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Device for real time correction of channel phase amplitude

A real-time correction and channel technology, applied in the direction of transmission channel monitoring, transmission monitoring, electrical components, etc., can solve problems such as the lack of dynamic real-time compensation

Inactive Publication Date: 2008-03-19
HARBIN ENG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current common measures are to compensate the system error or use software to compensate the phase difference between the two channels, but these methods cannot achieve dynamic real-time compensation

Method used

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  • Device for real time correction of channel phase amplitude
  • Device for real time correction of channel phase amplitude
  • Device for real time correction of channel phase amplitude

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Embodiment Construction

[0022] The present invention will be described in further detail below with examples in conjunction with the accompanying drawings.

[0023] In conjunction with Fig. 1, it has a switch 3, a switch 4, a switch 16, a signal processor 12, a phase-locked source 17, a frequency synthesizer 25, a mixer 18, a power amplifier 19, an attenuator 20 of 0-60dB, and a frequency sweep source 21. Amplifier 22, filter 23, 0-60dB attenuator 24, signal processor 12, etc. Switch 3 and switch 4 are single-pole, single-throw switches, which connect the signals input by antenna 1 and antenna 2, and switch 16 is a single-pole, three-throw switch. There are three kinds of calibration signal sources: ①The second half of the signal pulse; ②The phase-locked source and frequency The signal generated by the synthesizer through the mixer; ③The signal generated by the frequency sweep source. The working process is as follows: the signal received by antenna 1 and antenna 2 is input to the two channels throu...

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Abstract

The invention provides a real-time channel phase and magnitude correction device and a method thereof. The invention is comprised of a switch (3), a switch (4), a switch (16), a phase-locked source (17), a mixer (18), a power amplifier (19), a 0-60dB attenuator (20), a frequency synthesizer (25), a frequency sweep source (21), an amplifier (22), a filter (23), a 0-60dB attenuator (24) and a signal processor. By applying the real-time dynamic correction, the invention overcomes the problems that the existing correction system uses system compensation or software to correct the phase and magnitude according to a certain state and can't realize the dynamic correction. The invention corrects the temperature drift and noise ratio change with the time of vphi, and provides a phase noise random transformation system, thereby realizing the high precision direction finding.

Description

technical field [0001] The invention belongs to the technical field of signal detection. Background technique [0002] Accurate direction finding is one of the most important technical indicators to measure the quality of a receiver. The direction finding error formula of the phase interferometer It can be seen that when the frequency is constant (that is, λ is constant) and the distance L between the antennas is constant, the direction finding error depends on the phase difference V of the two channels  , so accurate direction finding is to ensure the phase difference V of the two channels  minimum. At present, the commonly used measures are to compensate the system error or compensate the phase difference between the two channels with software methods, but these methods cannot achieve dynamic real-time compensation. Because active components and even passive components in the direction finding channel are affected by temperature and noise, the phase difference betwe...

Claims

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Application Information

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IPC IPC(8): H04B17/00H04B1/16H04B17/30
Inventor 司锡才郭立民郜丽鹏
Owner HARBIN ENG UNIV