CN109104205A - A kind of digital channelized receiver pulse detection system - Google Patents
A kind of digital channelized receiver pulse detection system Download PDFInfo
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- CN109104205A CN109104205A CN201811083835.2A CN201811083835A CN109104205A CN 109104205 A CN109104205 A CN 109104205A CN 201811083835 A CN201811083835 A CN 201811083835A CN 109104205 A CN109104205 A CN 109104205A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/1638—Special circuits to enhance selectivity of receivers not otherwise provided for
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
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- Monitoring And Testing Of Transmission In General (AREA)
Abstract
The invention discloses a kind of digital channelized receiver pulse detection systems, comprising: channel, modulo block (1), maximum value obtain module (2) and over-threshold detection module (3)；Wherein, the quantity of modulo block (1) is equal with channel quantity, and the signal amplitude of each channel is calculated using the I of n channel, Q signal, then look for the maximum value of n signal amplitude, maximum value is compared with fixed threshold, thresholding is crossed and is then judged to having signal, be otherwise no signal.The invention belongs to signal processing technology fields.The characteristics of present invention is according to signal judges the presence or absence of signal by finding the method that Amplitude maxima is compared with thresholding, reduces false-alarm probability, while also saving a large amount of hardware resource.
Description
Technical field
The present invention relates to a kind of pulse detection system, especially a kind of digital channelized receiver pulse detection system.
Background technique
Modern electromagnetic signal environment becomes increasingly complex intensively, it is desirable that EW receiver must have very wide processing band
The ability that width, high sensitivity, Larger Dynamic range, multi signal parallel processing and bulk information are handled in real time.And digital channelizing connects
Receipts machine not only can preferably meet above-mentioned requirements, can also be achieved the all-probabity interception of monitoring channel signal.
The data of N number of channel after channelizing export simultaneously, and signal is ignorant in which channel.Traditional channel inspection
Survey method includes tim e- domain detection method, frequency domain detection method and Autocorrelation Detection method.Tim e- domain detection method is easy to produce false-alarm, in noise
Testing result is very unsatisfactory when relatively low.Frequency domain detection method needs are FFT to the output of all channels, can be using very much
FPGA resource, it is more wasteful.Autocorrelation Detection method is also required to use more multiplier and adder resource.
Summary of the invention
It is an object of that present invention to provide a kind of digital channelized receiver pulse detection systems, improve the sensitivity of system,
Reduce the generation of false-alarm probability.
A kind of digital channelized receiver pulse detection system, comprising: channel, modulo block, maximum value obtain module and
Over-threshold detection module.Wherein, the quantity of modulo block is equal with channel quantity.
The input terminal of the n modulo block is connected with the I of n channel, Q signal output end respectively, n modulo block
The input terminal that output end obtains module with maximum value is connected, and maximum value obtains the output end and over-threshold detection module of module
Input terminal is connected.
When detection system works, I, the Q signal exported first by modulo block to n channel carries out modulus, obtains n letter
The signal amplitude A in roadn；Then module is obtained to the amplitude A of each channel of acquisition by maximum valuenIt is compared processing, obtains n
Maximum value A in a channel magnitudemaxChannel corresponding with its；Later, by over-threshold detection module in n channel magnitude
Maximum value AmaxIt is compared with the thresholding set, works as AmaxWhen greater than thresholding, then determines that the channel has signal, work as AmaxIt is less than
When equal to thresholding, then determine that the channel does not have signal.When there is a signal input, then by over-threshold detection module to n channel
Signal amplitude in amplitude is successively chosen a channel magnitude value from big to small and is compared with the thresholding set, for being greater than
The channel of thresholding is judged as the channel of signal, and the channel for being less than thresholding is judged as the channel of not signal.
The characteristics of present invention is according to signal judges signal by finding the method that Amplitude maxima is compared with thresholding
The presence or absence of, false-alarm probability is reduced, while also saving a large amount of hardware resource.
Detailed description of the invention
A kind of digital channelized receiver pulse detection system composition schematic diagram of Fig. 1.
1. 2. maximum value of modulo block obtains 3. over-threshold detection module of module
Specific embodiment
A kind of digital channelized receiver pulse detection system, comprising: channel, modulo block 1, maximum value obtain module 2
With over-threshold detection module 3.Wherein, the quantity of modulo block 1 is equal with channel quantity.
The input terminal of 16 modulo blocks 1 is connected with the I of 16 channels, Q signal output end respectively, 16 modulus moulds
The input terminal that the output end of block 1 obtains module 2 with maximum value is connected, and maximum value obtains the output end of module 2 and crosses thresholding inspection
The input terminal for surveying module 3 is connected.
