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PLD (programmable logic device), DSP (digital signal processor), combined navigation system, and data processing method and apparatus

A data and processor technology, applied in the field of navigation, to achieve the effect of improving overall performance, reducing burden, and reducing the number of interruptions

Active Publication Date: 2017-08-04
BEIJING JINGDONG QIANSHITECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] A technical problem to be solved by the present invention is: how to reduce the complexity of data communication in the integrated navigation system and improve the overall performance of the system

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  • PLD (programmable logic device), DSP (digital signal processor), combined navigation system, and data processing method and apparatus
  • PLD (programmable logic device), DSP (digital signal processor), combined navigation system, and data processing method and apparatus
  • PLD (programmable logic device), DSP (digital signal processor), combined navigation system, and data processing method and apparatus

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Embodiment Construction

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as any limitation of the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0042] Aiming at the existing integrated navigation system, there are a large number of interrupt processing in the communication process between FPGA and DSP, which increases the burden of FPGA and DSP and affects the overall performance of the system. This solution is proposed.

[004...

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Abstract

The invention discloses a PLD, a DSP, a combined navigation system, and a data processing method and apparatus, belonging to the field of navigation technology. The PLD provided by the invention employs an interruption manner for transmission of inertial navigation data to the DSP; however, the PLD indicates a PPS signal to the DSP by adding a PPS flag bit into an inertial navigation data packet; moreover, the PLD caches satellite navigation data in FIFO and sets IO to be in a set output state; and the DSP reads the satellite navigation data in idle time. According to the invention, the frequency of interruption in the process of data communication of the combined navigation system is reduced; burden on the PLD and the DSP is alleviated; and the integral performance of the system is improved.

Description

technical field [0001] The invention relates to the technical field of navigation, in particular to a PLD, a DSP, an integrated navigation system, a data processing method and a device. Background technique [0002] Inertial navigation is a completely autonomous navigation method, but its error accumulates over time. The error of satellite navigation does not diverge, but its signal is easily interfered. The inertial / satellite integrated navigation system just complements each other, and has a wide range of applications in some high-precision and high-demand location service occasions, such as unmanned vehicles and drones. However, the real-time requirements of the navigation system are relatively high, and the amount of data processed by the integrated navigation system is relatively large, so the integrated navigation system puts forward higher requirements on the performance of the processor. [0003] Because a large amount of real-time data processing is required, and c...

Claims

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Application Information

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IPC IPC(8): G01C21/16
CPCG01C21/165
Inventor 阙兴涛
Owner BEIJING JINGDONG QIANSHITECHNOLOGY CO LTD
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