usnaaajaxchap org

GPS tracking devices and conveyable GPS units are hot commodities at this time  and lots of web marketers and entrepreneurs are cashing in from this  trend. However, consistent use will finally take a heavy toll on these devices : hardware goes wrong,  damaged parts, software applications bugging down and a whole  lot of issues typical of electronic devices.

As a user or a businessman reselling GPS devices, it might be to your  benefit if you’re knowledgeable about Problems, issues and  related resolutions that users face-off with these devices. In this  case, the best source of info would be  those shared in the various forums and chat groups visited by  GPS device users.

You can pick up a little that would help you fix similar Problems  you are confronting with your units. Many of these  discussions are combinations of real experiences by users as well as shared  technical info and information from hardware and software  pros all that you need to make things work and solve your issues.

I have taken a look at 10 of the biggest GPS forums online and given a brief  description of them below. If you are selling GPS devices online then it would be a good idea to either get  involved and up your knowledge of GPS devices or point some customers towards these forums to help them  better understand the devices they use.

* GPS Discussion

Website : gpsdiscussion [dot] com
Members : 7826

One of the more conspicuous elements in the GPSDiscussion.com are the most  recent reports feeds from major OEM providers that would prove  relevant to owners of certain brands of GPS devices.  The forum is specified correctly with sections dedicated to certain  popular GPS OEM brands as well as a section on cellphone GPS.  Aside from that, the forum also has sections on : GPS POIs,  Waypoints, and Routes ; Mods and Firmware ; a For Sale and Wanted section ; and GPS device reviews.

* GPS Underground

Website : gpsunderground [dot] com / forum /
Members : 73,113
Active Members : 59,821

GPS Underground is a big forum on GPS-related topics, in spite  of the incontrovertible fact that it was just been hit by a hack  attack, reputedly from a previously trusted ex-member, destroying a  considerable number of posts and threads in the act. The community is  vibrant until now with a good share of active members against  total membership unlike any other forums where active members consists only a  small fraction of the total number of members.

The forum has a paid download section but the freely available  sections of the forum feature GPS navigation systems, OEM brands, maps, software, and info about unlocking GPS devices and updating maps.

* Groundspeak

Website : forums [dot] groundspeak [dot] com
Members : 662,002

This massive forum is a support service of Geocaching.com, which is the official  world GPS Cache Hunt Site. It aims to promote geocaching and GPS us e. The consultations include intensive  talks on geocaching, waymarking, baseline hunting, GPS usage, Wherigo,  and Groundspeak-related GPS gaming.

The forum is a handy resource of everything related to geocaching including geocaching  journeys, geocaching groups by region or state, and geocaching groups by country. Except  for that, there are general GPS-related subjects  but not as in depth and focused as they do for  geocaching.

* GPSReviews.net

Website: forums [dot] gpsreview [dot] net
Members: 13, 054

GPS Reviews is recognized as one of the top 100 tech blogs by  CNet and was mentioned In the Washington Post, Boston globe and other papers.  The forum is categorized into different subjects which include a discourse section for : general GPS systems ; tips, tricks, and mods ; GPS suggestions ; POI  file sharing ; discussion on OEM devices and other GPS brands ; and sections on GPS software, hardware and  smartphones support. Although the forum appears sufficient in terms  of subjects discussed, the layout of the forum itself is too narrow making the  threads appear cramped and compressed.

* Pocket GPS World

Website : pocketgpsworld [dot] com / modules [dot] php?name=Forums
Members : 336, 735

The internet site is divided into a forum for paid registered members as well as a public  access forum that are categorized by brands and other GPS devices. There is a separate  discussion on speed cameras utilised for geospotting as well as other d iscussion on other GPS related topics. The forum area however is narrow, as  sidebars for online adverts fill these sections and appears cluttered.

* GPS Forums

Website : gps-forums [dot] net
Members : two hundred and fifty

This quite new forum has only a few members but there were already 208,291 posts  discussed on more than 39,876 threads. The forum is focused on both OEM and  other GPS devices including a section of UK-specific GPS devices. There’s also a  fresh discussion section for GNSS or worldwide Navigation  Satellite Systems. The topics and classes appear limited though and this is assigned to the comparatively lower membership numbers.

