GIS K300

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PJK-300

PJK-300 is the most cost-effective dual-frequency network RTK rover. PJK-300 solution includes the new GIS rugged GNSS receiver running Windows Mobile? 6.5 operating system, the comprehensive GIS field software and the new GIS (L1/L2 GNSS) antenna.

Advanced GNSS Solution
PJK-300 – dual-frequency, all-in-view network RTK rover - with the embedded GIS technology delivers a long-range RTK performance, fast-initialization time, and high-precision. For specific survey applications it can provide outstanding real-time centimeter-level accuracy even in handheld configuration.

Designed For Efficient Network RTK
Very lightweight, with compact and rugged design, as well as large memory and autonomy, PJK-300 has been designed for a confortable and productive field use. Its extended wireless communications (Bluetooth, Wi-Fi) and embedded GSM/GPRS modem make PJK-300 a powerful solution suitable for any network RTK applications.

Best Value For A High-End Survey Solution
PJK-300 is extremely cost-effective offering meeting the most demanding requirements for a high-end survey solution. It provides possibility to interwork with a wide range of survey instruments and accessories to run complete survey jobs, including site calibration, stake out, and survey projects where total stations are used.
PJK-300 - Specifications
Product specifications

· Constellation : GPS, GLONASS, SBAS

· Frequency : L1, L2

· Channels : 45

· Update Rate : 0.05 sec

· Data format : RTCM 3.1, ATOM, CMR(+), NMEA

· Raw data output : Yes

· Real-time Accuracy - RTK mode (HRMS) : 1 cm

· Real-time Accuracy - DGPS mode (HRMS) : < 30 cm

· Real-time Accuracy - SBAS mode (HRMS) : < 50 cm

· Post-Processed Accuracy (HRMS) : 0.5 cm + 1 ppm

· Time to first fix : 15 sec

· Initialization range : Up to 40 km

· Processor : 806 MHz

· Operating system : Windows Mobile 6.5

· Communications : GSM/GPRS, BT, WLAN

· Unit size (mm / inches) : 190x90x43mm / 7.5x3.5x1.7in

· Weight : 0.62 kg / 1.43 lb

· Display : 3.5

· Memory : 256 MB SDRAM / 2 GB NAND / SDHC

· Temp Min (°C) : -20°C / -4°F

· Temp MAx (°C) : 60°C / 140°F

· Waterproof : Yes

· Shock & vibration : ETS300 019 & MIL-STD-810

· Power (type - lifetime) : 6600 mAh Li-Ion / > 8 hrs

· Antenna Type : Internal / External

· Firmware options : Yes

· Software options : Yes

Q: Handheld GPS how to achieve decimeter: Hello A GPS is not up to the requirements of the class, if no one can buy that expensive submeter GPS, currently on the market with the best precision is GPS, is Derek GARMIN this year a new eTrex 10, 20 and 30, the three can be reached within 3 meters accuracy, you can look at

Q: My friend is in use, the difference is not big, professional handset (smart or Magellan bulky, but 3 case), but the price is expensive, but can not call and map is very rotten, endurance of 10 hours (dry battery) the mobile phone also has all the time. Know friends say, I mainly in the suburbs! Thanks: Professional GPS is mainly used for acquisition, is not used for navigation; of course, some professional GPS can install third party software, the accuracy is higher than the phone, this is positive;Mobile navigation is only used for navigation, navigation, path analysis and navigation functions, not the acquisition of maps of the instrument.

Q: I bought the way k20s, this handheld GPS how: Ordinary hand-held GPS is 3-5 meter accuracy, high accuracy can be achieved unless buy submeter ordinary user, if you can.

Q: Hand held GPS coordinate conversion method: Three parameter test DX, DY, DZ, DA, DF after the conversion parameters of the five, must be prompted to enter the handheld GPS, while the input area of the central meridian longitude. E on behalf of the east longitude, projection ratio of 1, the deviation of things to the north and south of the deviation of 0, and set the unit for M. Enter these parameters, should be taken to the field test, check whether these five parameters are correct. The method is selected, vision, GPS receiving signal strength of the feature points in the field (such as linear object intersections, independent features, etc.) is the best stone control points were measured and compared with theory and find out the coordinates of these points. If the results of the comparison exceed the nominal accuracy of the instrument, the conversion parameters or the problems that should be found should be recalculated.

Q: What is GPS Mu meter ah, with the general said that the GPS measuring instrument what is the difference?: GPS Mu meter also known as land area measuring instrument, handheld meter meter, etc.. Integrated computational methods for understanding and intelligent high precision GPS positioning system, the precise area of the handheld computer system, can realize the irregular area of real-time measurement and dynamic graphical display and intelligent data processing and storage.GPS measurement of the meter is different from the general GPS measuring instrument is based on the latitude and longitude of its area calculation function, general GPS is generally used for positioning.

Q: Handheld GPS and mobile phone GPS what is the difference?: Handheld GPS also supports GPS compass navigation and map navigation as well as other more professional GPS applications; mobile GPS can work with fewer, more consumer grade product applications

Q: What do you need to test for GPS?: As a high-tech product, GPS has a very complex technical parameters. However, as people's living standards improved rapidly, more and more ordinary people began to pay attention to the positioning and navigation tools originated from the military. Because the convenience it brings is unprecedented. In order to let everyone out of all the technical parameters of GPS receiver, no longer confused at the time of purchase, the author selected six of the most important technical indicators, one by one to explain to you. 1 parallel channels on the market most of the GPS receiver is a 8 channel, 12 channel, the 16 channel, which allows them to continuously track the information of each satellite. Some GPS devices only have 2 to 5 parallel channel receiving satellite signals, because the average of 8 satellites are visible, which means that the GPS receiver must visit each of the satellites in order to obtain information about each satellite. All of our products are in Shenzhen channel 16 channel, multi-channel parallel GPS receiver, including the advantages of rapid cold start and initialization of satellite information, but also in the forest area can have a better reception. General 12 channel receiver does not require an external antenna, unless you are in a bad environment conditions such as closed space, such as the cabin, the car. 2 the sensitivity of the GPS satellite signal to the ground has been very weak, as well as ground wireless communication clutter interference. The lowest traceable signal strength of the GPS receiver determines how much useful signal is received. A GPS receiver with a lower minimum tracking signal strength has a higher sensitivity, and can receive more available satellites under bad conditions

Q: How about the accuracy of the GPS handset?: zhonghaida Qmini series: 3 meters; zhonghaida Qcool series: 5 meters; precision and price is proportional to the precision is higher, the higher the price.

Q: Handheld GPS, the measurement of arable land, fixed point and circle test, which is more accurate,: So for you to measure the area, some of the 3cm point error surrounded by the graphics area and some millimeter level point error surrounded by the graphics area is not much difference.

Q: What is the difference between professional navigation and professional GPS navigator: 3 map software is accurate, you can identify the road on the viaduct, and you can tip up and down viaduct."This should be no problem currently on the market of the navigation software is mainly three: Skywalker, Kai Lide, cityonmap. Three navigation software has its own advantages and disadvantages. I personally feel that the person with Skywalker more, some car navigation systems (non open operating system) OEM software with Kay more than cityonmap map Skywalker is better but the interface is not good.4 mobile phone PDA load or other independent GPS devices can be.

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