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GPS signal instability development is limited by jodie mht
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GPS signal instability development is limited |
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Automotive
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April 26 message, according to foreign media reports, according to the professionals introduced, from the birth of portable navigation systems to automatic navigation vehicle running can be seen that there are two fundamental flaws, the U.S. Global Positioning System and Russia's Global Navigation Satellite System : First, they can not act on the indoor; Second, they actually only run in two-dimensional world. Now these defects have been even more obvious: after all, the GPS signal has been running the 2.02 million km, and extremely weak. For a short-range objects signal to pass through the concrete and other solid obstacles is very difficult. Can not expect a run of 50 watts of signal 12,000 miles away to do this. The difficulty of detecting GPS signal on Earth is comparable to looking for a million miles away, a 25-watt light bulb. When the objects to detect changes in altitude, the situation is more complex; GPS and GLONASS (global navigation positioning system) can measure the altitude, but generally measured data are not accurate enough and the pixel is very low (10 ~ 25m ), far from meeting the daily needs. Despite these limitations, space-based satellite navigation system has changed almost every aspect of society, from hardware maintenance to agriculture, from the drawing to find a girlfriend, which all play an important role. However, if that can be run in the indoor navigation system would happen then IPS (indoor navigation system) Mentioned in the news, Google's Andrews map system has been put into use in shopping malls, airports, and other large commercial spaces. Nokia is also working to develop an indoor positioning system, but the use of three-dimensional model, rather than the two-dimensional program. Just last week, Broadcom Corporation (Broadcom) released a new chip (BCM4752), the chip supports indoor positioning system, and will soon be put to use on your smartphone. Whether you believe it or not, in the near future people will enjoy the indoor navigation. Experts say, among the IPS program is being progressively over the next year or two, it will first be installed on a number of high-rise buildings and a large number of visitors scenic Until then, it will be like a smart phone in the global popularity . IPS in daily life, how It also beat the IPS. The researchers said that people like to use the "NIKE GPS applications," Main products: car dvd, car gps and car dvd player are with good quality.track record of running speed and distance, then, then use IPS, then people will feel the NIKE GPS is not very kind, because IPS can record the end of the next user to run a number of steps and climb the number of floors, and the calculation is very accurate. The researchers also mentioned the IPS function is much more than that, its real function is that it will connect users daily the life unified arrangements, such as the arrangement of the user's social circle, and prompted some paid services. In addition, the IPS can forecast social network on some recreational activities, such as some of the activities on Facebook, and ultimately, the people transferred from the indoor to the daily social activities and IPS mobile applications can enhance people's social scene, why instead of for!
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