Method for single path detecting input signal phase difference and relative amplitude

A technology of input signal and relative amplitude, applied in transmission monitoring, transmission system, communication channel monitoring, etc., can solve problems such as debugging and manufacturing difficulties, channel matching difficulties, inaccurate phase difference, etc., to quickly determine signals and process signals, The algorithm is simple and reliable, and the effect of high reliability
CN1946071AInactive Publication Date: 2007-04-11NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
Publication Date
2007-04-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

This invention discloses a method for testing phase difference and relative amplitude of input signals in single channels, which generates modulation signals by a control frequency splitter then to modulate the input signals to merge them to mono-channel transmission, then the merged signals are transformed, sampled, window- added and FFT to get information of phase difference, amplitude and relative amplitude.
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Description

technical field

[0001] The invention relates to a single-channel method for detecting the phase difference and relative amplitude of the input signal between two or more input signals in the communication field, which is especially suitable for making a single-channel single-pulse tracking receiver in the antenna tracking technology It can also be used in other devices that need to detect precise phase difference. Background technique

[0002] There are two main methods for phase difference detection when the signal-to-noise ratio of the current input signal is low and the signal frequency range is large: one is the phase-locked loop detection method, and the other is through the fast Fourier transform (FFT for short) after dual-channel sampling. ) to detect the phase difference or to use cross-correlation to detect the phase difference. Use phase-locked loop technology to track and filter the input signal to improve the signal-to-noise ratio of the input signal, and then p...

Claims

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