CN106291527A - Radar installations based on fixing directional antenna broad beam angle measurement - Google Patents
Radar installations based on fixing directional antenna broad beam angle measurement Download PDFInfo
- Publication number
- CN106291527A CN106291527A CN201610594549.7A CN201610594549A CN106291527A CN 106291527 A CN106291527 A CN 106291527A CN 201610594549 A CN201610594549 A CN 201610594549A CN 106291527 A CN106291527 A CN 106291527A
- Authority
- CN
- China
- Prior art keywords
- signal
- target
- broad beam
- angle
- receiver
- 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.)
- Granted
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
- 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
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/06—Systems determining position data of a target
- G01S13/42—Simultaneous measurement of distance and other co-ordinates
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
A kind of radar installations based on fixing directional antenna broad beam angle measurement, comprise: there is the broad beam antenna of sum-difference network interface, the transmitter and receiver being connected with sum-difference network interface respectively, the microwave source being connected with transmitter, receiver respectively, the CFAR module being connected with receiver, the angle extraction module being connected with CFAR module, receiver respectively, the broad beam two dimension angular look-up table means being connected with angle extraction module；Microwave signal is radiate by broad beam antenna by transmitter, formed by sum-difference network interface after target reflection and road, orientation and Pitch signal carried out down coversion by receiver, transmitting to CFAR module with road signal of receiver output, obtains target range information according to intercepting and capturing criterion；Orientation and the Pitch signal of receiver output transmit to angle extraction module, according to target range information, table look-up and obtain target angle information.The present invention is lightweight, low in energy consumption, it is easy to Project Realization, it is adaptable to the platform of space weight resource-constrained.
Description
Technical field
The present invention relates to a kind of radar installations, specifically refer to a kind of broad beam using fixing directional antenna and realize angle measurement
Radar installations, is particularly suited for low cost, low-power consumption, compact conformation and has in the application platform of lightweight requirements.
Background technology
At present, monopulse radar uses bidimensional mechanical scanning mode to follow the tracks of target mostly, by the sensing of mechanism, completes to survey
The task at angle.Its shortcoming is: 1, the impact resistance of mechanical movable part, anti-shake performance are poor, and fit-up gap can affect angle measurement accuracy；
2, track-while-scan low-response, is not suitable for high-speed target scans for capture；3, mechanical scanning mechanism increases the installation sky of radar
Between and weight.
Additionally, minority monopulse radar uses two dimensional phased battle array scan mode to follow the tracks of target, its have beam position flexibly,
The advantages such as reliability height, mechanical moving component, but shortcoming is that T/R component count is many, development cost is high, power consumption is big, needs to adopt
Take cooling measure.
Chinese patent 201510103233.9 1 kinds missile-borne radar based on phased array antenna angle-measuring method, discloses one
Utilize phased array antenna simulation than width method and difference dualbeam angle-measuring method；The method development cost is high, power consumption is big, needs extra
Cooling unit, is not suitable for applying on the platform at low-power consumption, lightweight and compact conformation.Chinese patent 201010196685.3
A kind of method for measuring target azimuth by single-beam mechanical scanning radar, during mechanical scanning, target falls antenna master
During beam scope, the two-dimensional image echo strength on relative angle that target is different from antenna normal and two azimuths and difference
Ratio has fixing corresponding relation；The method needs mechanical scanning mechanism, and its impact resistance, anti-shake performance are poor, fit-up gap meeting
Affect angle measurement accuracy.Chinese patent 200580023741.0 monopulse radar apparatus and antenna change-over switch, utilize aerial array
Receiving echo-signal, calculate the angle of target according to the phase contrast receiving signal, the method needs multiple reception antennas and connects
The parts such as receipts machine, increase product weight and volume, are not suitable for miniaturization and lightweight.
Summary of the invention
It is an object of the invention to provide a kind of radar installations based on fixing directional antenna broad beam angle measurement, develop difficulty
Little, lightweight, low in energy consumption, it is easy to Project Realization, it is highly suitable on the platform of space weight resource-constrained using.
