MMS providers use this technology experts amalgam of technologies to offer its customers mobile laser scanning services that produce a cloud of X, Y, Z point in the state plane coordinate systems or similar. Here is an overview of the different technologies used and how they unite to produce an accurate description in 3-D of the areas surveyed:

Determining the location – GPS

Mobile Mapping Systems (MMS) using the Global Positioning System (GPS) to determine where we are at any given time. The accuracy of raw GPS data is not suitable for our purposes so we use one of the three technologies to correct the raw position information. If we have a checkpoint near known work, which can set up a GPS base station on the item and use measurements of the position of the GPS satellites to determine the difference between the actual measured position and then every second . This error or “differential” is transmitted by radio to the mobile scanner and GPS data collected by the scanner to correct every second. This method is called real time kinematic, or RTK. If no checkpoint is available, we can establish one and, using industry standard tools to determine your exact location at a later time. Using RTK, we can establish our position within ± 1 inch of East and Northing and ± 2 inches tall.

The second method we use to determine our position is similar to the RTK, it is called Virtual Reference Station or VRS. In this method, we subscribe to a service that has a number of base stations (VRS Network), created in a given area. We use the wireless data link for GPS corrections of this network and GPS data in the mobile scanner is fixed as the RTK method. The accuracy of this system is comparable to that of RTK.

The third method we use to determine the position of the uses OmniStar ®, a private satellite-based correction. It provides corrections similar to that of VRS, except it uses a satellite receiver to receive data instead of a wireless link. OmniStar ® accuracy is slightly lower than RTK or VRS ± 4 inches. We can mix and match these technologies when needed – for example, we use RTK to exploration, but to define the control point using the Omnistar ® system to eliminate the need to determine the position of the control point later.

How to measure the changes of direction – Inertial Measurement Unit

Using our GPS technology is measured accurately our position about once per second. However, we are constantly changing direction. At 5 miles per hour, traveled about 7 meters per second. During that second, we can change our direction of travel (departure) of many degrees. Inertial measurement unit (IMU) measures changes in the scanner of the game 100 times per second. The IMU accuracy is ± 0.1 degrees (~ 0.17 feet to 100 feet away). The position of the mobile scanner automatically restarts when receiving a new GPS position “fix” every second so any small error in the IMU, it is allowed to accumulate.

How to collect the data of Surveying – The laser module

Thanks to the GPS and IMU technology, we can track the exact position of the mobile scanner at each point in time. The GPS and IMU are mounted within the scanner cover. Outside of housing, we have a rotating laser module. This scanner has a laser distance measuring mounted at right angles to the direction of the vehicle or vessel. The laser measures 36,000 points per second, turning at 10 rpm and has a range of up to 450 feet. The accuracy of the measurement of distance is ~ ± 2 inches. The distance between points is controlled by laser RPM and vehicle speed. Usually generate a cloud of points with the points of ~ 0.5 to 2 feet away. Data can be diluted to reduce the size of data sets if desired. If better data coverage is necessary, adjustments to the control software can be changed. The mobile scanner can explore all that is passed in front of top, bottom or sides of the scanner.

How to correct an irregular terrain – Pitch and Roll sensors

The mobile scanner is mounted on a vehicle or vessel. In a perfect world, soil or water body would be perfectly horizontal. Since this is obviously not the case, correct the data by measuring the pitch (angle up or down) and roll (left or right angle) to the browser using pitch and roll sensors. These instruments measured the field and shooting 100 times per second with an accuracy of ± 0.01 degrees (~ 0.02 feet to a distance of 100 feet) Because these instruments measure the attitude of the mobile scanner so often, that can travel on rough terrain or rough sea at a reasonable speed, without seriously affecting the accuracy of the data.

Summary

Scanning LiDAR or mobile phone, because sometimes called can provide unprecedented efficiency and accuracy in many studio applications. Whether you need to measure the value of stocks, make a detailed planning of the mines, as beach erosion, encroachment of vegetation to determine the utility right of ways or to solve a number of problems or engineering study, Mobile Lidar can provide the solution to their problems.

