Sampling Method of UWB Chirp Signal Based on Bilinear Transform
A technology of linear frequency modulation signal and bilinear transformation, which is applied in the field of communication and radar, can solve the problems of inability to obtain broadband signal transmitter parameters, large amount of calculation for single matching, and inability to reduce the calculation cost of detection methods, etc., to achieve good real-time performance , processing speed and low complexity effects
Inactive Publication Date: 2016-06-29
XIDIAN UNIV
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, the disadvantage of this method is that for non-cooperative broadband signal reconnaissance, the calculation cost of the detection method cannot be reduced due to the inability to obtain the parameters of the broadband signal transmitter
If the transmitter parameters are obtained by other reconnaissance means, the reconstructed stop condition only reduces the number of matching times, and does not adopt any method to reduce the number of dictionary elements, which cannot solve the problem of a large amount of calculation for a single matching
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
[0043] The present invention will be further described below in conjunction with the accompanying drawings.
[0044] refer to figure 1 , the specific implementation steps of the present invention are as follows:
[0045] Step 1, generate a local oscillator signal.
[0046] The parameters of the simulated UWB chirp signal are acquired by the measurement equipment. The parameters include frequency modulation slope, carrier frequency, initial frequency and pulse width, and the frequency modulation slope, carrier frequency, initial frequency and pulse width of the analog ultra-wideband linear frequency modulation signal are set according to the above parameters.
[0047]Pass the carrier frequency of the set analog UWB chirp signal into the local oscillator of the superheterodyne receiver, and the local oscillator of the superheterodyne receiver sets the voltage according to the carrier frequency of the incoming analog UWB chirp signal to control the oscillation circuit to genera...
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 an ultra-wideband linear frequency-modulated signal sampling method based on bilinear transformation and mainly aims at solving the problem of high sampling rate of a front-end analogue-digital converter on wideband signals in the prior art. The ultra-wideband linear frequency-modulated signal sampling method based on bilinear transformation comprises the implementation steps of (1) generating a local oscillating signal, (2) detecting, (3) synthesizing a reference signal, (4) performing dechirping transformation, (5) performing low-speed sampling, (6) performing interpolation, (7) synthesizing a conjugate reference signal, and (8) performing linear frequency modulation transformation. The ultra-wideband linear frequency-modulated signal sampling method based on bilinear transformation has the advantages that the reconstruction problem of an original ultra-wideband signal is converted into the problem of recovering the original ultra-wideband signal by use of a reference signal and the conjugate reference signal by virtue of dechirping transformation and linear frequency modulation transformation, and the sampling of analogue ultra-wideband linear frequency-modulated signals under the condition of a low sampling rate is realized.
Description
technical field [0001] The technical invention belongs to the field of communication technology, and further relates to a method for sampling ultra-wideband chirp signals using bilinear transformation in the field of radar technology. The present invention can be used for signal extraction of imaging radar adopting ultra-wideband chirp signal, dechirping and converting wideband signal into narrowband signal, performing orthogonal sampling, performing chirp after interpolation in digital domain to recover original broadband signal, for this The broadband signal is frequency shifted or time delayed to spoof the imaging radar. Background technique [0002] Imaging radar can image the target with high resolution, obtain more target information, and classify and identify the target, so it is widely used in modern radar. [0003] Jamming can generally be divided into suppressing jamming and spoofing jamming. At present, the suppressing jamming for imaging radar generally includes...
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): G01S7/38G01S13/89
CPCG01S7/38
Inventor 董春曦黄龙程亚娇赵国庆饶鲜沈志博张伟郜宪锦
Owner XIDIAN UNIV
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Try Eureka
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap