CN103760541B - Interference waveform self-adaptation offset method and device for continuous wave detection - Google Patents
Interference waveform self-adaptation offset method and device for continuous wave detection Download PDFInfo
- Publication number
- CN103760541B CN103760541B CN201410009222.XA CN201410009222A CN103760541B CN 103760541 B CN103760541 B CN 103760541B CN 201410009222 A CN201410009222 A CN 201410009222A CN 103760541 B CN103760541 B CN 103760541B
- Authority
- CN
- China
- Prior art keywords
- signal
- module
- interference
- processing module
- echo
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/41—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00 using analysis of echo signal for target characterisation; Target signature; Target cross-section
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/36—Means for anti-jamming, e.g. ECCM, i.e. electronic counter-counter measures
Abstract
The invention discloses an interference waveform self-adaptation offset method for continuous wave detection. The method comprises the first step of performing initializing; the second step of shielding a target echo signal; the third step of carrying out transmitting, receiving and primary offset; the fourth step of judging whether a detection period includes training time or not, wherein if yes, a detection target echo is shielded, and the fifth step is executed, and if not, the shielding on a detection target is cancelled, and the sixth step is executed; the fifth step of carrying out training, namely, a digital signal processing module trains an interference transfer function according to a sent signal and the echo signal and executes the third step; the sixth step of carrying out secondary offset. The invention further discloses an interference waveform self-adaptation offset device for continuous wave detection. The device comprises a transmitting module, a transmitting antenna, a receiving antenna, an interference offset module, a receiving processing module and the digital signal processing module. The method and device have the advantages of being high in electrical level self-adaptation, good in effect, convenient to achieve, capable of achieving the system easily, stable, reliable and the like.
Description
Technical field
The present invention relates to a kind of continuous wave Detection Techniques, detect interference waveform adaptive cancellation particularly to a kind of continuous wave
Method and device.
Background technology
Developing rapidly with electronic information technology, wireless exploration is widely used to railway traffic, power equipment, bridge
The detection of all kinds of infrastructure and the early warning such as building, the industrial products matter such as aircraft, auto parts and components, pressure vessel, oil and gas pipes
Amount detection, bio-tissue detection and all conglomeraties such as early warning, in national defense construction, national economy, people's lives and science and technology
Play irreplaceable effect etc. every field.
Continuous wave wireless exploration has certain superiority compared with the detectable signal of other forms.Continuous wave detects first
When having larger pulsewidth, width amasss, thus having higher sensitivity and range resolution ratio, can measure close distance, and
Average emitted power is low；Secondly, electron tube can be replaced using microwave solid-state circuit, sensitive detection parts small volume, lightweight.
However, continuous wave detects in use, there is the root problem of its development of restriction, the i.e. leakage problem of signal.
The strong reflectance signal of the strong transmission signal, the strong echo-signal of close-in target and antenna house revealed from transmission channel can be to reception
Machine performance causes to have a strong impact on.For example, the distance of receiving channel and transmission channel is closer, if isolation ratio is relatively low, Qiang Fa
Penetrate signal and be released into receiver, saturation can be put in causing, even more so that microwave mixer or pre-low-noise amplifier saturation.
In addition, the echo amplitude of close-in target is big, the saturation of receiver also can be made cannot to work or flood distant object frequency spectrum and drop
Low radar range.
The existing method solving continuous wave leakage mainly has：1）Isolation：Improve the isolation between dual-mode antenna, reduce
The leakage of microwave device；2）Suppression：Select some transmission signals, such as sine FM signal simultaneously makes receiver select echo-signal
Higher hamonic wave come to suppress reveal；3）Offset：Based on the various cancellation techniques of hardware system, using suitable amplitude and phse conversion
Come to obtain equal with the co-channel interference signal amplitude of receiver end, opposite in phase offset signal, and interference signal offsets.
However, with current engineering technology level, continuous wave leakage will be solved and also there is much difficulties：
1）The transceiver insulation of microwave device is difficult to be made very high；
2）Detected from sine FM signal, receiver selects some harmonic components of echo-signal can make echo
The energy of signal has larger loss；
3）Traditional cancellation techniques carry out simple amplitude to transmission signal and the adjustment of phase place was entered with interference signal later
Row offsets, and precision is low, bad adaptability；And current cancellation techniques need the A/D of multichannel to change mostly, hardware requirement is higher.
Propose a kind of continuous wave radar feed-through nulling system and method in patent CN102023292, signal is divided into in-phase signal I to divide
Amount and orthogonal signalling Q component, the method real-time estimation needs to offset the I component of signal and Q component level, divides in two passages
Other signal is compensated.The method relatively to realize the estimation of interference level by hardware, needs multi-channel A/D and D/A, realizes
Complex, and estimated level can not approximation signal waveform change in real time.
Content of the invention
The primary and foremost purpose of the present invention is to overcome the shortcomings of that existing continuous wave reveals cancellation techniques, proposes a kind of continuous wave and visits
Survey interference waveform adaptive cancellation method, the method first adaptively estimates the transmission function of EVAC in detection, according to
Transmission signal and this transmission function obtain the estimated value of interference signal, complete interference signal one-level in reception processing front end and offset,
Complete two grades of counteractings of interference signal in signal processing module.
Another object of the present invention is to overcoming the shortcomings of that existing continuous wave reveals cancellation techniques, a kind of realization continuously is proposed
Ripple detects the device of interference waveform adaptive cancellation method, and this device can preferably eliminate interference.
The primary and foremost purpose of the present invention is achieved through the following technical solutions：A kind of continuous wave detects interference waveform adaptive cancellation
Method, comprises the following steps：
1st, initialize：System boot, wireless exploration systemic presupposition initial interference ssystem transfer function, execution step 2；
2nd, shield target echo signal, that is,：In the environment of so that system is operated in and does not have target echo；
3rd, transmitting, reception and one-level are offset：Digital signal processing module in wireless exploration system produces continuous wave signal,
And this signal is sent into transmitter module, meanwhile, detectable signal and EVAC are transferred function by convolution by signal processing module
Obtain interference signal waveform and deliver to Interference Cancellation module, send into one end of subtractor after D/A changer；Meanwhile, by receiving
Antenna receives echo to Interference Cancellation module, enters the other end of subtractor after low-pass filtering；Echo-signal and estimating
The interference signal waveform arriving passes through subtractor hardware and realizes offsetting, i.e. one-level Interference Cancellation；To complete after one-level Interference Cancellation
Echo-signal supplied with digital signal processing module after down conversion module, filter amplifier and A/D converter；
4th, judge whether the training time in detection cycle, if so, shielding detects target echo, and execution step 5；If no
It is to cancel to the shielding detecting target, execution step 6；
5th, train：Digital signal processing module, according to sending signal and echo-signal training disturbance transfer function, executes step
Rapid 3；
6th, secondary counteracting：Digital signal processing module judges whether comprise target echo in echo-signal, if comprising, enters
The secondary counteracting of row software, the signal after secondary counteracting can be used for subsequent treatment, and execution step 3；If not comprising, execution step 5.
The continuous wave of the present invention detects in interference waveform adaptive cancellation method, and each detection cycle is divided into the training time
T1 and detection time T2.
In training time T1, adaptively train using transmission signal and receipt signal in digital signal processing module
Acquistion is to EVAC transmission function.After described EVAC transmission function is description transmitting antenna transmission signal, direct wave
And the transmission function of the nearby channel that environment echo is experienced.This transmission function contains in transmission signal directly from transmitting sky
Line is leaked to reception antenna and the nearby impact to transmission signal for the environment echo.Process is：Shielding detects target echo, by counting
Word signal processing module produces digital continuous wave signal and sends into transmitter module, presets EVAC transmission function initial value simultaneously, by
Continuous wave signal is obtained interference signal with the effect of EVAC transmission function initial value convolution and estimates ripple by digital signal processing module
Shape sends into Interference Cancellation module.Continuous wave signal sends into transmitter module, is converted to analog baseband signal, up-conversion through D/A
Module by signal up-conversion to required radiofrequency signal, after low pass filter and power amplifier, by transmitting antenna spoke
It is shot out.Reception antenna receives echo-signal, and by this signal input to Interference Cancellation module.Subtraction in Interference Cancellation module
In device, echo-signal estimates waveform cancellation with the interference signal through D/A conversion, and the signal after Interference Cancellation is through reception processing
The down conversion module of module, filter amplifier and A/D conversion, are input to digital signal processing module.Digital signal processing module
According to the echo-signal of transmitting continuous wave signal and input, solve EVAC transmission function using software algorithm.
In detection time T2, cancel the shielding to target echo, digital continuous wave is produced by digital signal processing module
Signal sends into transmitter module, simultaneously by continuous wave signal and EVAC transmission function（I.e. the training time obtain up-to-date dry
Disturb ssystem transfer function）The estimation waveform that convolution effect obtains interference signal sends into Interference Cancellation module.Continuous wave signal is sent into
Transmitter module, is converted to analog baseband signal through D/A, up-converter module by signal up-conversion to required radiofrequency signal,
After low pass filter and power amplifier, it is radiate by transmitting antenna.Reception antenna receives echo-signal, and should
Signal input is to Interference Cancellation module.In Interference Cancellation module, interference signal inputs one end of subtractor after D/A conversion,
With the echo-signal waveform cancellation of the input subtractor other end, complete one-level Interference Cancellation, the signal after Interference Cancellation is through connecing
Receive down coversion, filter and amplification and the A/D conversion of processing module, be input to digital signal processing module.After one-level Interference Cancellation
Signal carries out two grades of Interference Cancellations by computed in software in digital signal processing module.
Another object of the present invention is achieved through the following technical solutions：One kind is realized continuous wave and is detected interference waveform self adaptation
Offset the device of method, including：Transmitter module, transmitting antenna, reception antenna, Interference Cancellation module, receiving processing module sum
Word signal processing module.Described transmitter module includes D/A converter, low pass filter, up-converter module, power amplifier.
Interference Cancellation module includes D/A converter, low pass filter and subtractor.Receiving processing module includes down conversion module, filtering
Amplifier and A/D converter.A/D and D/A converter realize the conversion between analog and digital signal, and D/A converter is by numeral
The digital signal of signal processing module output is converted into analog electrical signal, and analog electrical signal is converted into numeral letter by A/D converter
Number it is sent to digital signal processing module；Low pass filter completes the low-pass filtering of signal, filters high-frequency noise；Down conversion module
High-frequency signal is changed into low frequency baseband signal, up-converter module is used for for low frequency baseband signal being changed into high-frequency signal.
The operation principle of the present invention：The present invention produces transmitting continuous wave signal by software algorithm and exports；In each spy
The training time in survey cycle obtains EVAC transmission function using the training of the learning algorithms such as neutral net；Detect week at each
Phase, calculate interference signal and export according to EVAC transmission function and transmission signal；Realized dry by the method for computed in software
Disturb two grades of counteractings of waveform.
The present invention has such advantages as with respect to prior art and effect：
（1）ART network EVAC transmission function, provides interference signal waveform to eliminate, than only with amplitude and phase
Position or enter line level to offset strong adaptability, effect good；
（2）While eliminating interference, target reflection ripple will not be weakened；
（3）Hold before treatment, before echo-signal enters into power amplifier and A/D conversion, just actively counteract interference
Signal, is prevented effectively from operational amplifier, power amplifier and A/D conversion saturation；
（4）After signal input digital signal processing module, carry out hardware and software two-stage and offset, can preferably eliminate dry
Disturb.
（5）System only needs a road A/D conversion, and A/D converter is required to decline, and required A/D dynamic range is little, realizes
Convenient.
（6）System is realized simple, reliable and stable.
Brief description
Fig. 1 a is the system construction drawing of the interference signal active adaptive cancellation method realizing the present invention.
Fig. 1 b is the structure chart of transmitter module.
Fig. 1 c is the structure chart of interference cancellation module.
Fig. 1 d is the structure chart of receiving processing module.
Fig. 2 is the distribution diagram of detection cycle.
Fig. 3 is the workflow block diagram of present system.
Specific embodiment
With reference to embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention do not limit
In this.
Embodiment
As shown in Figure 1a, be interference signal active adaptive cancellation method of the present invention system construction drawing.This system includes
Transmitter module, transmitting antenna, reception antenna, interference cancellation module, receiving processing module and digital signal processing module.As figure
1b show the structure chart of transmitter module, as illustrated in figure 1 c for the structure chart of interference cancellation module, as shown in Figure 1 d for receiving area
The structure chart of reason module, transmitter module is made up of D/A converter, up-converter module, low-pass filtering module, power amplifier, does
Disturb and offset module and then have low pass filter and subtractor.Receiving processing module comprises down conversion module, filter amplifier and A/D and turns
Parallel operation.Digital signal processing module is all connected with transmitter module, interference cancellation module, receiving processing module.In transmitter module
The digital electric signal that digital signal processing module produces is converted into analogue signal by D/A converter；Up-converter module is changed with D/A
Module is connected, by analogue signal up-conversion to required radiofrequency signal；Radiofrequency signal carries out low pass filtered through low pass filter
Ripple, and radiated by transmitting antenna after power amplifier.After reception antenna receives echo-signal, input nonlinearities offset module.
Meanwhile, digital signal processing module obtains interference signal according to EVAC transmission function and transmission signal, and inputs dry
Disturb and offset module.In interference cancellation module, the echo-signal through low-pass filtering and the interference signal through D/A converter are passed through
Subtractor offsets, subtractor output signal input to receiving processing module, in receiving processing module signal through down coversion
Supplied with digital signal processing module after module, filter amplifier and A/D converter.
As shown in Fig. 2 being the distribution diagram of detection cycle.The front T1 of detection cycle（For example：Take 30ms）Time, described system
Shielding detects target, and training study obtains real-time EVAC transmission function.T2 after detection cycle（For example：70ms）Time,
Described system works under detecting target environment.Each detection cycle, system all adaptively trains learning interference systems communicate
Function.The detection time T2 of each detection cycle, digital signal processing module judges whether comprise target in the signal receiving
Echo, if not comprising, this data can be used for training EVAC transmission function.
The generation of system transmission signal, the transmission function training study of EVAC and interference signal estimate the calculating of waveform
All realize in digital signal processing unit.
Described preset EVAC transmission function initial value, can using system last time training result as initial value or
With all-pass system transmission function as initial value.
As shown in figure 3, being to realize the FB(flow block) that continuous wave detects interference active adaptive cancellation method.We tie below
That closes that accompanying drawing illustrates the present invention realizes flow process：
Step 1：Initialization：System start-up, in preset EVAC transmission function h (n) of digital signal processing module；
Step 2：System mask detects target echo；
Step 3：Transmitting, reception and one-level Interference Cancellation：Digital signal processing module produces single-frequency continuous wave signal x (n),
Deliver to transmitter module；Meanwhile, calculate interference signal estimated value：
xDisturb(n)=x (n) * h (n),（Formula 1）
Interference signal estimated value obtains x after changing by D/ADisturbT () delivers to Interference Cancellation module.Reception antenna receipt signal
And deliver to Interference Cancellation module, echo-signal yrT () and interference signal estimate that waveform subtracts each other at subtractor, obtain one-level interference
Signal y after counteracting1(t)：
y1(t)=yr(t)-xDisturb(t),（Formula 2）
If the error that analog subtracter causes is Δ (t).Signal y after Interference Cancellation1(t) through receiving processing module,
Digital signal y (n) after process reaches digital signal processing module；
Step 4：Judge whether the training time being in detection cycle, if so, shielding detects target echo, execution step
5；If it is not, detection system is cancelled shielding to target echo, execution step 6；
Step 5：Training study：Digital signal processing module according to signal x (n) producing and signal y (n) that receives,
Using neural network algorithm train study, obtain ssystem transfer function h (n), according to system block diagram it is known that：
y(n)=[x(n)*h1(n)-x(n)*h(n)]*h2(n),（Formula 3）
Wherein, h1N () refers to that transmitter module, transmitting antenna, wireless transmission channel, reception antenna and interference eliminate before
The transmission function of the channel that low-pass filtering module is constituted, h2N () refers to the ssystem transfer function of receiving processing module, training
In the case that target is such that in not having target echo, signal y (n) energy that digital signal processing module receives is minimum, that is,：
X (n) known to digital signal processing module and y (n), iterative formula（4）, obtain h (n), mushing error is：
e(n)=y(n)-[x(n)*h1(n)-x(n)*h(n)]*h2(n),
Execution step 3；
Step 6：Two grades of Interference Cancellations：Carry out judging whether containing target echo in digital signal processing unit.If no
Target echo, execution step 5；If having, secondary counteracting y is obtained by computed in software2N (), the algorithm of secondary counteracting is：
y2(n)=y(n)-Δ(n)*h2(n),
Signal after Interference Cancellation can be used for subsequent treatment, detection system execution step 3.
Above-described embodiment is the present invention preferably embodiment, but embodiments of the present invention are not subject to above-described embodiment
Limit, other any spirit without departing from the present invention and the change made under principle, modification, replacement, combine, simplify,
All should be equivalent substitute mode, be included within protection scope of the present invention.