* GPS Passion

Website: gpspassion [dot] com / forumsen /
Members: 106402

There are 53 separate forums that are specified under general subjects, hardware,  software GPS programming and Smartphone GPS. There’s a separate forum for GPS internet  stores. Unlike any other related forums, the layout for GPS Passion  involves certain graphics that appears unfit for a technology-based site. On top of  that, the site is also cluttered by a couple of adverts on the sidebars and  banners.

* GPS City

Website: forums [dot] gpscity [dot] com
Members : 7,464

While it may appear to have a smaller  member number than other forums on the list this site is an emerging power with comprehensive discussions on  used GPS units and threads on used RAM mounts.

* GPSInformation Net

Website : gpsinformation [dot] org / forum /
Members : 6914

GPS info is just a little and emerging forum but there  are already 6546 topics posted, which is already just about the same number of  total members. The forum has a good category system that is focused on general  consultations, hardware discussions, software  discussion, consultations on custom point of interest or POI,  geocaching, and an interesting build your own GPS  apparatus.

* GPS Software Hub

Website:gps-software-hub [dot] com / gps / forum.html
Members : 5428

GPS Software center is a comparatively tiny forum that provides info rmation on software and maps. There’s a classified section, other dialogues on fun  with GPS devices, and an up to date GPS section on brands. Aside from the ordinary categories common with other forums, GPS Software  center has a new section for choice videos and a video gallery.

* GPS FAQ

Website : forum [dot] gpsfaq [dot] com /topic [dot] aspx?title=devices
Members : not indicated

This discussion group is a support forum for the GPS FAQ site and is a little different  from others apropos the layout used. This forum makes use of tabs to  navigate through these diverse classes which show : GPS Systems, business  applications, GPS devices, technology and resource, GPS clobber, maps, mapping tools,  handheld products as well as talks on other topics. The forum is inclined to  answers topics only

There are several other forums available but these 10 can point you  to resources that can help you with your GPS needs .  The vital thing here is to study which forum would be well suited to your GPS devices as a  user, or your selection of products if you are a reseller.

Brawn Grand Prix is a Formula One team based in Brackley in south Northamptonshire, England which was formed out of the ashes of the Honda Racing F1 team in 6th March 2009. In December 2008 Honda revealed that they were going to pull the plug on their Formula One team in an attempt to save the Honda company money during the worsening global financial downturn.

 

This left one of the best funded and best equipped Formula One teams in the field in limbo while the management team attempted to find a buyer for the team and save 700 plus worker’s jobs at the teams Brackley HQ. Between December 2008 and February 2009 a number of possible buyers’ names were being thrown about by the media and team boss Nick Fry claimed the management was negotiating with a dozen possible buyers. The media reported that the team was close to being saved a number of times by parties including Prodrive, Mexican billionaire Carlos Slim and a ‘consortium of Brazilian investors’ however none of these came to fruition and it was soon looking likely that the only realistic option was a management buyout.

In Feburary 2009 it came to light that the Honda management were in negotiations with Richard Branson’s Virgin Group and they looked set to buy the team however speculation ended when Richard Branson revealed he was interested in F1 but only once certain conditions were met, mainly that costs were reduced and that the sport was championing green technology.

On the 6th March 2009 the Honda Motor Company and the former Honda Racing F1 Team management announced that the team had been saved buy a management buyout from technical director Ross Brawn and the new team Brawn GP was born. The team went on to test its car for the first time in an official test at Circuit de Cataluña, Barcelona in March where they were they performed very well, setting an unofficial lap record in the process. The team was accused of running the car underweight in an attempt to attract sponsors to help fund the fledgling team however these claims were denied by the team. Others accused the team along with rivals Williams and Toyota of having an illegal rear diffuser under the new 2009 regulations, claims which were also denied by all three teams. Whatever accusations were thrown at the team, nobody could deny that it looks like Brawn GP had a very competitive car that could turn out to be one of the fastest come the season opening race in Australia.

Roll on the last weekend in March and it was time for the start of the 2009 Formula One season, throughout the weekend Brawn GP showed that it’s pace in pre-season testing was no bluff and in-fact they had one of the best cars on the grid. They proved this by first locking out the front row in qualifying and then going on to secure a historic 1-2 finish in the race, which was only the third time in history that a brand new team had managed it.