When detection system works, I, the Q signal exported first by modulo block 1 to 16 channels carries out modulus, obtains 16
The signal amplitude A of a channel16；Then the amplitude A of each channel of 2 pairs of module acquisitions is obtained by maximum value16It is compared place
Reason, obtains the maximum value A in 16 channel magnitudesmaxChannel corresponding with its；Later, 16 are believed by over-threshold detection module 3
Maximum value A in road amplitudemaxIt is compared with the thresholding set, works as AmaxWhen greater than thresholding, then determine that the channel has signal,
Work as AmaxWhen less than or equal to thresholding, then determine that the channel does not have signal.When the signal of input is for two signals and all in 16 channels
When in the frequency domain for including, then by over-threshold detection module 3 in 16 channel magnitudes signal amplitude choose maximum value and
Second largest value, and be compared with the thresholding set, the channel for being greater than thresholding is judged as the channel of signal, for small
The channel of not signal is judged as in the channel of thresholding.
Claims (3)
1. a kind of digital channelized receiver pulse detection system, characterized by comprising: channel, modulo block (1), maximum value
Obtain module (2) and over-threshold detection module (3)；Wherein, the quantity of modulo block (1) is equal with channel quantity；
The input terminal of the n modulo block (1) is connected with the I of n channel, Q signal output end respectively, n modulo block (1)
Output end with maximum value obtain module (2) input terminal be connected, maximum value obtain module (2) output end and cross thresholding examine
The input terminal for surveying module (3) is connected.
2. digital channelized receiver pulse detection system according to claim 1, which is characterized in that the detection system
When work, I, the Q signal exported first by modulo block (1) to n channel carries out modulus, obtains the signal amplitude of n channel
An；Then module (2) are obtained to the amplitude A of each channel of acquisition by maximum valuenIt is compared processing, obtains n channel magnitude
In maximum value AmaxChannel corresponding with its；Later, by over-threshold detection module (3) to the maximum value in n channel magnitude
AmaxIt is compared with the thresholding set, works as AmaxWhen greater than thresholding, then determines that the channel has signal, work as AmaxLess than or equal to door
In limited time, then determine that the channel does not have signal.
3. digital channelized receiver pulse detection system according to claim 2, which is characterized in that when there is a signal
When input, then a channel is successively chosen from big to small to the signal amplitude in n channel magnitude by over-threshold detection module (3)
Range value is compared with the thresholding set, and the channel for being greater than thresholding is judged as the channel of signal, for being less than
The channel of thresholding is judged as the channel of not signal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811083835.2A CN109104205A (en) | 2018-09-14 | 2018-09-14 | A kind of digital channelized receiver pulse detection system |
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| CN201811083835.2A CN109104205A (en) | 2018-09-14 | 2018-09-14 | A kind of digital channelized receiver pulse detection system |
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| CN109104205A true CN109104205A (en) | 2018-12-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110082732A (en) * | 2019-05-13 | 2019-08-02 | 北京遥感设备研究所 | A kind of synchronization bait decision-making system and method calculated based on covariance multiple in arteries and veins |
| CN113259024A (en) * | 2021-05-31 | 2021-08-13 | 中国人民解放军空军预警学院 | Threshold prediction adjustment method for amplitude of digital channelized receiver |
Citations (3)
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| CN106483508A (en) * | 2016-11-17 | 2017-03-08 | 中国电子科技集团公司第四十研究所 | One kind is for arriving signal detection method while digital channelized receiver |
| CN106896346A (en) * | 2017-03-13 | 2017-06-27 | 中国电子科技集团公司第三十八研究所 | A kind of low signal-to-noise ratio Complex Radar pulse envelope signal detecting method and device |
| CN107329123A (en) * | 2017-07-05 | 2017-11-07 | 中国电子科技集团公司第三十八研究所 | A kind of weak radar pulse envelope signal detecting method and device |
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2018
- 2018-09-14 CN CN201811083835.2A patent/CN109104205A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106483508A (en) * | 2016-11-17 | 2017-03-08 | 中国电子科技集团公司第四十研究所 | One kind is for arriving signal detection method while digital channelized receiver |
| CN106896346A (en) * | 2017-03-13 | 2017-06-27 | 中国电子科技集团公司第三十八研究所 | A kind of low signal-to-noise ratio Complex Radar pulse envelope signal detecting method and device |
| CN107329123A (en) * | 2017-07-05 | 2017-11-07 | 中国电子科技集团公司第三十八研究所 | A kind of weak radar pulse envelope signal detecting method and device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110082732A (en) * | 2019-05-13 | 2019-08-02 | 北京遥感设备研究所 | A kind of synchronization bait decision-making system and method calculated based on covariance multiple in arteries and veins |
| CN113259024A (en) * | 2021-05-31 | 2021-08-13 | 中国人民解放军空军预警学院 | Threshold prediction adjustment method for amplitude of digital channelized receiver |
| CN113259024B (en) * | 2021-05-31 | 2021-10-08 | 中国人民解放军空军预警学院 | Threshold prediction adjustment method for amplitude of digital channelized receiver |
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