Sometimes free software downloads are available in versions with limited functionality, disabling certain features and is reserved as a test version based on the application of large-scale software GPS. Therefore, the availability of GPS free downloadable software allows you to use the software for a trial period before they actually are buying. This should help you make a wise decision to purchase your GPS.

The main purpose of the GPS software is to improve and expand services in GPS. Not only that. Helps you to customize certain options and to develop the device, making them fit your needs specifically as applications geocaching, hiking, sailing or fishing. GPS software applications fall into two main categories. The first category includes all the software designed for navigation with route calculation and directions. This accelerates vector map functions based on cars, boats or even airplanes. The other category includes all the software designed to track shipping, usually with a map image at the bottom to show pre-programmed routes, basically mapped out the route you plan to take.

GPS software applications are developed to strengthen or improve the capabilities of a common GPS receiver. Allow real time tracking, saving route, route planning, the importation of other similar platforms like Google Earth for mapping and enhanced display, alert settings and support for compatible devices.

To improve the capacity of digital mapping and travel more efficient roads and highways, can improve visualization and the display of your GPS device with free software like the constructor 3Droute, and BSGP AddMagMap that support static maps and tile OpenStreetMap.

To find cache, freebies like clusters of cache, cache and CacheMagnet Logger allows you to find your way through cache, and finding geocaches groups together with ease. This software provides easier management benchmark geocaching, which certainly adds a great advantage for next treasure hunt.

Free software download geocache geocache includes open areas, geocaching 3.0 and GeoPDF toolbar. These utilities allow you to record each cache has been found and manage the handling geospatial mapping applications and map updates.

Google Maps software is perhaps the most popular free program you can find for their GPS receivers. The GoogleEarthTweaker, Google Map GPS Cell Phone Tracker, Google maps with GPS Tracker and GPS devices Goops provides the perfect companion for your drives occasionally.

Free GPS mapping software includes MAPC2MAPC, MapExtract, MapKon, Map Maker, the man of Map, Map Monkey, MapSendLite and MapSend Lite. These applications improve your viewing and displaying digital maps calibrated files. Also contribute to the transformation and conversion of tracks, routes and points of interest. For novice users, these mapping services will be useful.

Now, for real navigation help, free download software, as Navit, mapplet Nav’it, NDWGeoTag, NMEA compass, generator and NMEAgent NMEA GPS receivers can be skinnable compass, and have a separate application to real-time applications GPS to Google Earth.

There are websites that offer different categories of free GPS software to help owners of GPS, the best of your mobile GPS. Often these sites are fair interpretations of the advantages and disadvantages of the program, which should help determine what type of GPS software you need.

The mobile phone GPS tracking can be in the form of hardware or software. Most phones today come with the hardware version. This is already pre-installed with maps and GPS with which people can find on the map. For example, if you locate your child, you only need to turn in their cell phone with the same function and be able to locate her son. However, the hardware-based GPS can be turned off at will. This means that if your child has decided to disable the function, he or she found on the GPS.

The cell phone software based on GPS location much better. Since this is a software can not be altered in any way. This software is also known as the spy cell phone. Is called a spy because the phone owner does not know the software is there, because it works with discretion. Once installed on any phone, begins to collect information about phone calls, text messages, emails and so on. It keeps records of all calls and records. The recorded conversations and messages will be sent to a special online address. Whenever you need information, you can always log on with your password and get more details.

Not only be able to hear the recorded conversations, texts and emails, the software turns the phone into a tracking device. If you want to locate the user at any time, simply connect to your computer, check with Google Maps and the person will be there. If you want to know where your child or your spouse at any time, so far the mobile phone GPS locator software is on your phone, you will easily see your current Mobile GPS position.

This software can be downloaded online. It auto updates itself every time there is an update. It is best to seek professional to install spyware. I know there are some free online, but are unsure in any way. In addition, they may damage the phone in which they are installed. Before you install any, read reviews and make sure it’s worth the money you are paying.

Human history is described in relation to events that alter its course. Terms such as “pre-civil war”, “BC” or “before the Wright brothers” are used as a pin in time to provide context and understanding of a story. These turning points are often moments in time when the ingenuity of man paves the way for a revolution in thought and industry. An example is the field of medicine before and after the introduction of X-ray machine. Before the invention of the tools available to give an accurate and useful includes little more than a tongue depressor and a stethoscope. But at night, an average doctor with the expectation of buying an X-ray machine became the best diagnosis of broken bones, sprains and disease. And that he had found a better tool. At night, the medical profession found a new direction.