Claims (5)
1. a kind of continuous wave detects interference waveform adaptive cancellation method, detects interference waveform adaptive cancellation dress based on continuous wave
Put, this device includes：Transmitter module, transmitting antenna, reception antenna, Interference Cancellation module, receiving processing module and digital signal
Processing module；
Described transmitter module includes D/A converter, low pass filter, up-converter module and power amplifier；
Described Interference Cancellation module includes D/A converter, low pass filter and subtractor；
Described receiving processing module includes down conversion module, filter amplifier and A/D converter；A/D and D/A converter are realized
Conversion between analog and digital signal, the digital signal that digital signal processing module exports is converted into simulating by D/A converter
The signal of telecommunication, analog electrical signal is converted into digital signal and is sent to digital signal processing module by A/D converter；Low pass filter is used
In completing the low-pass filtering of signal and filter high-frequency noise；
Described down conversion module is used for for high-frequency signal being changed into low frequency baseband signal, and described up-converter module is used for low frequency
Baseband signal is changed into high-frequency signal；
It is characterized in that, comprise the following steps：
Step 1, initialization：System boot, wireless exploration systemic presupposition initial interference ssystem transfer function, execution step 2；
Step 2, shielding target echo signal；
Step 3, transmitting, reception and one-level are offset；Digital signal processing module in wireless exploration system produces continuous wave signal,
And this signal is sent into transmitter module, meanwhile, detectable signal and EVAC are transferred function by convolution by signal processing module
Obtain interference signal waveform and deliver to Interference Cancellation module, send into one end of subtractor after D/A changer；Meanwhile, by receiving
Antenna receives echo to Interference Cancellation module, enters the other end of subtractor after low-pass filtering；Echo-signal and estimating
The interference signal waveform arriving passes through subtractor hardware and realizes offsetting, i.e. one-level Interference Cancellation；To complete after one-level Interference Cancellation
Echo-signal supplied with digital signal processing module after down conversion module, filter amplifier and A/D converter；
Step 4, judge whether training time of being in detection cycle, if so, shielding detects target echo, and execution step 5；
Otherwise, cancel to the shielding detecting target, execution step 6；
Step 5, training：Digital signal processing module, according to sending signal and echo-signal training disturbance transfer function, executes step
Rapid 3；
Step 6, secondary counteracting：Digital signal processing module judges whether comprise target echo in echo-signal, if comprising, enters
The secondary counteracting of row software, obtains secondary counteracting by computed in software, the signal after secondary counteracting can be used for subsequent treatment, and executes
Step 3；Otherwise, execution step 5.
2. continuous wave according to claim 1 detects interference waveform adaptive cancellation method it is characterised in that described step
3 comprise the following steps：
Digital signal processing module in step 3-1, wireless exploration system produces continuous wave signal, and this signal is sent into transmitting
Module, meanwhile, detectable signal and EVAC are transferred function by convolution and obtain interference signal waveform and send by signal processing module
To Interference Cancellation module, send into one end of subtractor after D/A changer；And, echo is received to interference by reception antenna
Cancellation module, enters the other end of subtractor after low-pass filtering；
The interference signal waveform that step 3-2, echo-signal and estimation obtain passes through subtractor hardware and realizes offsetting, that is,：One-level is supported
Disappear；
Step 3-3, will complete one-level offset after echo-signal after down conversion module, filter amplifier and A/D converter
Supplied with digital signal processing module.
3. continuous wave according to claim 1 detects interference waveform adaptive cancellation method it is characterised in that in step 4
In, each described detection cycle is divided into training time T1 and detection time T2.
