Sentences with phrase «gps receivers»

As you read this article, 24 satellites in six orbital paths are circling the earth twice a day, continuously transmitting coded positional and time information to GPS receivers, which pick up the signals and use the coded information to calculate a position in an earth co ‑ ordinate system.

There are many vehicle location companies that install GPS receivers in the vehicle and they can then keep track of the vehicle at all times.

The tide gauges combined with co-located GPS receivers are more accurate (real data) and produces a value around 1.3 to 1.8 mms / year of sea level rise over about 150 sites across the world.

With GPS receivers at high precision we can measure how far the continents move each year.

Four GPS receivers monitored ice flow from 55 to 171 km inland of the calving front at the center of the glacier (Scott and others, 2009).

Buildings are warm and snug, radios and GPS receivers ensure safety in bad weather, and fresh food is shipped in weekly.

Radiation experts will also be conducting checks on them to study their radiation levels, while some have special collars that are equipped with radiation sensors and GPS receivers to track down the radiation levels across the area.

Samsung has admitted that some of its most recent Android OS smartphones have problems with their GPS receivers, but has committed to fixing them.

Nowadays, built - in GPS receivers are far less expensive, have better reception, and are much more intuitive and agile.

However, the testing did show that LightSquared signals caused harmful interference to the majority of other tested general purpose GPS receivers.

Some of the key issues identified by industry include: cost and availability of upgrading GPS receivers; streamlined certification procedures; development of more low cost avionics; improving product availability; clarifying requirements; general aviation operator education; and ensuring repair station resources are available to complete installations.

As a staff member at Draper Laboratory, he worked on launcher guidance and GPS receivers.

Players» movements are tracked using GPS receivers and motion sensors and they are linked back to a central computer system by wireless Local Area Network.

A team lead by statistical physicist Tamás Vicsek of Eötvös University in Hungary outfitted a trained flock of 13 homing pigeons with tiny GPS receivers that could determine each individual bird's position every 0.2 seconds.

A year after their initial observations, Goodbred and his team returned to Polder 32 armed with GPS receivers and survey tools.

During a 3 - month - long, first - of - its - kind field study at a breeding colony in the Kerguelen Islands in the southern Indian Ocean, researchers taped tiny, 100 - gram GPS receivers between the wings of nesting birds, gathering 36 days» worth of flight data from 16 different birds.

Chip - scale atomic clocks keep time well enough for many applications requiring timing synchronization over short periods, such as GPS receivers.

Jeff Carlisle of LightSquared says it is the GPS receivers, not his company's base stations, that are at fault.

Meanwhile, over a billion GPS receivers are in use worldwide.

GPS receivers will be everywhere soon — in cars, boats, planes, backpacks, briefcases, purses, jackets and pants pockets.

In the past few years, consumers have grown used to the sight of handheld GPS receivers, which have been marketed as individual positioning devices for anglers, hunters, hikers, and cyclists — tools, in other words, for establishing one's individual bodily location.

Civilian handheld GPS receivers became available many years later, and I was finally able to tell my wife what I had been up to!

Deploying several GPS receivers at the same time could solve the problem in certain areas of application.

The scientists who deployed these GPS receivers expected to see both the slow, relentless motion of the planet's shell of tectonic plates and the relatively quick movements that earthquakes and volcanoes trigger.

Our studies would require a range of technologies, such as acoustic echo sounders, a magnetometer, subbottom acoustic profilers, a ground - penetrating radar, devices to recover sediment cores, an underwater television camera and a set of GPS receivers to enable study teams to track their position with a resolution of less than a meter.

Amazon uses trucks outfitted with special cameras and GPS receivers to take photographs — more than 20 million so far — of streets in more than 10 U.S. cities.

Armed with handheld GPS receivers, they can record the precise positions of the track and the trees.

The Chinese successfully tested a ground - launched satellite interceptor earlier this year, and prior to the 2003 invasion of Iraq, Iraqi forces tried to jam signals from U.S. navigation satellites by transmitting radio noise in an attempt to overwhelm GPS receivers.

Following the earthquake, an international team of scientists quickly deployed a series of GPS receivers to monitor any movements.

A constellation of more than two dozen GPS satellites broadcasts precise timing signals by radio to electronic GPS receivers which allow them to accurately determine their location (longitude, latitude, and altitude) in real time.

For this year's solar eclipse, they will observe radio signals using an existing network of GPS receivers in Missouri, and intersperse it with small, cheap GPS receivers that are similar to the kind in most phones.

To pinpoint its position precisely, the researchers stopped traffic in one lane of a 10 - kilometre long highway tunnel for a week to place GPS receivers on either side.

Earthscope makes use of 136 GPS receivers and an array of 400 portable seismometers deployed in the northeast United States to measure ground movement.

Data from land - based GPS receivers and tsunami gauge measurements have been used to model the motion and extent of the earthquake.

Simons et al. (p. 1421, published online 19 May) used land - based GPS receivers and tsunami gauge measurements to model the kinematics and extent of the earthquake, comparing it to past earthquakes in Japan and elsewhere.

Pankratius had to get around one problem: Typical mobile phones — while inexpensive, ubiquitous, and capable of acting as sensors — have cheap GPS receivers that are not capable of measuring the two frequencies.

He said, it was a space - based radio navigation system owned by the United States government and operated by the United States Air Force, explaining,» It is a global navigation satellite system that provides geo - location and time information to a GPS receiver anywhere on or near the Earth where there is an unobstructed line of sight to four or more GPS satellites.»

Furthermore, we figured that missions using SpaceCube 2.0 as a science data processor also could benefit from having a GPS receiver as a low - cost add - on,» he added.

Kneeling in the snow, Nuth connects solar panels to a GPS receiver anchored into the ice.

He envisions eventually deploying one GPS receiver for every 12 miles of coastline to track the strength of developing tsunamis.

The team compared that solution against location data gathered by NICER's onboard GPS receiver.

Or you can track the satellites with a GPS receiver.

By measuring the time it takes a signal to reach it, a GPS receiver calculates what is called the pseudo-range to the transmitting satellite.

The real value of GPS begins to emerge when you consider a GPS receiver's ability to compare where it is now with where it was moments or hours or days ago.

As well as a camera, it holds an accelerometer with gyroscope, a GPS receiver and a digital compass.

A gps receiver determines the distance from a satellite by measuring how long it takes a radio signal to reach it.

Measuring the distance from a gps receiver to one satellite places the receiver's location somewhere on the surface of an imaginary sphere that is centered on the satellite and has a radius equal to that distance.

But the satellites are equipped with clocks that are much more precise than the clock in a gps receiver.

With at least four satellites in view, and hence four pseudo-ranges — the minimum for determining accurate location plus time — a GPS receiver can compute its position using basic trigonometry.

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.