Method for detecting non-cooperation pulse compression radar weak target based on wavelet denoising
A pulse compression radar and weak target technology, which is applied in radio wave measurement systems, radio wave reflection/reradiation, and measurement devices, etc., can solve the problems of echo signal spectrum aliasing and cannot be effectively removed, and achieve improved signal-to-noise Ratio, small amount of data processing, and the effect of simplifying the processing flow
Active Publication Date: 2017-06-13
NAT UNIV OF DEFENSE TECH
4 Cites 11 Cited by
AI-Extracted Technical Summary
Problems solved by technology
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreMethod used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreAbstract
The invention belongs to the technical field of radar signal processing, and particularly relates to a method for detecting a non-cooperation pulse compression radar weak target based on wavelet denoising. The method is characterized in that an echo signal with noise is not directly denoised, but the matched and filtered peak envelope is used as a processed object; an envelope main lobe of the matched and filtered echo signal is remained by the wavelet denoising; after the envelope main lobe of the echo signal is decomposed by wavelets of various scales, the energy is mainly centralized at the low-frequency part, only the setting threshold value of the low-frequency wavelet coefficient after wavelet decomposing is screened, the other decomposing layers are zeroed, then the envelope main lobe of the echo signal is remained, and most of noise is filtered, so as to effectively accumulate the energy of the echo signal through Radon conversion. The method has the advantages that the influence caused by the in-band noise of the echo signal can be eliminated, the signal and noise ratio of the echo signal is improved, the linear detection method can effectively accumulate the target echo energy, the detection probability is finally improved, and the weak target is detected.
Application Domain
Technology Topic
Image
Examples
- Experimental program(1)
Example Embodiment
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more PUM


Description & Claims & Application Information
We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more Similar technology patents
Display device
InactiveUS20140145996A1Improve signal-to-noise ratioImprove accuracyStatic indicating devicesInput/output processes for data processingExecution controlLiquid-crystal display
Owner:SHARP KK
Method for optically measuring distance
InactiveUS6836317B1Improve signal to noise ratioOptical rangefindersElectromagnetic wave reradiationPhysicsTime windows
Owner:PERGER ANDREAS
Rotary position detector and associated methods
ActiveUS7688432B1Low inertia operationImprove signal-to-noise ratioAngle measurementUsing optical meansMotor shaftOptoelectronics
Owner:BENNER JR WILLIAM R
Dynamic optical reflector and interrogation system
ActiveUS20060215147A1Increase signal ratioImprove signal-to-noise ratioOptical rangefindersElectromagnetic transmissionEngineeringLight beam
Owner:QINETIQ LTD
Multi-wavelength Brillouin optical time domain analyzer
InactiveCN103115632AIncrease total optical powerImprove signal-to-noise ratioSpecial purpose recording/indication apparatusOptical pathSignal-to-noise ratio (imaging)
Owner:NANJING UNIVERSTIY SUZHOU HIGH TECH INST +1
Classification and recommendation of technical efficacy words
- Improve signal-to-noise ratio
- Improve the probability of detection
Magnetic tape, its cleaning method, and optical servotrack forming/cleaning apparatus
InactiveUS7803471B1Improve signal-to-noise ratioDecreasing rate of fluctuationMagnetic materials for record carriersReconditioning/cleaning record carriersReflectivityMaximum rate
Owner:FUJIFILM CORP
System for generating thermographic images using thermographic signal reconstruction
ActiveUS20050008215A1Reduce size and complexityImprove signal-to-noise ratioCharacter and pattern recognitionMaterial flaws investigationSignal reconstructionThermographic imaging
Owner:THERMAL WAVE IMAGING
Hyper-spectral imaging methods and devices
InactiveUS20050270528A1Improve signal to noise ratioSmall bandwidthRadiation pyrometrySpectrum generation using diffraction elementsSpectral imagingLight spectrum
Owner:PLAIN SIGHT SYST
Time-interleaved analog-to-digital conversion apparatus
InactiveUS20090256734A1Improve signal-to-noise ratioElectric signal transmission systemsAnalogue-digital convertersA d converterAnalog to digital conversion
Owner:NOVATEK MICROELECTRONICS CORP