| The emergence of GPS has changed the world. With the improving of hardware and software technological revolution, making the handheld GPS has stepped on the stage.Because of the quality clever portable, easy to operate, reliable and precision advantages, all-weather real-time navigation and positioning, mapping handheld GPS receiver has become more and more popular.This article from the handheld RTK data collection technology ground, introduces handheld RTK positioning principle, system components and operating advantages and disadvantages, error sources and solutions, the connection process handheld RTK base station and handheld terminals for a detailed explanation; for Southern S760 handheld RTK accuracy in line with internal and external testing, studied under conditions of adequate information, and more is known method for solving the optimal point seven seven parameters and the effects of different parameters on the positioning accuracy of RTK operation three commonly used conversion the relationship between the length of the baseline RTK positioning accuracy parameter model using control variable method; text initial attempt to use linear regression analysis of the handheld RTK positioning errors were analyzed to establish the accuracy of the error and HRMS, VRMS, HDOP, VDOP, GDOP, the number of satellites locked, handheld RTK small area error processing formula, the examples verify the measurement results can be corrected to improve the accuracy of data collection handheld RTK ground outcomes, provides a handheld RTK error handling method for other projects; total station and handheld RTK last two ground-based data acquisition modes were compared, results can be applied to a handheld RTK:Large scale mapping 500.Because handheld RTK ground data acquisition technology compared with traditional measurement techniques make the obvious advantages, as new trends, we'll see the industry's contribution to mapping in the future. |
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