High-precision multi-mode multi-frequency Beidou navigation SoC chip

Abstract

A high-precision multi-mode multi-frequency Beidou navigation SoC chip is composed of a baseband algorithm module, a high-performance microprocessor, a high-performance ADC module, a DDR3 interface module, a low-speed expansion interface and the like. The baseband algorithm module comprises a GNSS tracking module, an anti-interference module, a telegraph text and pseudo-range processing module, a time synchronization and time service module and a low-power long code direct capturing module. The high-performance microprocessor adopts an asymmetric architecture, each kernel is provided with an exclusive peripheral, and the two kernels are also provided with a shared peripheral. The chip is provided with a DDR3 / DDR3L controller, is integrated with a PUB and a PHY, and can be connected with a DDR3 memory or a DDR3L memory. 10 paths of high-precision ADCs (Analog to Digital Converters) are integrated on the chip, and are composed of five 2-channel ADCs. In the aspect of SoC realization, compared with the prior art, the functions of the product are more complete, and the processing capability of the chip is stronger. An ARM A53 processor is adopted, and the chip is obviously superior to a chip in the prior art in power consumption and integration level. The design of an SoC chip with small size, low cost and high integration level is realized.

Description

technical field [0001] The invention belongs to the technical field of satellite navigation, and in particular relates to a high-precision multi-mode multi-frequency Beidou navigation SoC chip. Background technique [0002] In 2019, the Beidou global system system has been fully deployed, marking the completion of the deployment of the core constellation of the global system, which will provide global users with excellent navigation services, global short message communication, international search and rescue and other special services. System system, the Beidou global system has four aspects of performance improvement: First, higher accuracy. After the completion of the Beidou global basic system, the global positioning accuracy will be 10 meters; in the Asia-Pacific region, the positioning accuracy will be increased from the original 6 meters to 5 meters; It is a stronger atomic clock. The Beidou satellite uses higher-performance rubidium atomic clocks and hydrogen atomic ...

AI Technical Summary

Problems solved by technology

[0004] At present, the main Beidou chips in China have the following problems: 1. Only support a single frequency point, and do not support multi-mode and multi-frequency; 2. The chip only supports baseband functions, and there is no SoC; 3. The positioning accuracy of the chip is not enough, and does not support centimeter level position

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