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Radar communication integrated waveform generation method based on FMCW

A waveform generation and radar technology, applied in the direction of phase modulation carrier system, etc., can solve the problems of high cost, electromagnetic interference, etc., and achieve the effect of ensuring real-time transmission and transmission rate

Inactive Publication Date: 2017-06-30
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the shortcomings of existing radar and communication systems that occupy too many resources, have high cost, and are prone to electromagnetic interference, and propose a radar communication integrated waveform generation method based on FMCW

Method used

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  • Radar communication integrated waveform generation method based on FMCW
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  • Radar communication integrated waveform generation method based on FMCW

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specific Embodiment approach 1

[0025] Specific Embodiments Specific Embodiment One: Combining Figure 6 Describe this embodiment, a kind of FMCW-based radar communication integrated waveform generation method of this embodiment is specifically carried out according to the following steps:

[0026] Step 1, generating radar chirp frequency modulated continuous wave (FMCW);

[0027] Step 2, generating communication data, performing QPSK modulation on the communication data, and obtaining modulated communication data;

[0028] Step 3, load the modulated communication data onto the radar chirp frequency modulated continuous wave (FMCW), and generate the radar communication integrated waveform QPSK-FMCW signal s(t);

[0029] QPSK is Quadrature Phase Shift Keying.

specific Embodiment approach 2

[0030] Specific embodiment two: the difference between this embodiment and specific embodiment one is: generate radar chirp frequency-modulated continuous wave (FMCW) in the described step one; Concrete process is:

[0031] Considering that the shared signal needs to realize target detection and communication functions at the same time, the present invention selects the quadrature phase shift keying (QPSK) modulation method to realize data transmission, and selects chirp frequency modulated continuous wave (FMCW) as the carrier of the signal to realize target detection. The signal generated in this way, referred to as QPSK-FMCW signal for short, is used as a common signal for radar and communication systems.

[0032] FMCW signal has no distance blind zone, multi-target detection characteristics, and can realize the advantages of high-resolution detection and precise positioning of targets. The application of FMCW signal in the radar communication integrated system can effectiv...

specific Embodiment approach 3

[0038] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the communication data is generated in the step two, and it is QPSK modulated to obtain the modulated data; the specific process is:

[0039] Suppose the communication data symbol sequence to be transmitted is A=[a 1 ,a 2 ,...,a k ,...,a M ], k=1,2,...,M where a k Represents the kth symbol, which is quaternary data, a k ∈{0,1,2,3}. The communication data is QPSK modulated, then the modulation phase of the kth symbol is The modulated data is exp{jθ k}.

[0040] Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention relates to a radar communication integrated waveform generation method based on a FMCW, and aims at solving the problems that a conventional radar and communication system occupies excessive resources, is higher in cost and is liable to generate electromagnetic interference. The specific process comprises the steps: 1, generating a radar linear FMCW (Frequency Modulated Continuous Wave); 2, generating communication data, carrying out the QPSK modulation of the communication data, and obtaining the modulated communication data; 3, loading the modulated communication data to the radar linear FMCW, and generating a radar communication integrated QPSK-FMCW signal s(t), wherein the QPSK is quadrature phase shift keying. The method is used in the field of radar communication.

Description

technical field [0001] The invention relates to a radar communication integrated waveform generation method based on FMCW. Background technique [0002] In recent years, radar communication integration technology has received widespread attention due to its ability to realize target detection and data transmission functions simultaneously. Realizing the integration of radar and communication system is helpful to realize generalization, miniaturization and multi-functionalization of equipment, avoid excessive occupation of resources and reduce cost, which has very important practical significance. [0003] At present, there are mainly two methods to realize the integration of radar communication system: one is that the radar and communication functions share the hardware system, but the radar and communication signals are transmitted separately to realize the corresponding functions; the other method is that the radar and communication functions The hardware system and the t...

Claims

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Application Information

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IPC IPC(8): H04L27/20
CPCH04L27/20
Inventor 徐亮姜义成
Owner HARBIN INST OF TECH
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