Global Positioning System

The Global Positioning System (GPS) is the only fully functional Global Navigation Satellite System (GNSS). Utilizing a constellation of at least 24 medium Earth orbit satellites that transmit precise microwave signals, the system enables a GPS receiver to determine its location, speed/direction, and time.

Developed by the United States Department of Defense, it is officially named NAVSTAR GPS (Contrary to popular belief, NAVSTAR is not an acronym, but simply a name given by Mr. John Walsh, a key decision maker when it came to the budget for the GPS program[1]). The satellite constellation is managed by the United States Air Force 50th Space Wing. The cost of maintaining the system is approximately US0 million per year,[2] including the replacement of aging satellites, and research and development. Despite these costs, GPS is free for civilian use as a public good.

GPS has become a widely used aid to navigation worldwide, and a useful tool for map-making, land surveying, commerce, and scientific uses. GPS also provides a precise time reference used in many applications including scientific study of earthquakes, and synchronization of telecommunications networks.

Simplified method of operation

A GPS receiver calculates its position by measuring the distance between itself and three or more GPS satellites. Measuring the time delay between transmission and reception of each GPS microwave signal gives the distance to each satellite, since the signal travels at a known speed – the speed of light. These signals also carry information about the satellites’ location and general system health (known as almanac and ephemeris data). By determining the position of, and distance to, at least three satellites, the receiver can compute its position using trilateration.[3] Receivers typically do not have perfectly accurate clocks and therefore track one or more additional satellites, using their atomic clocks to correct the receiver’s own clock error.

[edit] Technical description

Unlaunched GPS satellite on display at the San Diego Aerospace museum

Unlaunched GPS satellite on display at the San Diego Aerospace museum

[edit] System segmentation

The current GPS consists of three major segments. These are the space segment (SS), a control segment (CS), and a user segment (US).[4]

[edit] Space segment

The space segment (SS) is composed of the orbiting GPS satellites, or Space Vehicles (SV) in GPS parlance. The GPS design calls for 24 SVs to be distributed equally among six circular orbital planes.[5] The orbital planes are centered on the Earth, not rotating with respect to the distant stars.[6] The six planes have approximately 55° inclination (tilt relative to Earth’s equator) and are separated by 60° right ascension of the ascending node (angle along the equator from a reference point to the orbit’s intersection).[2]

Orbiting at an altitude of approximately 20,200 kilometers (12,600 miles or 10,900 nautical miles; orbital radius of 26,600 km (16,500 mi or 14,400 NM)), each SV makes two complete orbits each sidereal day, so it passes over the same location on Earth once each day. The orbits are arranged so that at least six satellites are always within line of sight from almost everywhere on Earth’s surface.[7]

As of September 2007, there are 31 actively broadcasting satellites in the GPS constellation. The additional satellites improve the precision of GPS receiver calculations by providing redundant measurements. With the increased number of satellites, the constellation was changed to a nonuniform arrangement. Such an arrangement was shown to improve reliability and availability of the system, relative to a uniform system, when multiple satellites fail.[8]

[edit] Control segment

The flight paths of the satellites are tracked by US Air Force monitoring stations in Hawaii, Kwajalein, Ascension Island, Diego Garcia, and Colorado Springs, Colorado, along with monitor stations operated by the National Geospatial-Intelligence Agency (NGA).[9] The tracking information is sent to the Air Force Space Command’s master control station at Schriever Air Force Base in Colorado Springs, which is operated by the 2d Space Operations Squadron (2 SOPS) of the United States Air Force (USAF). 2 SOPS contacts each GPS satellite regularly with a navigational update (using the ground antennas at Ascension Island, Diego Garcia, Kwajalein, and Colorado Springs). These updates synchronize the atomic clocks on board the satellites to within one microsecond and adjust the ephemeris of each satellite’s internal orbital model. The updates are created by a Kalman filter which uses inputs from the ground monitoring stations, space weather information, and various other inputs.[10]

GPS receivers come in a variety of formats, from devices integrated into cars, phones, and watches, to dedicated devices such as those shown here from manufacturers Trimble, Garmin and Leica (left to right).

