CN110113046A - Frequency source wireless synchronization and calibration method for high-resolution radar array system - Google Patents
Frequency source wireless synchronization and calibration method for high-resolution radar array system Download PDFInfo
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- CN110113046A CN110113046A CN201910304335.5A CN201910304335A CN110113046A CN 110113046 A CN110113046 A CN 110113046A CN 201910304335 A CN201910304335 A CN 201910304335A CN 110113046 A CN110113046 A CN 110113046A
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000001360 synchronised effect Effects 0.000 claims abstract description 34
- 239000000284 extract Substances 0.000 claims abstract description 3
- 230000010355 oscillation Effects 0.000 claims description 3
- 241000208340 Araliaceae Species 0.000 claims 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 claims 1
- 235000003140 Panax quinquefolius Nutrition 0.000 claims 1
- 235000008434 ginseng Nutrition 0.000 claims 1
- 238000003384 imaging method Methods 0.000 abstract description 7
- 230000001427 coherent effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
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- 239000004744 fabric Substances 0.000 description 1
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- 230000008569 process Effects 0.000 description 1
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Classifications
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- 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
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/89—Radar or analogous systems specially adapted for specific applications for mapping or imaging
-
- 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
- G01S7/03—Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver
-
- 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
- G01S7/40—Means for monitoring or calibrating
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
- H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
- H03L7/093—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal using special filtering or amplification characteristics in the loop
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
- H03L7/10—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range
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- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Radar, Positioning & Navigation (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The present invention discloses a kind of frequency source wireless synchronization and calibration method for high-resolution radar array system, it extracts and connects in the array system formed an array module as reference frequency source simultaneously tranmitting frequency signal by multiple array modules, it is that remaining array module receives reference frequency source signal through reflection and injects in the frequency source of array module itself in array system, keeps it synchronous with reference frequency signal.The present invention can pass through itself transmitting unit tranmitting frequency signal in system, all units receive signal simultaneously in array system, and array module frequency source corresponding with itself is connected, and realizes the synchronization of all frequency sources in array system, improves the performance of coherent radar and imaging array system.
Description
Technical field
The present invention relates to technical field of integrated circuits, more particularly to a kind of frequency for high-resolution radar array system
Rate source wireless synchronization and calibration method.
Background technique
In the fields such as radar and imaging applications, in order to increase the precision of radar range, promotion radar and imaging and divide
Resolution can form array by the number of Transmit-Receive Unit in increase system and obtain.When systems array is larger, due to core
The limitation such as piece processing dimension and packaging pin needs multiple array module cascades to realize.Radar and imaging for Coherence Mode
System, the cascade of multiple array modules will face the asynchronous problem of each Transmit-Receive Unit frequency source in system.For only having a frequency
The array system in rate source, in addition to frequency source signal intensity is greatly split by each Transmit-Receive Unit, frequency source signal divides on a large scale
The loss of cloth network and noise coupling also will seriously affect frequency source signal quality；For mulitple frequency source array system, each frequency
Source will lead to the asynchronous of source frequency and phase due to faint deviations such as technique, array module connection structures.These situations can
Cause the information that Transmit-Receive Unit obtains in whole system to go wrong, system performance is caused to decline.
Summary of the invention
In view of the technical drawbacks of the prior art, it is an object of the present invention to provide one kind to be used for high-resolution radar
The frequency source wireless synchronization and calibration method of array system are received by spontaneous emission in array system, realize the frequency of array system
Rate source is synchronous.
The technical solution adopted to achieve the purpose of the present invention is:
A kind of frequency source wireless synchronization and calibration method for high-resolution radar array system is extracted by multiple arrays
It, as reference frequency source and tranmitting frequency signal, is its in array system that module, which connects an array module in the array system to be formed,
Remaining array module receives reference frequency source signal through reflection and injects in the frequency source of array module itself, makes itself and reference frequency
Rate signal is synchronous.
Frequency source output in the array module is on the one hand defeated as the local oscillation signal in array module by gating
Out, it is on the other hand exported when executing simultaneously operating as synchronous reference signal；
The synchronous reference signal is emitted by transmitter chain, power amplifier and antenna in array module；This is same
It walks reference signal and receives and can be carried out by receiver link receiving antenna in array module and low-noise amplifier；
When executing simultaneously operating, synchronous reference signal is input to frequency source synchronous input end by gating, makes array
Module frequency source is synchronous with synchronous reference signal.
It is described it is synchronous with reference frequency signal can periodically be executed when array system is in running order, make entire battle array
Each array module frequency source of column system is in synchronous regime.
Compared with prior art, the beneficial effects of the present invention are:
It is of the invention be suitable for high-resolution radar and imaging applications array system frequency is received based on wireless spontaneous emission
Rate source synchronous method, can all units be simultaneously by itself transmitting unit tranmitting frequency signal in system, in array system
Signal is received, and array module frequency source corresponding with itself is connected, realize the synchronization of all frequency sources in array system, improved
The performance of coherent radar and imaging array system.
Detailed description of the invention
Fig. 1 show the schematic diagram of a display module；
Fig. 2 show the schematic diagram of the array system of multiple array module compositions；
Fig. 3 show the schematic diagram of the frequency source wireless synchronization mode of the array module of array system；
Fig. 4 show the frequency source wireless synchronization unit structure schematic diagram of the array module of array system.
Specific embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.It should be appreciated that described herein
Specific embodiment be only used to explain the present invention, be not intended to limit the present invention.