4. continuous wave according to claim 3 detects interference waveform adaptive cancellation method it is characterised in that described
In training time T1, study is adaptively trained to be disturbed using transmission signal and receipt signal in digital signal processing module
Ssystem transfer function；After described EVAC transmission function is description transmitting antenna transmission signal, direct wave and nearby ring
The transmission function of the channel that border echo is experienced；Described transmission function contains in transmission signal and is directly leaked to from transmitting antenna
Reception antenna and the nearby impact to transmission signal for the environment echo；Process is：Shielding detects target echo, by digital signal
Reason module produces digital continuous wave signal and sends into transmitter module, presets EVAC transmission function initial value, by digital signal simultaneously
Continuous wave signal and the effect of EVAC transmission function initial value convolution are obtained interference signal and estimate that waveform feeding is dry by processing module
Disturb cancellation module；Continuous wave signal sends into transmitter module, is converted to analog baseband signal through D/A, up-converter module will be believed
Number up-conversion, to required radiofrequency signal, after low pass filter and power amplifier, is radiate by transmitting antenna；Connect
Receive antenna and receive echo-signal, and by this signal input to Interference Cancellation module；In the subtractor of Interference Cancellation module, echo
Signal estimates waveform cancellation with the interference signal through D/A conversion, and the signal after Interference Cancellation is under receiving processing module
Frequency-variable module, filter amplifier and A/D conversion, are input to digital signal processing module；Digital signal processing module is according to transmitting
Continuous wave signal and the echo-signal of input, solve EVAC transmission function using software algorithm.
5. continuous wave according to claim 3 detects interference waveform adaptive cancellation method it is characterised in that described
In detection time T2, cancel the shielding to target echo, digital continuous wave signal feeding is produced by digital signal processing module and sends out
Penetrate module, the estimation waveform simultaneously with the effect of EVAC transmission function convolution, continuous wave signal being obtained interference signal is sent into
Interference Cancellation module；Continuous wave signal sends into transmitter module, is converted to analog baseband signal through D/A, and up-converter module will
Signal up-conversion, to required radiofrequency signal, after low pass filter and power amplifier, is radiate by transmitting antenna；
Reception antenna receives echo-signal, and by this signal input to Interference Cancellation module；In Interference Cancellation module, interference signal is passed through
Input one end of subtractor, the echo-signal waveform cancellation with the input subtractor other end after D/A conversion, complete one-level and offset,
Signal after Interference Cancellation, through the down coversion of receiving processing module, filter and amplification and A/D conversion, is input to Digital Signal Processing
Module；Signal after one-level is offset carries out secondary counteracting by computed in software in digital signal processing module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410009222.XA CN103760541B (en) | 2014-01-08 | 2014-01-08 | Interference waveform self-adaptation offset method and device for continuous wave detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410009222.XA CN103760541B (en) | 2014-01-08 | 2014-01-08 | Interference waveform self-adaptation offset method and device for continuous wave detection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103760541A CN103760541A (en) | 2014-04-30 |
| CN103760541B true CN103760541B (en) | 2017-02-08 |
Family
ID=50527808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410009222.XA Expired - Fee Related CN103760541B (en) | 2014-01-08 | 2014-01-08 | Interference waveform self-adaptation offset method and device for continuous wave detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103760541B (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104391278A (en) * | 2014-09-02 | 2015-03-04 | 武汉滨湖电子有限责任公司 | Radar anti-interference method by utilizing polarization cancellation |
| CN106443658B (en) * | 2016-09-09 | 2018-11-09 | 电子科技大学 | A kind of low coverage radar sensor and its distance measuring method |
| DE102017206480B3 (en) * | 2017-04-18 | 2018-06-14 | Audi Ag | Method for operating a capacitive rain sensor of a motor vehicle, measuring signal interference suppression device and motor vehicle with such a measurement signal interference suppression device |
| US10594358B2 (en) * | 2017-04-21 | 2020-03-17 | Futurewei Technologies, Inc. | Leakage signal cancellation |
