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Signal processing device in global navigation satellite system

A technology of global navigation satellites and signal processing devices, which is applied in the field of information processing, can solve problems such as time-consuming, and achieve the effect of reducing development costs

Active Publication Date: 2021-06-04
UNICORE COMM INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the GNSS system includes multiple systems, it takes a long time for the GNSS signal receiver to acquire satellites of different GNSS systems

Method used

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  • Signal processing device in global navigation satellite system
  • Signal processing device in global navigation satellite system
  • Signal processing device in global navigation satellite system

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Embodiment Construction

[0048] In order to make the purpose, technical solution and advantages of the application clearer, the embodiments of the application will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0049] The steps shown in the flowcharts of the figures may be performed in a computer system, such as a set of computer-executable instructions. Also, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that shown or described herein.

[0050] figure 2 The structure diagram of the signal processing device in GNSS provided by the embodiment of this application. figure 2 Structure shown, including:

[0051] The data buffer is used to store the data of the signal according to the preset data storage s...

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Abstract

The present application discloses a signal processing device in a global navigation satellite system. The device includes: a data buffer for storing the data of the signal according to the preset data storage size of the satellite signal after obtaining at least two types of satellite signals of the GNSS system; a matched filter for storing the data according to the The signal type of the satellite signal, calculate the code bit correlation of the satellite signal, and obtain the correlation result; the coherent integral calculator is used to calculate the time and frequency of the satellite signal according to the correlation result of the satellite signal The coherent integration result of the satellite signal; the non-coherent integration calculator is used to calculate the coherent integration result of the satellite signal according to the preset non-correlated integration length, and obtain the incoherent integration result of the satellite signal; According to the incoherent integration result of the satellite signal, a peak search is performed to obtain a complete signal.

Description

technical field [0001] This application relates to the field of information processing, in particular to a signal processing device in a global navigation satellite system. Background technique [0002] The Global Navigation Satellite System (GNSS) is an artificial satellite system with multiple satellites, which can transmit signals containing spatiotemporal information to ground receivers. The receiver can use this information to achieve a position fix. [0003] figure 1 It is a schematic structural diagram of a GNSS receiver in the related art. Such as figure 1 As shown, the task of the acquisition engine in a GNSS receiver is to detect the presence or absence of a signal from a certain GNSS satellite. In a GNSS receiver, signal acquisition is the first step in baseband signal processing, followed by signal tracking, bit synchronization and PVT calculation. [0004] At present, the main GNSS systems include the Galileo system of the European Union, the GPS system of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/37G01S19/38
CPCG01S19/37G01S19/38
Inventor 李迪贾志科黄磊
Owner UNICORE COMM INC