Q:In addition to the parameters, that is the problem of the machine, what method can reduce the error of these two machines to a minimum. Because, at the same time to find a coordinate. The gap is too big.

GPS was in error with 10 meters, with the star search results, related to the environment, if the precision is high, as long as the use of handheld GPS submeter or handheld RTK

Q:I would like to ask the GPS handset and GPS receiver (Surveying and mapping qualification application needs) is there a difference? If yes, what is the difference?

This is the case, GPS handheld refers to a thin hand, while the GPS receiver refers to the RTK host, equivalent to the base station in our industry said. The general application of Surveying and mapping qualifications are required for this application, referred to as RTK (1+1) set, level, theodolite, total station, walkie talkie, technical personnel.... And so on, are essential equipment.

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:Can you buy a good handheld GPS in China? FiveTrouble master recommended several professional handheld GPS brand, in addition to handheld GPS can speed it? Thank you!!

The main function is to use navigation as long as the navigation function can be used

Q:I just bought a handheld GPS Magellan No. 1, showing the latitude and longitude coordinates, I want to set the geodetic coordinates of latitude and longitude, do not know where to set, I would like to ask you, how to set, there is a better picture shows the best, thank you so much.Magellan GPS 210 is not 2000 shy

2 map reference setting: [[map] - unit "benchmark is set to User, and input the DX, DY, DZ, DA, DF parameters, usually DX, DY, DZ vary from region to region, so need to know the high level control points to solve, solving methods are as follows:The handheld GPS is placed in the control point field buried pile, were measured, and then hand coordinate coordinates and the known control points of the GPS measurements obtained for the poor, can be obtained by local coordinates and elevation deviation value: DX, DY, DZ.

Q:GPS handheld function to measure it?

Depends on the accuracy of the range you require, if the accuracy of the 3-5 meter can be used for ranging, measuring area, latitude and longitude, elevation information, etc.

Q:I am a handheld GPS precision is low, how to use to be able to improve certain accuracy

Look at the maximum accuracy of GPSIf the difference accuracy can reach 1cm you can connect CORS single base station and other network RTK way to achieve the corresponding accuracy

Q:How to use the handheld GPS whole watershed investigation

Therefore, it is an important method to solve the maximum value in physics by solving the maximum and minimum values of the physical quantity by the critical state.

Q:Jia Ming etre20 handheld GPS good

Jia Ming eTrex 20 has a microSD card slot and 1.7GB built-in memory space eTrex 20 allows you to store more user acquisition information, in addition to the map expansion slot, you can load the map of the global area of Garmin.

Q:What qualifications should a normal GPS locator have?

You ask is handheld GPS, it is the manufacturer's qualification requirements or what. For example, business license, tax registration certificate, organization code certificate, vendor authorization, software copyright, precision test report, 3C certificate, ISO9001, industrial grade IP certificate and other relevant qualification certificates and documents