| EP3396398B1 (en) * | 2017-04-27 | 2020-07-08 | Rohde & Schwarz GmbH & Co. KG | Signal correction method, system for correcting a measured signal, as well as oscilloscope |
| CN109286464B (en) * | 2017-07-21 | 2022-02-18 | 南京理工大学 | System for testing anti-active interference intermediate frequency signal processing performance of continuous wave frequency modulation detection |
| CN109283494A (en) * | 2017-12-13 | 2019-01-29 | 武汉滨湖电子有限责任公司 | The high-power transmitting leakage of bistatic continuous wave radar inhibits device and suppressing method |
| CN108089170B (en) * | 2017-12-16 | 2021-08-03 | 贵州航天电子科技有限公司 | Digital processing-based method for inhibiting antenna leakage |
| CN109977350B (en) * | 2017-12-27 | 2023-01-24 | 核动力运行研究所 | Ultrasonic eddy current signal self-adaptive radial basis function neural network cancellation method |
| EP3769574A4 (en) | 2018-05-22 | 2021-05-19 | Samsung Electronics Co., Ltd. | Method for resource configuration, and device and storage medium thereof |
| CN110518933B (en) * | 2018-05-22 | 2023-03-07 | 北京三星通信技术研究有限公司 | Full-duplex transceiver, electronic device and interaction method |
| CN112713905B (en) * | 2020-12-02 | 2022-06-07 | 中科长城海洋信息系统有限公司 | Self-noise cancellation method, device, medium and equipment |
| CN113504537B (en) * | 2021-04-07 | 2022-07-15 | 湖南迈克森伟电子科技有限公司 | Radar ranging self-adaptive cancellation method |
| WO2023098809A1 (en) * | 2021-12-01 | 2023-06-08 | The University Of Hong Kong | Systems and methods for radio frequency interference suppression in radar |
| CN114355328B (en) * | 2021-12-29 | 2024-04-09 | 加特兰微电子科技(上海)有限公司 | Radar signal processing method, radio signal processing method and application device |
| CN115426071A (en) * | 2022-08-31 | 2022-12-02 | 中国联合网络通信集团有限公司 | Interference signal eliminating method, device and storage medium |
| CN115372920B (en) * | 2022-10-24 | 2023-01-17 | 北京清环智慧水务科技有限公司 | Radar condensation compensation method, device, equipment and storage medium |
-
2014
- 2014-01-08 CN CN201410009222.XA patent/CN103760541B/en not_active Expired - Fee Related
Non-Patent Citations (4)
| Title |
|---|
| 基于电荷耦合器件的动目标显示雷达滤波器;寇玉民等;《现代雷达》;20090630;第31卷(第6期);43-46 * |
| 宽带雷达目标射频仿真及其应用;陆智俊;《上海航天》;20120331;59-64 * |
| 毫米波防撞雷达二线检测系统设计;杨昌福等;《电讯技术》;20120331;第52卷(第3期);409-413 * |
| 雷达多目标模拟器DRFM单元设计;王展等;《计算机测量与控制》;20091231;1616-1619 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103760541A (en) | 2014-04-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103760541B (en) | Interference waveform self-adaptation offset method and device for continuous wave detection | |
| Korpi et al. | Adaptive nonlinear digital self-interference cancellation for mobile inband full-duplex radio: Algorithms and RF measurements | |
| US11923889B2 (en) | Leakage signal cancellation | |
| JP5703441B2 (en) | Radar equipment | |
| JP4994023B2 (en) | Pulse radar, automotive radar and landing assist radar | |
| JP5938737B2 (en) | Radar equipment | |
| CN104471881B (en) | Detection affects the intermodulation in broadband connections of receiver sensitivity | |
| CN106125052B (en) | Method and system for eliminating modulation leakage of linear frequency modulation continuous wave radar | |
| US20070018891A1 (en) | Time of arrival estimation mechanism | |
| KR20150105641A (en) | Self-adaptive radio-frequency interference cancelling device and method, and receiver | |
| US11428778B2 (en) | System and method for performing spillover cancellation | |
| Korpi et al. | Digital self-interference cancellation under nonideal RF components: Advanced algorithms and measured performance | |
| CN105812019B (en) | Zero notch bandwidth of one kind is adaptively from leakage signal suppressing method | |
| Kolodziej et al. | Simultaneous transmit and receive (STAR) system architecture using multiple analog cancellation layers | |
| CN104035079B (en) | A kind of signal performance compensation method of novel zero intermediate frequency pulse compression radar system | |
| CN101464514B (en) | Calibration method and calibration processor for step frequency radar system | |
| JP2017215208A (en) | Pulse radar | |
| EP2856656B1 (en) | Method, base station and apparatus in a base station for reducing intermodulation distortion | |
| CN112290974A (en) | Self-interference cancellation realization method and device and storage medium | |
| US20210373112A1 (en) | Compensating for crosstalk in determination of an angle of arrival of an electromagnetic wave at a receive antenna | |
| CN101154983B (en) | Implementing method for anti-interference technology of satellite communication based on single-time sampling | |
| CN112379336A (en) | Radar signal detection method, device, equipment and storage medium | |
| Askar et al. | Agile full-duplex transceiver: The concept and self-interference channel characteristics | |
| CN114257255B (en) | Transmit spur detection and suppression for wireless communication devices | |
| JP5969372B2 (en) | Wireless communication apparatus and sensing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170208 Termination date: 20220108 |