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GPS - Global Positioning
This page contains
information on GPS, the Global Positioning System. GPS is the main system
in use today to pinpoint your location anywhere on the globe.
GPS receivers are able to obtain their location by acquiring a signal from some of the 27 satellites that orbit the globe.
The GPS system, originally for use by the US military, is now available to all for location-finding and navigation.
With a GPS receiver, road warriors, pilots, ramblers, and nautical folk
can find out where they are, plan routes, help get on the wrong track
when lost, and generally make travelling a whole lot easier. A GPS receiver
makes use of signals received from the satellites, using three or more
to pinpoint your position. Obviously, you need line-of-sight for this
to work, so your receiver must be able to see the sky.
This page contain details of available units, with a special emphasis
on handheld and PDA navigation.
Please help us by telling us what you'd like to know about GPS, and what we can add to this page by contacting us
GPS Solutions
|
 If
you're looking for a dedicated handheld GPS navigation unit, either
with onboard mapping software, or just one that reports coordinates
and directions, Garmin is the most respected name in handheld
GPS navigation, and they have a wide range of receivers. If you're
ever planning to use a unit with a laptop or PDA, look for one with
a serial output socket. Pictured on the left is the Garmin GPS 12, an affordable 12 parallel channel GPS receiver that features fast satellite acquisition, great performance, housed in a rugged, waterproof case. Navigation features include a moving map plotter that displays waypoint names, symbols or comments, proximity waypoint alarms, average and maximum speed data and trip timers. Requires 4 x AA type batteries to give up to 24 hours performance. Includes Lat/Long, UTM, Ordnance Survey, Irish, Swiss, Swedish, German and Maidenhead Grids. If you're looking for a handheld GPS unit, try Maplin, or for a real bargain, try a second-hand unit on eBay.co.uk |
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If you're looking for a neat in-car solution, you could take the expensive route and get a fully-integrated solution OR go the option that makes financial sense - a small in-car box that has built-in GPS receiver, a touch screen, and the road maps of your choice. As well as being cheaper to fit, they can be removed from the car, for use in other cars or for security reasons. We're great fans of the TomTom range, which includes the GO and the ONE products. More on our dedicated TomTom page. We also covered portable SatNav in Show 4 of the Frequencycast podcast |
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A very small number of mobile phones come with a built-in GPS receiver. This means that you can use the phone either in-car or on foot to work out your position and perform route-planning and door-to-door navigation. Our personal favourite GPS-enabled mobile is the Microsoft Windows Mobile powered o2 XDA Orbit (also branded as the T-Mobile MDA Compact III). This is a high-spec mobile phone, GPS receiver and PDA in one package. It also has built-in Wi-fi and Bluetooth, and a 2 megapixel camera. Available from O2's online store (o2 XDA Orbit) or from T-Mobile (MDA Compact III), free on selected tariffs. Make sure your bundle includes free SatNav software, such as CoPilot or TomTom Navigator See our o2 XDA Orbit for more details If you're a fan of Nokia phones, there's the stunning Nokia N95 with GPS and a 5 meg camera. |
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Prices are around the £200 mark, but do vary - try Amazon , Maplin, and PC World to see who's running the best offers. For
details of TomTom Navigator, see our Navigator
page |
|
If you're looking to use GPS with a Pocket PC, Palm or laptop that has built-in Bluetooth, then a cable-free option such as the Socket, is the neatest option available. The Socket, pictured here is rechargeable, and runs with any NMEA compatible GPS program. Low power consumption allowing for trips up to 6 hours on a single charge. A little flashing blue light indicates that it's working.
For more on Bluetooth, see our Bluetooth page For information on navigating via a Pocket PC, see our Navigator page |
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A
snazzy plug-and-play solution for Pocket PCs. The Pretec CompactGPS
comes bundled with TomTom Citymaps which makes it ideal for use
with Pocket PCs. Pretec's CompactGPS-LP is in CompactFlash form-factor
which is a popular for both the new and old generation of Windows
powered Pocket or Handheld PCs. It is designed for easy integration
with a wide range of navigation software applications. Featuring
all view tracking capability, CompactGPS provides robust performance
in applications that require high vehicle dynamics and high signal
blockage operations. With 8-Channel architecture technology, Pretec's
CompactGPS card can provide rapid Time-First-Fix (TIFF) under all
start-up conditions for fast data acquisition and reacquisition.