GPS receivers come in a variety of formats, from devices integrated into cars, phones, and watches, to dedicated devices such as those shown here from manufacturers Trimble, Garmin and Leica (left to right).

[edit] User segment

The user’s GPS receiver is the user segment (US) of the GPS system. In general, GPS receivers are composed of an antenna, tuned to the frequencies transmitted by the satellites, receiver-processors, and a highly-stable clock (often a crystal oscillator). They may also include a display for providing location and speed information to the user. A receiver is often described by its number of channels: this signifies how many satellites it can monitor simultaneously. Originally limited to four or five, this has progressively increased over the years so that, as of 2006, receivers typically have between twelve and twenty channels.

A typical OEM GPS receiver module, based on the SiRF Star III chipset, measuring 15×17 mm, and used in many products.

A typical OEM GPS receiver module, based on the SiRF Star III chipset, measuring 15×17 mm, and used in many products.

GPS receivers may include an input for differential corrections, using the RTCM SC-104 format. This is typically in the form of a RS-232 port at 4,800 bit/s speed. Data are actually sent at a much lower rate, which limits the accuracy of the signal sent using RTCM. Receivers with internal DGPS receivers can outperform those using external RTCM data. As of 2006, even low-cost units commonly include Wide Area Augmentation System (WAAS) receivers.

Many GPS receivers can relay position data to a PC or other device using the NMEA 0183 protocol. NMEA 2000[11] is a newer and less widely adopted protocol. Both are proprietary and controlled by the US-based National Marine Electronics Association. References to the NMEA protocols have been compiled from public records, allowing open source tools like gpsd to read the protocol without violating intellectual property laws. Other proprietary protocols exist as well, such as the SiRF and MTK protocols. Receivers can interface with other devices using methods including a serial connection, USB or Bluetooth.

[edit] Navigation signals

Main article: GPS signals

GPS broadcast signal

GPS broadcast signal

Each GPS satellite continuously broadcasts a Navigation Message at 50 bit/s giving the time-of-day, GPS week number and satellite health information (all transmitted in the first part of the message), an ephemeris (transmitted in the second part of the message) and an almanac (later part of the message). The ephemeris data gives the satellite’s own precise orbit and is output over 18 seconds, repeating every 30 seconds. The ephemeris is updated every 2 hours and is generally valid for 4 hours, with provisions for 6 hour time-outs. The time needed to acquire the ephemeris is becoming a significant element of the delay to first position fix, because, as the hardware becomes more capable, the time to lock onto the satellite signals shrinks, but the ephemeris data requires 30 seconds (worst case) before it is received, due to the low data transmission rate. The almanac consists of coarse orbit and status information for each satellite in the constellation and takes 12 seconds for each satellite present, with information for a new satellite being transmitted every 30 seconds (15.5 minutes for 31 satellites). The purpose of the data is to assist in the acquisition of satellites at power-up by allowing the receiver to generate a list of visible satellites based on stored position and time, while an ephemeris from each satellite is needed to compute position fixes using that satellite. In older hardware, lack of an almanac in a new receiver would cause long delays before providing a valid position, because the search for each satellite was a slow process. Advances in hardware have made the acquisition process much faster, so not having an almanac is no longer an issue. An important thing to note about navigation data is that each satellite transmits only its own ephemeris, but transmits an almanac for all satellites.

Each satellite transmits its navigation message with at least two distinct spread spectrum codes: the Coarse / Acquisition (C/A) code, which is freely available to the public, and the Precise (P) code, which is usually encrypted and reserved for military applications. The C/A code is a 1,023 chip pseudo-random (PRN) code at 1.023 million chips/sec so that it repeats every millisecond.

With all the technology available to us, there’s no excuse for getting the family lost in an unfamiliar place or stuck in hours of traffic on holidays. GPS is a great devise for in-car use and it’s just as useful when on foot plus it’s a great way to get around a foreign city too. With GPS Rental services this device became even more available and useful. Drivers can find their way through city streets; long reserve trekkers and hikers use the technology to navigate unfamiliar terrain. GPS devices are even more helpful for planning a trip, whether it’s a cross-country trek or a hopscotch tour of your routine stops.

