GPS positioning is what causes the slow GPS positioning is generally slow because of a hardware problem, determine GPS positioning time is that it's time to start positioning time is the time to restart GPS receiver receives location determines the time required for now. For 20-channel receiver, if you locate near the last location of the cold start positioning time is usually 3 to 5 minutes, the hot start of 15 to 30 seconds. Cold start initial use; battery depletion resulting in loss of information ephemeris. GPS can not locate what is the reason the general case of GPS signal vulnerable buildings and metal barrier, so the use of GPS to be outdoors. If you can not locate in the car, if you have an external antenna, the GPS antenna is best placed in the roof, in addition, will also affect the auto film positioning of GPS devices. GPS positioning is not exactly what the reasons 1, GPS positioning system, GPS positioning POLICE vehicle, whether car positioning system, or personnel positioning system. Both civilian and military sub-two kinds. Because the GPS satellite positioning system used in the United States military and civilian signal a difference in Hebi public security vehicle GPS positioning cost, GPS positioning system we contacted all of this is the root of civilian positioning error. 2, the map is accurate and detailed GPS positioning system is accurate also factors. 3, misunderstanding, positioning and positioning GPS positioning system on the electronic map in reality there is a gap in the electronic map based on the coordinates of a reference point for the public security vehicle positioned Hebi install GPS positioning company, but in In reality this coordinate point may be a building or other object. 4, GPS positioning system itself quality problems Hebi public security vehicle GPS locator, installed incorrectly may cause misalignment. Currently the taxi industry is facing the following problems: 1, vehicle scheduling difficulties: inability to ascertain the exact position of the vehicle operator and cargo, the vehicle can not run for efficient management. 2, driver Touyou phenomenon, difficult to control the high cost of the bridge crossing: According to a survey to understand the current fleet management mainly three problems: First: Driver consumption situation difficult to resolve; Second: the driver detour bridge crossing with reimbursement of expenses. Third: private driver pull goods. 3, people, vehicles and security is difficult: in the vehicle during the robbery lack of effective preventive measures, people, vehicles and security can not be effectively guaranteed. Remote vehicle GPS dispatching system, is based on the social environment and background and developed, to provide a complete technical solution for solving the above problems. Achieve security related, financial, and material safety, and monitor and control vehicle behavior through the monitoring software, reduce the oil consumption of the vehicle, reimbursement detour happening, improve operational efficiency and effectiveness, improve fleet management vehicle with high-tech means management and scheduling, with great social and economic benefits! Zhengzhou Depot for the taxi industry characteristics and tailored to the needs of taxi GPS dispatching system, the taxi vehicle positioning and monitoring and service dispatch, vehicle quickly respond to service requests and provide various information services for the taxi driver, by system, according to the customer can call up location, the nearest taxi dispatcher, improve efficiency, reduce taxi idling rate, when the driver encountered criminals carjacking, you can press the alarm button for help to the center, for the safety of drivers and vehicles provided more effective protection for your business to provide passenger satisfaction, standardize their internal management to improve the competitiveness of enterprises credible.