hit high gear, and inertial sensors allowed some indoor navigation (better with expensive chips; so-so with commercial grade; greatly enhanced by good sensor fusion). As we’ve seen, the two work together, each standing in where the other was weak, and bolstered by the use of indoor networks like WiFi and Bluetooth as further triangulation tools.

But, despite their mutual affinity, GNSS and inertial systems remained distinct. One talks to satellites; the other uses MEMS. It was up to systems integrators to bring them together.

Well, it looks like that’s changed. Broadcom has announced a combo GNSS/sensor hub chip. Yes, it’s not just an inertial system; it’s a more generic sensor hub. But the obvious application is to plug in some accelerometers and gyros, perhaps augmented by a magnetometer, and get them dancing with the GPS.

Of course, part of the story is power reduction, afforded by the microcontroller in the sensor hub as it offloads a phone application processor, but that’s the case for any hub. What’s different here is that GNSS becomes, in essence, just another sensor. Which is kind of what it is, right? A satellite sensor?

They can also do indoor network triangulation… Think of it as a WiFi (et al) sensor.

You can get more details in their announcement.

 

Image courtesy Broadcom

Leave a Reply

featured blogs
Feb 27, 2021
New Edge Rate High Speed Connector Set Is Micro, Rugged Years ago, while hiking the Colorado River Trail in Rocky Mountain National Park with my two sons, the older one found a really nice Swiss Army Knife. By “really nice” I mean it was one of those big knives wi...
Feb 26, 2021
OMG! Three 32-bit processor cores each running at 300 MHz, each with its own floating-point unit (FPU), and each with more memory than you than throw a stick at!...
Feb 26, 2021
In the SPECTRE 20.1 base release, we released Spectre® XDP-HB as part of the new Spectre X-RF simulation technology. Spectre XDP-HB uses a highly distributed multi-machine multi-core simulation... [[ Click on the title to access the full blog on the Cadence Community si...

featured video

Designing your own Processor with ASIP Designer

Sponsored by Synopsys

Designing your own processor is time-consuming and resource intensive, and it used to be limited to a few experts. But Synopsys’ ASIP Designer tool allows you to design your own specialized processor within your deadline and budget. Watch this video to learn more.

Click here for more information

featured paper

Authenticating Remote Automotive Peripherals Using GMSL Tunneling

Sponsored by Maxim Integrated

Authentication can be applied to automotive environments to protect peripheral components from third-party counterfeits. This application note details how to implement automotive authentication with the use of gigabit multimedia serial link (GMSL).

Click here to download the whitepaper

featured chalk talk

UWB: Because Location Matters

Sponsored by Mouser Electronics and Qorvo

While technologies like GPS, WiFi, and Bluetooth all offer various types of location services, none of them are well-suited to providing accurate, indoor/outdoor, low-power, real-time, 3D location data for edge and endpoint devices. In this episode of Chalk Talk, Amelia Dalton chats with Mickael Viot from Qorvo about ultra-wideband (UWB) technology, and how it can revolutionize a wide range of applications.

Click here for more information about Qorvo Ultra-Wideband (UWB) Technology