But GPS not only gets you from point A to point B with minimum hassle, it also makes your holiday come alive; with ways to plan your itinerary, track down the best restaurants, and make your holiday more enjoyable.

Here’s a few handy GPS travel tips to help you get the most out of the holiday and avoid the travel woes.

GPS TIPS

1. If you intend to rely on your GPS unit, take time to learn it before needing it. Get the manual out, work with setting waypoints and determining position. This will save you time on the road and prevent you from loading incorrect information or deleting valuable information by mistake.

2. Ensure that you install the maps prior to travel. This will enable you to browse and test the maps prior to embarking on your trip. Make sure you are familiar with the route calculation settings of your device.

3. Power is an issue. All GPS models will need to be recharged. Make sure you have enough batteries for the trip or pack a universal adapter in your luggage. Battery life of GPS devices vary, so it is important to have a cigarette lighter charger as you do not want to run out of juice when you are on the road.

4. Avoid leaving GPS device mounted on the windshield in a hot car for long periods of time. It is also a good way to prevent the device from being stolen, since even leaving the window screen mount in view is an advertisement that a GPS device may be in the car.

5. Most car navigation systems include an extensive POI database including restaurants along the interstate. Choose the cuisine you want and your GPS will display a list of results by proximity. Filter out only those along your route and your forward seeking food radar will update faster.

6. Some GPS devices also contain useful travel advice which can be very helpful if you are unfamiliar with road rules in other countries. For example, some device menus contain guides for multiple countries and cover local road rules, public holidays, accommodation advice and more.

7. When navigating to a place, it may be easier to search for a place by name rather than address. For example if you wish to visit the British Museum in London you can find it listed under museums as a point of interest and be able to navigate there without knowing the exact address.

8. And most importantly, make sure you dust off your GPS-knowledge and get the upper hand on your pending trip before you embark. Just be smart and make good use of your GPS.

The crying needs for successful and enjoyable holiday travel – getting to the destination, and providing some entertaining distraction along the way – are now answered with the help of heaven-sent, handy GPS-based navigation systems. Whether you are traveling cross-country or taking a quick weekend trip, having a GPS device will make your journey easier, faster and much more fun.

In recent years, GPS devices have begun to mature from barebones units to more feature-packed devices that also let you play music and even make calls from your car. Both GPS- systems and satellite radios are becoming hot add-ons for new cars and rentals, and there are a variety of interesting and ever more affordable options to upgrade your existing vehicle. Today’s systems work well with small and built-in GPS antennas providing visual and voice prompts for upcoming turns, and dynamically adjusting when you take a detour. These systems can normally store at least major highway maps for the entire regions plus detailed maps for a specific region, as well as associated points of interest, addresses and even phone numbers for businesses, gas stations, ATMs, hotels, restaurants, and attractions.

There’s so much to see and do when you are on vacation that you want to make sure you don’t miss a thing while driving or hiking. It’s especially true when you’re taking a tour around national parks and other scenic vistas – that’s the reason enough to be looking out the windshield and not at the map. Now you have the power and security to make any trip an effortless and memorable one whether you’re working, sightseeing or a little of both. You will never get lost again or miss out on the points of interest thanks to GPS. Whether in your own car, a rental car or RV Rental, integrating the in-car entertainment like an MP3 player and tour guide content will allow you to travel at your own pace; visiting the places you want to see. With multilingual turn-by-turn visual guidance, voice prompt navigation and easy to read graphics, traveling from place to place has never been easier and so visitor-friendly. It also gives you suggested directions, so you don’t get lost, for the most popular driving routes as well and invite you to get off the beaten path to take the roads less traveled. You will get to see more, hear more, laugh more and experience more than you ever could have on your own.

When vacationing in unfamiliar cities or countries GPS also comes handy and helps you enjoy your stay and remain focused on the business at hand. Now you can navigate to different places with your GPS specific for the regions you are traveling in. GPS can also help you avoid being scammed by local taxi drivers. With a GPS you know if a “short cut” is really what it is or if the taxi driver is just trying to rip you off by taking you on a longer route. Your visit will be more fun with a GPS since it allows you to enjoy your experience without worrying so much about how to get around.

GPS-based navigation systems are real indispensable additions to your travel gear. Just grab a GPS and enjoy your trip!