Technology developed at UCR will be used for high precision positioning in mobile devices, autonomous vehicles and related applications
Researchers at the University of California, Riverside have developed a new, more computationally efficient way to process data from the Global Positioning System (GPS), to enhance location accuracy from the meter-level down to a few centimeters.
The optimization will be used in the development of autonomous vehicles, improved aviation and naval navigation systems, and precision technologies. It will also enable users to access centimeter-level accuracy location data through their mobile phones and wearable technologies, without increasing the demand for processing power.
The research, led by Jay Farrell, professor and chair of electrical and computer engineering in UCR’s Bourns College of Engineering, was published recently in IEEE’s Transactions on Control Systems Technology. The approach involves reformulating a series of equations that are used to determine a GPS receiver’s position, resulting in reduced computational effort being required to attain centimeter accuracy.
First conceptualized in the early 1960s, GPS is a space-based navigation system that allows a receiver to compute its location and velocity by measuring the time it takes to receive radio signals from four or more overhead satellites. Due to various error sources, standard GPS yields position measurements accurate to approximately 10 meters.
Differential GPS (DGPS), which enhances the system through a network of fixed, ground-based reference stations, has improved accuracy to about one meter. But meter-level accuracy isn’t sufficient to support emerging technologies like autonomous vehicles, precision farming, and related applications.
“To fulfill both the automation and safety needs of driverless cars, some applications need to know not only which lane a car is in, but also where it is in that lane—and need to know it continuously at high rates and high bandwidth for the duration of the trip,” said Farrell, whose research focuses on developing advanced navigation and control methods for autonomous vehicles.
Farrell said these requirements can be achieved by combining GPS measurements with data from an inertial measurement unit (IMU) through an internal navigation system (INS). In the combined system, the GPS provides data to achieve high accuracy, while the IMU provides data to achieve high sample rates and high bandwidth continuously.
Achieving centimeter accuracy requires “GPS carrier phase integer ambiguity resolution.” Until now, combining GPS and IMU data to solve for the integers has been computationally expensive, limiting its use in real-world applications. The UCR team has changed that, developing a new approach that results in highly accurate positioning information with several orders of magnitude fewer computations.
“Achieving this level of accuracy with computational loads that are suitable for real-time applications on low-power processors will not only advance the capabilities of highly specialized navigation systems, like those used in driverless cars and precision agriculture, but it will also improve location services accessed through mobile phones and other personal devices, without increasing their cost,” Farrell said.
Learn more: GPS Tracking Down to the Centimeter
The Latest on: GPS tracking
via Google News
The Latest on: GPS tracking
- This GPS Tracking App Helps You Check on Your Family During Emergencieson March 23, 2020 at 3:04 pm
It is only more difficult as we face unforeseen emergency situations. But technology has answers. The GeoZilla Phone GPS Locator & Tracker App allows you to see the whole family on a map, with live ...
- GPS collars help wildlife researchers answer important questionson March 23, 2020 at 1:21 pm
This story originally featured on Outdoor Life. Two types of people are on the mountain during wildlife round-ups. Runners and huggers. I’m a hugger, an intense hugger, and I must hug until a runner ...
- GPS to track home quarantinedon March 23, 2020 at 11:13 am
Shrinivas [email protected] Mumbai After getting reports and complaints of home-quarantined people roaming outside, the Brihanmumbai Municipal ...
- Small, precise and affordable gyroscope for navigating without GPSon March 23, 2020 at 9:08 am
ANN ARBOR--A small, inexpensive and highly accurate gyroscope, developed at the University of Michigan, could help drones and autonomous cars stay on track without a GPS signal. "Our gyroscope is ...
- Tracking your best on-track resultson March 22, 2020 at 9:42 pm
Once unplugged from the vehicle, the app provides in-depth analysis, including previous track sessions and performance traces of the car going around the roadway, as well as replays using GPS mapping.
- The Gap Inc. (GPS): These Hedge Funds Caught Flat-Footedon March 22, 2020 at 5:27 pm
Coronavirus is probably the 1 concern in investors' minds right now. It should be. On February 27th we published an article with the title Recession is Imminent: We Need A Travel Ban NOW. We predicted ...
- Smartphones help track global virus spreadon March 22, 2020 at 5:28 am
It also relies on proximity sensing between phones, GPS data and the QR code scans at public places. A QR-code based tracking app was also developed by WeChat. The South Korean government deployed a ...
- COVID-19 May Be Pushing Sales for GPS Locating Serviceon March 20, 2020 at 5:27 am
That, says company founder Anish Godha, may be because Live Location Sharing offers a level of security in uncertain times by helping family members and friends to track each other's whereabouts. The ...
- Hong Kong is using tracker wristbands to geofence people under coronavirus quarantineon March 20, 2020 at 4:20 am
Once home, they are to walk around the apartment to calibrate the wristband. The wristband and the app use what is called geofencing technology, which is different from GPS location tracking, ...
- SJC orders new limits on GPS tracking of pretrial defendantson March 18, 2020 at 12:37 pm
Justice Frank Gaziano, writing for the court, said Norman’s state constitutional privacy rights were violated when he had to agree to wear the GPS tracker in order to be released on bail. GPS tracking ...
via Bing News