1. Excellent quality, complete certification, safety first When choosing GPS navigation products, the configuration of software and hardware is very important. Generally speaking, the hardware configuration of professional brand manufacturers is more trustworthy. Some cottage GPS manufacturers often fabricate the hardware configuration, and it is difficult to guarantee the product quality in terms of LCD screen, GPS chip, processor, etc. Their entire GPS product production process is nothing more than a simple integration and assembly of some hardware. The hardware configuration of regular GPS manufacturers often has to go through layers of checks, and must pass ISO quality production standards (mainly ISO2000 quality certification, ISO14001 environmental certification) and other certifications. For automotive products, only through the "ISO/TS TS16949 standard certification" can we supply products and services to Mercedes-Benz, Volkswagen and other car manufacturers. Second, the software is easy to use, the data is accurate and rich, and the additional functions are many. The most concerned about the software is the accuracy of the GPS navigation map data and the timeliness of the update. The frequent update of the map has caused the production cost of the electronic map to remain high, so many unqualified GPS manufacturers will reduce the map update or pirate other electronic maps. If consumers use the machine navigation with "fake and inferior" maps, it is not only easy to "go astray", but even life-threatening. 3. Excellent brand, guaranteed after-sale service, and trustworthy In fact, the importance of brand is far more than anything else. Since the satellite navigation industry is a high-tech industry in the developing period in my country, only those professional manufacturers who have been working in the market for many years can guarantee the leading edge in product technology, and at the same time have the funds and strength to provide users with comprehensive and excellent service guarantee . The price and after-sales service of the product are also the main factors to consider when purchasing a product. Consumers hope to buy high-quality and low-cost products, but the results may not get what they want. Many navigation products on the market are "cheap" but not "good quality". Therefore, consumers should be reminded here that when purchasing products, they should not be blinded by simple abnormal low prices. For navigation products that are closely related to your own driving and travel adventures, you must not be stingy to pay for your own "travel safety". As a GPS navigation product, it is very important to upgrade product technology and update map data. Only professional brand manufacturers can provide such services to consumers in a timely manner. Application Prospects of GPS Technology in Highway Survey With the implementation of the rapid development of my country's national economy and the implementation of the western development, the construction of high-grade highways in our province ushered in unprecedented development opportunities, which put forward a higher level of development opportunities for survey and design. With the development of software technology and hardware equipment in the highway design industry, highway design has achieved CAD, and some software itself also requires the support of ground digital surveying and mapping products; establish a data link integrating survey, design, construction, and post-management. , reducing the intermediate links such as data transcription and input, is the requirement of "integration of internal and external industries" for highway survey and design, and is also the "bottleneck" that affects the development of high-grade highway design technology. Although advanced instruments and equipment such as electronic total stations have been used in highway surveying at present, conventional surveying methods are limited by lateral visibility and operating conditions, resulting in high work intensity and low efficiency, which greatly prolongs the design cycle. The progress of survey technology lies in the introduction of equipment and technological transformation. Under the current technical conditions, the introduction of GPS technology should be the first choice. Four applications in different fields of industry system software based on 3S technology For example: Xingruiyuan forest resources survey system developed based on mobile 3S technology not only has the function of handheld GPS navigation and positioning, but also has (1) the system can load various remote sensing images at will , scan topographic maps, traditional vector graphics and can automatically connect edges, thumbnails are generated intelligently. (2) Self-definition of resource survey attribute library, definition and management of point, line, and surface layers. (3) High-precision area measurement, two-point distance precision measurement. (4) Small class measured editing. (5) High-precision field measurement and registration. (6) Mutual conversion of various coordinates and conversion of various data formats. Completely realize the paperless and automatic resource survey.

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