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Method of position determination in a global navigation satellite system (gnss) receiver

A technology of global navigation satellites and receivers, which is applied in the field of navigation receivers and can solve problems such as data complexity

Inactive Publication Date: 2011-09-21
MSTAR SEMICON INC +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This means that the complexity of the data received by GNSS receivers

Method used

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  • Method of position determination in a global navigation satellite system (gnss) receiver
  • Method of position determination in a global navigation satellite system (gnss) receiver
  • Method of position determination in a global navigation satellite system (gnss) receiver

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Embodiment Construction

[0043] see figure 1 The schematic block diagram shown will further describe the preferred embodiment of the method of the present invention by way of an example explaining the function of a GNSS receiver. The analog front end 1.2 amplifies, converts to IF, selects and digitizes, ie converts the signal into a sequence of digitally sampled signals, the GNSS aircraft signal which is collected via antenna 1.1. Also, the analog front end 1.2 utilizes the signal from the reference oscillator 1.3, which also provides the GNSS receiver's timing signal. The digital downconverter 1.4 converts the GNSS signal samples to the base frequency under the control of the processor 1.9, and usually performs some additional processing such as: signal interference suppression, changing the sampling rate (eg sampling optimization), additional digital filtering. The base frequency converted samples are stored in the signal memory 1.5. The rate at which samples are written to the signal memory 1.5 m...

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Abstract

A method of determining coordinates of a Global Navigation Satellite System (GNSS) receiver includes processing signals from space vehicles including performing measurements of pseudoranges and Doppler shift, extracting ephemeris data, and determining GNSS receiver coordinates from said measurements.

Description

technical field [0001] The present invention relates to a navigation receiver, in particular to a method for determining coordinates in a Global Navigation Satellite System (GNSS) receiver. At present, there are several global navigation satellite systems in practice, such as the American Global Positioning System (GPS), the Russian Global Navigation Satellite System (Glonass), the European Galileo (Galileo) navigation system, and China's Beidou or Compass. GPS. Background technique [0002] Navigation receivers receive signals from GNSS receiver aircraft (SVs) and measure parameters of these signals, namely virtual range and Doppler shift of carrier frequency. The measurement of the virtual distance is carried out by determining the phase of the radio signal sub-carrier, which comprises a pseudo-random sequence (or pseudo-random code) superimposed on the carrier by means of phase modulation. For example, in the Global Positioning System, subcarriers are Gold codes with a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/24G01S19/42
CPCG01S19/40G01S19/42
Inventor 米凯尔·科罗斯多夫尼克莱·米凯洛夫瑟吉·波斯佩洛夫
Owner MSTAR SEMICON INC