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golf cart gps speedometer
Its fit (parameter | inquiry) mileage display is higher than Polo (parameter | inquiry), which leads to false low fuel consumption In order to verify whether the mileage of GG and the error of speedometer are within a reasonable range, the speed of GG and the accuracy of odometer are checked with the help of on-board GPS. The results show that compared with GPS data, the display of GG speedometer is 4 km / h higher (+4%), and the odometer reading of 100 km is 2 km (-2%) All within a reasonable range Positive speed deviation (slightly higher) can prevent speeding from being punished, and negative mileage deviation will not give people a false impression of fuel economy (honest performance)Motorists with GPs may also check the accuracy of your GG speed and odometer.
Press switch 1 (ok/reset): you can switch between "Table 1 and table 2". Press switch 2 (trip): it can switch between "instantaneous fuel consumption, average fuel consumption, driving range, driving range, average speed, digital speed, speed alarm, outside temperature and driving time". The contents displayed in Table 1: instantaneous fuel consumption, one-way average fuel consumption (fuel consumption 1), driving range, one-way driving range (mileage 1), one-way average speed (speed 1), digital speed, outside temperature, one-way driving time (time 1). The contents displayed in Table 2: instantaneous fuel consumption, cumulative average fuel consumption (fuel consumption 2), driving range, cumulative driving range (mileage 2), cumulative average speed (speed 2), digital speed, outside temperature, cumulative driving time (time 2).
The full name of GPS is global positioning system, which is the abbreviation of English global positioning system. It was first developed by the United States. It is the second generation satellite navigation system of the United States (Russia also has a similar system, its name is GLONASS). The global positioning system is composed of three parts: space part, ground monitoring part and user receiver. Among them, the core space part uses m satellites with an altitude of about 20200 km to form a satellite network. These m satellites are in a near circular orbit, with an operation cycle of about 11 hours and 58 minutes, distributed on six orbital planes (four satellites per orbital plane), and the orbital inclination is 55 degrees. The continuous distribution of satellites makes it possible to observe more than four satellites anywhere in the world at any time, so it has good positioning accuracy and realizes m-hour global navigation throughout the day. Civil GPS and military receiving frequency points are different. Civil GPS has scrambling code, poor positioning accuracy, dynamic drift and static drift. The horizontal positioning accuracy of most GPS receivers is 2.93M ^; About 3M. There are many factors that will affect the accuracy of GPS, and the main factors that introduce GPS error are
(1) Satellite clock error 0-1 5 meters; (2) . the satellite orbit error is 1-5 meters; (3) The error introduced by the ionosphere is 0-30 meters; (4) . the error introduced by the atmosphere is 0-30 meters; (5) The noise of the receiver itself is 0-10 meters; (6) . multiple reflection: 0-1m; (7) The total positioning error is about 28 meters. In fact, the satellite navigation message has included the correction parameters of the atmosphere, which can eliminate 50% to 70% of the error, and the error range of GPS in the past two years is roughly 10 meters or less.
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