A two-dimensional micro-motion trajectory estimation method for vibrating targets
A two-dimensional micro-motion and target technology, applied to radio wave measurement systems, instruments, etc., can solve the problems of radar signal entanglement, inability to directly use ICCD algorithm, vibration signal decomposition, etc., and achieve the effect of decomposition
Active Publication Date: 2020-07-03
NAT SPACE SCI CENT CAS
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] The radar signal will be entangled, so the existing ICCD algorithm cannot decompose the vibration signal. Therefore, the current target micro-motion trajectory estimation method cannot directly use the ICCD algorithm
Method 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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0054] In order to better understand the technical solutions of the present invention, the implementation manners of the present invention will be further described below in conjunction with the accompanying drawings.
[0055] The present invention proposes a method for estimating a two-dimensional micro-motion trajectory of a vibrating target based on the Segmental Intrinsic Chirp Component Decomposition (hereinafter referred to as SICCD) algorithm (where the vibration parameters mainly refer to the vibration amplitude and period). Different micro-motion targets usually have different micro-motion features. By extracting the micro-motion features of the target, the target can be better identified and classified. The traditional single receiving antenna radar system can only obtain the information of the target along the line of sight of the radar, and cannot obtain the two-dimensional or three-dimensional micro-motion information of the target. The method proposed by the inve...
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
Login to View More Abstract
The invention discloses a method for estimating the two-dimensional micro-motion trajectory of a vibration target. The method comprises the steps of generating radio frequency radar signals, and transmitting the radio frequency radar signals through a transmitting antenna; receiving radar echoes of multiple targets by adopting three receiving antennas, wherein one of the receiving antennas is thetransmitting antenna; obtaining echo signals received by each antenna; segmenting each echo signal, performing ICCD (Intrinsic Chirp Component Decomposition) processing on each segmented echo signal,splicing the processed signals to obtain time domain signals with the same length with the original echo signals, and thus obtaining the phase of the signals; and calculating the interferometric phasebetween the signals obtained after processing the received echoes of the transmitting antenna and the signals obtained after processing the received echoes of the other two antennas so as to obtain the two-dimensional micro-motion trajectory of the vibration. According to the method, segmentation processing is performed on signals winding in a time-frequency diagram, and then vibration signals are decomposed by applying an ICCD algorithm. The method adopts three receiving antennas and then extracts the interferometric phase between the echo signals of the antennas so as to obtain the two-dimensional micro-motion trajectory of the vibration target.
Description
technical field [0001] The invention relates to the field of radar signal processing and micro-Doppler effect, and relates to a method for estimating a two-dimensional micro-movement track of a vibrating target. Background technique [0002] Vibration is a form of fretting, which has attracted a lot of attention in the last decade. The Doppler effect caused by fretting is called micro-Doppler effect (literature [1]: V.C.Chen, "Analysis of radar micro-Dopplersignature with time–frequency transform," in Proc.IEEE Statistical SignalArray Process.,2000, pp.463–466.; Literature [2]: V.C.Chen, F.Li, S.-S.Ho et al., “Analysis of micro-Doppler signatures,” Proc.Inst.Electr.Eng.—Radar SonarNavig. , vol.150, no.4, pp.271–276, Aug.2003. Literature [3]: T.Sparr and B.Krane, "Micro-Doppler analysis of vibrating targets in SAR," Proc.Inst.Electr. Eng.—RadarSonar Navig., vol.150, no.4, pp.277–283, Aug.2003. Literature [4]: V.C.Chen, F.Li, S.-S.Hoet al., "Micro-Doppler effect in radar:...
Claims
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 Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/41
CPCG01S7/41
Inventor 康文武张云华董晓
Owner NAT SPACE SCI CENT CAS