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Arbitrary frequency domain shape real signal waveform modulation technology

A modulation technology, real signal technology, applied in advanced technology, modulation carrier system, sustainable communication technology, etc., can solve the problem of lack of flexibility in frequency domain design waveform

Active Publication Date: 2022-06-28
中达天昇(江苏)电子科技有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As the electromagnetic compatibility between airborne, shipborne, and vehicle-mounted radars and communications becomes more and more serious, the confrontation between radar and radar anti-jamming, communication and communication anti-jamming becomes more and more severe. The existing time-domain modulation Waveform generation technology is increasingly unable to meet the requirements of radar waveforms, communication waveforms, and electronic anti-jamming waveforms in the frequency domain for arbitrary distribution, arbitrary maneuvering, and arbitrary jumps, and lacks the flexibility of designing waveforms in the frequency domain

Method used

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  • Arbitrary frequency domain shape real signal waveform modulation technology
  • Arbitrary frequency domain shape real signal waveform modulation technology
  • Arbitrary frequency domain shape real signal waveform modulation technology

Examples

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Embodiment

[0053] see figure 1 As shown, the present embodiment takes radar as an example, and the present invention provides a real signal waveform modulation technique of arbitrary frequency domain shape, which is characterized in that it includes the following steps:

[0054] S1. Determine the frequency domain range of the limited bandwidth of the waveform according to the requirement of the frequency domain energy distribution of the radar waveform.

[0055] If the radar needs its RF waveform in the frequency range of , the frequency energy distribution is , its internal IF to RF up-conversion local oscillator frequency is , then the demand for the frequency energy distribution of the waveform is , the frequency energy distribution is , that is, the finite bandwidth frequency range of the waveform is ;

[0056] If the RF waveform required by the radar is distributed over multiple narrow-band frequency ranges, such as: , the frequency energy distribution is , then the ...

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Abstract

The invention discloses an arbitrary frequency domain shape real signal waveform modulation technology, which comprises the following steps: S1, determining a waveform frequency domain range according to a waveform frequency domain shape; s2, determining a sampling rate of a digital-to-analog conversion device for generating the waveform according to a frequency domain range required by the waveform; s3, determining digital waveform parameters in combination with the sampling rate and the waveform time width; s4, modulating the subcarrier of the positive half axis of the frequency domain by using the envelope with the shape required by the waveform frequency domain; s5, determining frequency domain distribution of negative half-axis subcarriers according to a frequency domain conjugate symmetry principle; s6, completing the OFDM modulation; s7, the digital-to-analog conversion device completes conversion from the digital waveform to the analog waveform; and S8, filtering the simulation waveform to obtain a real signal simulation waveform in any frequency domain shape, and modulation of a radar real signal waveform, a communication real signal waveform and an electronic anti-interference real signal waveform in any frequency shape and frequency energy distribution can be realized.

Description

technical field [0001] The invention belongs to the technical field of waveform modulation, and in particular relates to a real signal waveform modulation technology of arbitrary frequency domain shape. Background technique [0002] As the electromagnetic compatibility problems between airborne, shipborne, and vehicle-mounted radars and communications become more and more severe, the confrontation between radar and radar anti-jamming, communication and communication anti-jamming is becoming more and more intense. Waveform generation technologies are increasingly unable to meet the needs of radar waveforms, communication waveforms, and electronic anti-jamming waveforms for arbitrary distribution, arbitrary maneuvering, and arbitrary jumping in the frequency domain, and lack the flexibility to design waveforms in the frequency domain. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to provide an arbitrary frequency domain shape real signal waveform ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/02G01S7/38H04L27/26
CPCG01S7/02G01S7/38H04L27/2628Y02D30/70
Inventor 周丽静丁旭东朱桂庭
Owner 中达天昇(江苏)电子科技有限公司
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