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System and method for realizing baseband signal communication based on nandflash bus in gnss

A baseband signal and bus technology, applied in baseband system components, bus network, sustainable communication technology, etc., can solve the problems of slow baseband data transmission speed and baseband signal communication time, and achieve the effect of improving data reading speed

Active Publication Date: 2016-08-10
上海司南卫星技术股份有限公司
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Problems solved by technology

[0003] The purpose of the present invention is to overcome the above-mentioned shortcoming of prior art, provide a kind of can realize and solve the problem that adopts traditional bus to read and write baseband data slow transmission speed, greatly reduce the communication time of baseband signal, save CPU processing time, have more extensive System and method for realizing baseband signal communication based on NandFlash bus in global navigation satellite system of application scope

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  • System and method for realizing baseband signal communication based on nandflash bus in gnss

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[0031] In order to describe the technical content of the present invention more clearly, further description will be given below in conjunction with specific embodiments.

[0032] In order to overcome the above-mentioned shortcoming of the prior art, the present invention has studied the commonly used bus sequence of ARM (Advanced Risc Machellones) processor at present, has carried out evaluation for complexity and communication speed, selects NandFlash bus (NandFlash memory is a kind of Flash memory, It is a non-volatile flash memory with large capacity and fast rewriting speed) to replace traditional RAM and VLIO bus to realize baseband signal communication, and use DMA (Direct Memory Access, direct memory access) controller to realize the transmission of NandFlash data to memory , does not occupy the CPU core time, the NandFlash bus is characterized by synchronous reading and writing of data, the synchronous reading and writing speed is fast, and the baseband circuit simulat...

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Abstract

The invention relates to a system for achieving baseband signal communication based on a NandFlash bus in a global navigation satellite system. The system comprises an ARM processor, the NandFlash bus and a baseband circuit, wherein the ARM processor is in data communication with the baseband circuit through the NandFlash bus. The ARM processor comprises a CPU, a direct memory access controller and a NandFlash bus controller, wherein the CPU is connected with the NandFlash bus through the direct memory access controller and the NandFlash bus controller. The invention further relates to a method for achieving baseband signal communication in the global navigation satellite system based on the system. By means of the system and the method for achieving baseband signal communication based on the NandFlash bus in the global navigation satellite system, the data transmission speed can be improved, and a lot of time can be saved for the CPU to carry out navigation calculation. The system and the method are applied to various navigation fields or other fields using the method and are suitable for being popularized and applied in large scale.

Description

technical field [0001] The present invention relates to the field of global navigation satellite systems, in particular to the field of data transmission in a global navigation satellite system receiver, and specifically refers to a system and method for realizing baseband signal communication based on a NandFlash bus in a global navigation satellite system. Background technique [0002] In GNSS (Global Navigation Satellite System, Global Navigation Satellite System), due to the multi-mode and multi-frequency point tracking satellites of the receiver, the current Beidou satellite navigation system (especially Beidou second-generation satellite navigation system), GPS (Global Navigation Satellite System, Global Positioning System), GLONASS (Glonass, the abbreviation of Global Navigation Satellite System in Russian) and Galileo (Galileo, the European satellite navigation system) have a total of more than a dozen frequency points, and the tracking channel will reach hundreds, co...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/40H04L25/02
CPCY02D30/50
Inventor 宋阳王永泉高阳刘若普
Owner 上海司南卫星技术股份有限公司
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