The implications of 3D laser scanning and mobile maps are very similar. Taken to its obvious end, humanity will realize an accurate and updated maps of the entire surface of the Earth in a cloud of points that can be viewed by any child in a portable gaming device in the back seat of minivan. Until then, keep learning more each day about his extraordinary ability to describe in space and in real time to what has been limited to words and images 2D.

Using 3D mobile navigation and mapping, engineering and surveying fields have found a new direction and better. In difficult economic times advances in technology can be exploited. When times get tough companies tend to act in one of two ways: freeze spending to hang in the capital and personnel, or invest in smarter ways of doing business so when the economy recovers, land has been taken rather than just taken place.

This new technology has many names: the laser mapping, mobile Lidar, mobile mapping, 3D laser scanners, mobile scanning. Whatever you decide to call it, allowing the collection of huge amounts of data with accuracy and speed that make it difficult for a surveyor or engineer to avoid drooling. Right now, better than anyone, understand the consequences, safer workplaces, reduced labor, and unprecedented amounts of data more accurate.

Although 3D mobile mapping is a key element in all sectors, is only a matter of time before the construction, mining, surveying and civil industries called 3D mobile mapping procedure standard operating. Regulations are being passed around the country can not be met in addition to finding new ways to securely generate faster and more accurate data. Whether motivated by respect, love for the planet or ambition, each industry already has its early adopters. utilities are using GIS, waste management sites to determine compression factors, mining operations for the calculation of volumes of reserves and inventory, and inspectors to locate and erosion control. These data are made available to end users through direct purchase of mobile equipment and the scanning software, or through service providers who deliver information in a useful format for clients.

I heard that you do not lose vision. Business testimony to this truth. Everyone is looking for a change of game and Mobile Mapping System that is, no doubt. So challenge your mind, stay informed, keep in mind the impressive possibilities of mobile 3D mapping and move on.

Mobile phone service also know the location of the LBS – Location Based Services. You get the location information (latitude and longitude) of mobile terminal users through the network of mobile telecommunications operators as GPS Base Station.

Backed by the platform of electronic maps, the value added service provided to users. For example, China Mobile M-zone users’ location offers research services.

What is the first substantial work? The phone will win different TOA (Time of Arrival) by measuring the downlink pilot signal from different base stations. By using trigonometry formula, usually can calculate the location of phones based on the measurement result and base station coordinates.

As for the current estimation algorithm, the location information of more than three stations should be considered. Therefore, the algorithm is much more complicated. In general, the more the stations are measured, the greater the accuracy. And the location capability is greatly improved.

At present, the location of mobile service is limited to positioning. You can provide users with information about the market and a restaurant surrounded by electronic mapping service. It can not provide air navigation services.

GPS-Global Positioning System consists of three sections: square constellation of GPS satellites, ground control system and the GPS receiver. What is the basic principle of GPS position? The satellite ephemeris parameter sent and messages in constant time.

After receiving the signal, the GPS receiver will resolve the location of the receiver based on the formula of trigonometry. 2D positioning can be achieved with three satellites. The 3D position can be achieved with four satellites. The instructions on movement and speed can be calculated based on updated information from the receiver.

There are 24 GPS navigation satellites in six orbital diffusion. There are four satellites in satellite or at least eleven more on the horizon at any time at all. So GPS tracking is finely guaranteed. The GPS receiver is working to capture and deal with the satellite signal. The real-time 3D position and velocity can be calculated.

The mobile position is strongly influenced by the environmental factor is based on the existence of mobile communications base station. In the suburbs and rural areas, rang placement is 10 to 20 meters. Since there are many tall buildings in cities, the signal is difficult to convey. The range is 100 to 200 meters. The positioning response time is about 3-6.

The monitoring system is out of the question in the area where there can be no mobile signal received. However, as the GPS Base Station is covered by at least four satellites at any time, the signal is guaranteed. As the satellites are dominant, the long-range accuracy is a few meters to several meters.