As shown in Figure 1, the present invention is used for the frequency source wireless synchronization and calibration method of high-resolution radar array system, it is
It extracts an array module 1 in array system 100 and is used as reference frequency source and tranmitting frequency signal, remaining array module in system
1 receives reference frequency source signal through reflection, and injects in the frequency source of array module itself, keeps it same with reference frequency signal
Step.
As Fig. 1-2 forms array system 100, can increase radar detection by the way that single array module 1 is formed face battle array
Distance, the precision and resolution ratio for promoting radar and imaging.In the process, the frequency source of each array module is in the shape that freely works
State, mutual frequency and phase are irrelevant, therefore cause entire array system to cannot get array module and cascade the performance boost having.
As shown in Figure 1, each array module 1 has multiple array module channels (Transmit-Receive Unit CH1-16) 3, and there is frequency
Rate source 2, as shown in Fig. 2, being the array system 100 that 5*5 array module 1 forms.
Frequency source wireless synchronization and calibration method proposed by the present invention for high-resolution radar array system, can make
Much frequency source is synchronous in the array system of array module cascade composition, as shown in Figure 3: extracting an array mould in array system
Block 1 is as reference frequency source and tranmitting frequency signal, and receive (can also be with by exterior object for remaining array module in system
For the catoptric arrangement of radar system installation) the reference frequency source signal that is reflected back, injects in the frequency source of array module itself, makes
Frequency source is synchronous with reference frequency signal.The synchronization can be controlled and be periodically carried out by system control signal, make entire battle array
The frequency source of column system is in synchronous regime.
In the present invention, the wireless synchronization framework of the frequency source 2 in the array module is as shown in figure 4, its transmitter chain
It can be with Transmit-Receive Unit fractional reuse original in array module with receiver link.
Wherein, the frequency source output in the array module is on the one hand defeated as the local oscillation signal in module by gating
Out, it is on the other hand exported when executing simultaneously operating as synchronous reference signal, the signal is by emitting link power in module
Amplifier and antenna are emitted；Synchronous reference signal reception can pass through receives link receiving antenna and low noise amplification in module
Device carries out, and synchronous reference signal is input to frequency source synchronous input end by gating when executing simultaneously operating, makes module frequency
Rate source is synchronous with synchronous reference signal.
Specifically, as shown in figure 4, being elected to be the array module frequency source 2 of reference when the circuit of frequency source wireless synchronization is realized
Output is connected by selector 5 with transmitter chain selector 5, the input of power amplifier 4 in array, and passes through antenna 6 to sky
Between middle transmitting reference frequency signal.Reference frequency signal after reflection, covers each array module in whole system, and each module is logical
The antenna 6 for crossing receiver link inputs the synchronous of the reference frequency signal injected frequency source 2 received with low-noise amplifier 3
Port keeps the frequency source of array module synchronous with reference frequency source.
The present invention synchronization can periodically be executed when array system is in running order, make each battle array of whole system
Column module frequency source is in synchronous regime.
The present invention uses frequency source wireless synchronization method, has several advantages that
First, the Transmit-Receive Unit reusable in array system, transmitting and reception when as frequency source wireless synchronization avoid
Increase additional circuit structure for system.
Second, wireless synchronization mode can avoid system in due to frequency source signal distributions bring complexity cabling network, with
And the problems such as consequent signal power loss.
Third, using frequency source wireless synchronization, the performance influence synchronous on frequency source of the scale of array system will become ten
Divide faint.
The above is only a preferred embodiment of the present invention, it is noted that for the common skill of the art
For art personnel, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (3)
1. being used for the frequency source wireless synchronization and calibration method of high-resolution radar array system, which is characterized in that extract by more
It, as reference frequency source and tranmitting frequency signal, is array that a array module, which connects an array module in the array system to be formed,
Remaining array module receives reference frequency source signal through reflection and injects in the frequency source of array module itself in system, make its with
Reference frequency signal is synchronous.
2. it is used for the frequency source wireless synchronization and calibration method of high-resolution radar array system as described in claim 1, it is special
Sign is on the one hand the frequency source output in the array module is exported by gating as the local oscillation signal in array module,
On the other hand it is exported when executing simultaneously operating as synchronous reference signal；
The synchronous reference signal is emitted by transmitter chain, power amplifier and antenna in array module；Synchronization ginseng
It examines signal and receives and can be carried out by receiver link receiving antenna in array module and low-noise amplifier；
When executing simultaneously operating, synchronous reference signal is input to frequency source synchronous input end by gating, makes array module
Frequency source is synchronous with synchronous reference signal.
3. it is used for the frequency source wireless synchronization and calibration method of high-resolution radar array system as described in claim 1, it is special
Sign is, it is described it is synchronous with reference frequency signal can periodically be executed when array system is in running order, make entire battle array
Each array module frequency source of column system is in synchronous regime.
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| CN201910304335.5A CN110113046B (en) | 2019-04-16 | 2019-04-16 | Frequency source wireless synchronization and calibration method for high-resolution radar array system |
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| CN201910304335.5A CN110113046B (en) | 2019-04-16 | 2019-04-16 | Frequency source wireless synchronization and calibration method for high-resolution radar array system |
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| CN110113046A true CN110113046A (en) | 2019-08-09 |
| CN110113046B CN110113046B (en) | 2022-04-05 |
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Cited By (2)
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| CN110940957A (en) * | 2019-10-28 | 2020-03-31 | 惠州市德赛西威汽车电子股份有限公司 | Modular millimeter wave radar |
| CN112558062A (en) * | 2019-09-25 | 2021-03-26 | 天津大学 | Multi-target vital sign radar detection system based on coding and phased array antenna |
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| CN110113046B (en) | 2022-04-05 |
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