China has developed the fourth generation of Beidou navigation chip positioning accuracy 2.5 meters

China Aerospace Science and Technology Institute of Information Technology Xi'an Aerospace Huaxun announced recently, successfully developed the fourth-generation high-performance Beidou / GPS navigation chip. The chip positioning accuracy is 2.5 meters, captured sensitivity, tracking sensitivity and other performance indicators to achieve international leadership. It is understood that Beidou four-generation chips and its implementation and operations have successfully successfully win the "Shaanxi Provincial Public Security System Police Cars Satellite Positioning Management System" project. Chip close-up, this chip is only 4mm × 4mm large The project is the first provincial-level Beidou application project in the field of public security system police management vehicle management. Shaanxi Province public security organs have installed the use of the Beidou positioning vehicle terminals, and the system is completed. Shaanxi Province will be fully improved. The use efficiency of the police car. Previously, the Beidou System cm position is achieved by the ground enhancement receiving station, which is limited to local areas, and this upgraded navigation chip can achieve 2.5 meters in the Beidou navigation coverage area. It is understood that Beidou four-generation chips and its implementation and operations have successfully successfully win the "Shaanxi Provincial Public Security System Police Cars Satellite Positioning Management System" project. The latter is a police car field of public security management system first provincial Compass application projects, Shaanxi province's public security organs all kinds of police cars total installed Beidou vehicle terminal over ten thousand units, after the completion of the system improve Shaanxi Province The use efficiency of the police car. Performance indicators: Noise coefficient: <2.5db Work current: <25mA Gain: Dynamic range. 1882.50db Chip size: 4mmx4mm Work temperature: -40 ° C ~ + 85 ° C Package form: QFN32 Aerospace Huxun four-generation dual-mode dual-channel RF chip, based on 0.11um CMOS process design, parallel support GPS L1 and Beidou second generation B1 frequency point; internal integrated two-pole LNA, RFA, Mixer, IFF, PLL, AGC, ADC, SPI, the LDO, the antenna detection function module; low-power, low-cost, anti-electromagnetic interference and other advantages. Related reading: Mini navigation chips have a variety of functions of traditional GPS

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