Available
for under £120 from Amazon
|
|
Various
sleds are available for the Palm range of handheld devices. A common
option is the Magellan GPS companion, powered by a couple of small
AAA batteries (plus a 12 car charger lead). Some deals include mapping
software and some don't. If you own a Palm, this is the perfect
way to get handheld navigation that you can carry around with you.
The options are covered in issue 3 of Palmtop User magazine - well
worth a look!
A
Palm M515 costs around £308 from PC
World |
|
A product
designed for the Psion Series 5, 5mx, Series 7 and netBook, this
GPS unit has a magnetic base for the roof of your car, and uses
SiRF GPS technology. It's powered by your car's 12 volt cigarette
lighter, and integrates well with TomToms route planning software.
The connection to the Psion is via the RS-232 (PsiWin) port.
|
|
Ok, now this
really is the ultimate! Seen 24? In this compulsive action show, one
episode shows agent Jack Bauer using his palmtop to pinpoint his location
on a real-time satellite map, to spot his enemies from above. Sadly,
this isn't quite what Memory Map has to offer, but it's close... This
software contains aerial photos from regions of the UK that can be
downloaded to your Pocket PC. Coupled with GPS, you can get a pinpoint
location of where you are, superimposed over an aerial image. Really
useful stuff for hikers, bikers and pilots, who want a little more
than a moving map on their palmtop. Memory Map software and maps are available from www.getmapping.co.uk |
|
AutoRoute
is the mother of all mapping programs for the PC. AutoRoute provides truly bucketloads of information and features. Great for
mapping a route, anywhere in Europe, door-to-door by postcodes, it
can be set with your driving speeds, to avoid certain roads, go the
scenic route, zoom in and out, print maps and a whole stack more.
Amazingly detailed, with good step-by-step instructions for your navigator.
AutoRoute 2007 is available from Amazon for £39 (cheaper than on the high street). It includes the whole of Europe, and identifies restaurants, hotels, petrol stations, car parks, cash machines, train stations and pubs across Europe. |
This
bundle includes a GPS receiver terminated with a Pocket PC connector
(IPAQ, 
Frequently asked questions
| How much does GPS cost to use? | Top question - is GPS really free? Well, yes. Apart from the one-off cost of the GPS receiver (and any software you want to buy), there's no charge to use GPS. There's no 'service provider' as such, and there's no subscription fee for users of GPS hardware to make use of positioning data from GPS satellites. Satellite receivers detect signals from these satellites and use them to work out position anyone on the planet. These satellites were put into orbit by the US military some years back, and they subsequently opened up the system for non-military use |
| GPS Coverage | Positioning via GPS is possible just about anywhere in the world. To get your position, you need to be in line-of-sight of at tleast three of the orbiting satellites, which is possible all around the world. The presence of high buildings or other objects that obsure the visible line-of-sight to space will prevent reception of the GPS signal from satellites - heavy tree cover or poor weather conditions also can affect a receiver's ability to get a decent position lock. |
| Connecting to GPS | TomTom Navigator is supplied with GPS software as standard. This should support most Bluetooth or cable GPS receivers. |
GPS Links:
- See our Travel page for information on mobile traffic and travel news.
- For more on navigation from a handheld Pocket PC, Psion or Palm device, take a look at Palmtop User. Issue 3 of this full-colour magazine carries a 12 page summary of the options available.
- Looking
for GPS units, leads and adapters? Try
Maplin, Dabs.com or Amazon
. For a real bargain, take a look on eBay.co.uk
- GPS Tutorial - Help, advice and links on GPS
- Getmapping - If you're into maps and navigation, take a look at the overhead images, maps, digital photos and CDs that this mapping firm has to offer
- More details of mapping software for the Pocket PC can be found here
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a question, or need help? Ask in our forum
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