The development of 1GPS and technology of GPS of of of working principle overview namely the abbreviation of global location system, the earliest it is the satellitic navigation system that uses in martial domain, the feature is global, round-the-clock, successional with real time sex, it is navigation locate and time with location system, what can offer precision for all sorts of users is three-dimensional change coordinate, and can provide speed and time. As the system ceaseless and perfect, this system is already complete civil change, and be in production, life had effect. The principle that works with respect to its below has brief introduction. (1) designed many application pattern in the GPS in actual application in order to satisfy the requirement of much method. Included the form of the exercise such as static state, swift static state and RTK among them. The form that the static state works basically is applied extensively by survey industry, for the lithosphere deformation, land is measured, the project is measured wait for the form of data; swift static state that offers high accuracy main good point is efficient with high accuracy, be used extensively by construction project;RTK is in have outstanding advantage with real time sex quickly, wide application collects the lofting with the project to wait at data. (The working principle of 2)GPS system. The GPS system that uses at present basically is the location system after using the technological sophistication that need branch. Poor cent locates even if use many autodyne to undertake reception to satellitic signal, among them the fiducial station that an equipment regards foregone coordinate as, put go up in fixed coordinate, the other coordinate that measure emplacement as mobile station. Working principle is, fiducial site basis corrects the accurate coordinate of the dot, beg those who give satellitic space to correct numerical value, correct this data to send each mobile stations, the fixed position that will decide oneself is changing specificly according to its after mobile station receives this data. Technology of the RTK in actual measurement uses carrier wave the phasic technology that need branch, the digit of carrier wave photograph that handles each observation station place to form in real time is occupied, use the method that need branch to have consideration. When be measured actually, fixed position requirement is fiducial the acceptance of the station data of real time observation and foregone data deliver machine general in real time to stand to shift, the seeks solution to give need data with mobile fast station. Arrive in observation after the satellite, OK real time seek the dynamic displacement data that gives centimeter of volume level, this is the working principle of whole GPSRTK system. And before the tradition measures means photograph to compare, new-style RTK technology is pair of GPS technologies is perfect, and be below the help of computer technology, GPSRTK technology should satisfy electromagnetic wave to transmit a condition to be able to be mixed quickly only the finishing exercise of high accuracy, eliminated can inspect condition, visibility, seasonal the influence of the element, raised the accuracy of observation. 2GPS measures the GPS with technical current feature to be below the help of respective electron technology, already wide application is measured in the earth, the city is measured, the project is measured, fixed position is measured wait for a domain, measure a method into what change for convention stage by stage, does its feature have the following: ? ?1) resolved a worry that inspects an obstacle, because be to use a satellite to serve as agency, make so do not need to connect between observation station inspect. In measuring can the more agile choice that undertakes measurement point stands, solved big range to measure what what encounter to connect inspect a problem. (The precision of 2) observation is tall, data is accurate and reliable. The planar precision that the general RTK technology in observation can arrive at measures level for 10mm, tall Cheng precision measures level for 20mm, the precision of static observation can achieve the 5mm inside plane to measure level, and the sex of on the safe side that used carrier wave technology to rise to data is transmitted and be handled. (3) is time-consuming short, new GPSRTK technology is used to be able to obtain the three-dimensional coordinate that measures an object inside 1s ～ 2s in observation, raised the real time sex of observation and efficient sex greatly. (What 4) system offers is stereo change three-dimensional coordinate, this gives measure those who increased to abound to consult form, the processing that can pass pair of three-dimensional coordinate forms a series of graphs and relevant data, provided a help to measure the follow-up processing of data. (5) operation is simple and apt. The acceptance of GPS device had gotten bigger improvement, automation rate is higher, can have been finished in the operation through speech clew measure, reduced the probability that make mistake. Additional, also operated software to have link with popular computer on the operating system, and came true to feel an operation, it is OK that if use blue tooth,join is returned data of real time receiver, the measurement with corresponding choice the mode of action, can enter working status;(6)GPS measure the effect that does not need to consider weather factor, also won't get the limitation of landform. 3GPS measures medium applied in mine 3. The measurement technique that 1 pair of excavate and the current situation that come off and landform have metrical a tradition needs to measuring a station to go up to undertake to the landforms all round and surface features refined cloth is nodded, and these measuring the dot needs and measure a station to maintain inspect, participate in metrical personnel to need 3 people of 2 ～ to connect at least inspect operation ability to finish, when collecting total data plot, once discover a problem,undertake weighing measuring to field with respect to need. Current GPSRTK technology falls in general landform requirement, the observation station that sets is OK the area implementation inside limits of 10km of diameter of the one-time half-and-half that finish is measured, decreased to measure the reference point that means place needs and the amount that measure an instrument before greatly, and the frequency with mobile equipment. And the operation can be finished measure, measure to the broken ministry of landform especially, need to await very short time to be able to get three-dimensional coordinate already only. The code that in be being measured at the same time, needs to input surface features only is OK real time understanding nods a precision. This technology let fieldwork rise efficiency, managing charge, reduced the intensity of labor. And taller precision and accuracy came true in the measurement of mining area, after creating image precision can reach centimeter of level, the error is minor, for excavate area, come off the measurement of the area provided reliable three-dimensional coordinate data, still can come true through software at the same time one-time into the graph, the relief map that scale place needs. 3.
The 2 helps bore, fixed position that drafts the ground, border to delimit classify lofting uses GPS and measure the characteristic with tall precision to be able to realize pair of some completely to the fixed position of area is measured and plan. What GPS uses to have specific place and attrib border sex in because this waits in the exploitation of mine, construction,be being measured is very reliable certainly. And the works not to accept climate influence of GPS, and remote measurement can undertake in the job, make its made the technology of first selection mapping that at present mine project measures. 3.
The measurement that 3 helps undertake the project is measured uses GPD and software to undertake assorted at present, can form the database system of mine management, the data that can reduce intermediate segment so is delivered and handle, can realize CAD to change, improved the administrative efficiency that mine manufactures. The precision that at the same time its measure tall, rate is rapid, make use very few labor power OK finish right bigger collect the data that pares the project is measured to collect update with chart, and pass the three-dimensional data with newer real time can realize mining area of pair of large open air collect pare project amount undertakes measure and be checkinged and accept. Of quality of the observation in 4GPS application raise (1) uses foregone site undertake comparative examining, decorating the static GPS that measures a network namely appearance of complete perhaps station measures an a few reference point more, the measurement that uses RTK next data undertakes comparative to it, examine with what this undertakes accuracy, if discover a problem can in time correct. (2) repeats measure, be in namely every time after initialization is successful, first remeasure one or many measure a place, undertake comparative with data of previous and same RTK measurement point, will examine with this metrical outcome. (Frequency conversion of 3) broadcasting station checks, build inside the limits of the test many base station, every base the frequency that the station uses is different, send with this correct data, mobile station undertakes choosing with frequency conversion switch, accept respectively different base of the station correct data, undertake comparative thereby, such OK the accuracy that judge measures an outcome. CNC Milling