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A kind of iq data analysis and processing system, signal analyzer and method

A data analysis and data technology, applied in spectrum analysis, instruments, measuring devices, etc., can solve problems such as inability to analyze, poor scalability, and inability to provide intermediate data

Active Publication Date: 2020-09-18
THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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Problems solved by technology

The analysis of complex modulated signals is based on IQ data. IQ data is a time-domain data that records signal amplitude and phase characteristics. Traditional signal analyzers can only complete several or more than a dozen types of BPSK and QPSK based on IQ data. The signal of the modulation mode is analyzed, and the analysis result of the signal modulation quality is obtained, which is displayed in the form of constellation diagram, eye diagram, lattice diagram, etc. For signals other than these modulation types, it cannot be analyzed
[0003] The final measurement results of traditional signal analyzers are of a single type, which cannot meet the needs of all users for signal analysis, and cannot provide intermediate data, and the scalability is poor

Method used

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  • A kind of iq data analysis and processing system, signal analyzer and method
  • A kind of iq data analysis and processing system, signal analyzer and method
  • A kind of iq data analysis and processing system, signal analyzer and method

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Embodiment Construction

[0036] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0037] 1. The present invention discloses a system for analyzing and processing IQ data, such as figure 1 As shown, including: LC oscillator, anti-aliasing filter, step gain, AD converter, digital signal processor and main controller connected in series in sequence;

[0038] Among them, the main controller includes: a channel configuration parameter adaptive processor and an IQ data analysis and output synchronization processor.

[0039] 2. The principle of channel configuration parameter adaptive processor

[0040] According to the coupling relationship between parameters, such as the relationship between measurement time and sampling length, the relationship between reference level and attenuator, etc., the parameters set by the user are self-adapted to meet the requirements of channel configuration.

[0041] According to the set center fre...

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Abstract

The invention discloses an IQ data analysis and processing system, signal analyzer and method, comprising: automatically calculating local oscillator frequency, sampling rate and sampling length channel configuration parameters according to the set center frequency, measurement bandwidth, and measurement time signal acquisition parameters, Make the local oscillator and anti-aliasing filter work in a suitable state, complete the configuration of the hardware channel, and collect IQ data. Beneficial effects of the present invention: an adaptive processor for path configuration parameters is designed, which realizes automatic calculation from signal characteristic parameters to path configuration parameters, and automatically configures paths; designs an IQ data analysis and output synchronization processor, and realizes signal frequency Analysis of domain characteristics and time domain characteristics, and can output the analyzed IQ data at the same time.

Description

technical field [0001] The invention relates to the technical field of signal modulation, in particular to an IQ data analysis and processing system, a signal analyzer and an IQ data analysis and processing method. Background technique [0002] With the rapid development of military communications and civilian communications, signal generation technology has also been rapidly developed, which is characterized by increasingly complex signal modulation systems and increasingly difficult modulation quality analysis. When analyzing complex modulated signals, specific modulation pattern analysis functions are usually required. The analysis of complex modulated signals is based on IQ data. IQ data is a time-domain data that records signal amplitude and phase characteristics. Traditional signal analyzers can only complete several or more than a dozen types of BPSK and QPSK based on IQ data. The signal of the modulation mode is analyzed, and the analysis result of the signal modula...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R23/165
Inventor 李立功张峰王峰张超周钦山
Owner THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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