In order to achieve the above object, the present invention provides a kind of radar installations based on fixing directional antenna broad beam angle measurement,
Comprising: broad beam antenna, it has sum-difference network interface；Transmitter, it is connected with described sum-difference network interface；Receiver,
It is connected with described sum-difference network interface；Microwave source, it is connected with described transmitter and receiver respectively；CFAR mould
Block, it is connected with described receiver；Angle extraction module, it is connected with described CFAR module and receiver respectively；
Broad beam two dimension angular look-up table means, it is connected with described angle extraction module；
Wherein, microwave source generate microwave signal to be radiate by broad beam antenna by transmitter, via target reflection
After echo-signal received by broad beam antenna, formed respectively and road signal, bearing signal and pitching through sum-difference network interface
Signal, and be transmitted separately to receiver and carry out the down coversion with microwave signal；Exported by receiver and road signal transmits to permanent
False-alarm module, obtains target range information according to intercepting and capturing criterion, and transmits to angle extraction module；The orientation exported by receiver
Signal and Pitch signal transmit to angle extraction module, according to the target range information obtained, are calculated Pitch signal, orientation
Signal respectively with and the normalization numerical value of road signal, and obtain the angle of target by inquiry broad beam two dimension angular look-up table means
Degree information；In described broad beam two dimension angular look-up table means, storage has look-up table, and this look-up table is for according to pitching and side
Relatively and the normalized value of road signal, correspondence inquires target and deviates the angle information of center of antenna normal position signal.
The radar installations of the present invention also comprises: circulator, its respectively with described sum-difference network interface, transmitter and connect
Receipts machine connects；The microwave signal exported by transmitter need to be radiate by broad beam antenna after circulator amplifies；By with
Difference network interface is formed and road signal need to transmit to receiver through circulator.
Described receiver has and paths, azimuthal channel and pitch channel, and correspondence receives from circulator respectively
And road signal, and from the bearing signal of sum-difference network interface and Pitch signal.
The radar installations of the present invention also comprises: the first A/D converter, that it is connected to receiver and paths and CFAR
Between module, sample to obtain amplitude quantizing value to the baseband analog and road signal completing down coversion so that it is be converted into number
Zi He road signal；Second A/D converter, between its azimuthal channel being connected to receiver and angle extraction module, to completing down
The baseband analog bearing signal of frequency conversion carries out sampling to obtain amplitude quantizing value so that it is be converted into numeral bearing signal；3rd A/D
Transducer, between its pitch channel being connected to receiver and angle extraction module, to the baseband analog pitching completing down coversion
Signal carries out sampling to obtain amplitude quantizing value so that it is be converted into numeral Pitch signal.
Described circulator, transmitter and receiver integrated installation are on the backboard of broad beam antenna.
Described CFAR module obtains concretely comprising the following steps of target range information:
SA1, CFAR module receive numeral and the road signal of the first A/D converter output, and travel through it, find
Maximum in numeral and road signal；
SA2, to rejecting the numeral after maximum and the average of the squared sum of other data in the signal of road, obtain noise and put down
All power, and maximum square obtained target signal to noise ratio divided by noise average power；
SA3, the signal to noise ratio of calculated signal to noise ratio with intercepting and capturing criterion set in advance is compared, if calculated
The signal to noise ratio arrived, more than the signal to noise ratio of intercepting and capturing criterion, records and exports target location and with road amplitude to angle extraction module；
Otherwise, directly terminate, and wait until that the next repetition cycle restarts again.
Described angle extraction module obtains concretely comprising the following steps of target angle information:
SB1, angle extraction module receive the target location that exported by CFAR module and and road amplitude, and according to target
Position obtains the orientation amplitude of target respectively from the digital bearing signal of the second A/D converter output, and turns from the 3rd A/D
The digital Pitch signal of parallel operation output obtains the pitching amplitude of target；
SB2, calculate the quadratic sum of target pitch amplitude, and target and the quadratic sum of road amplitude respectively, and calculate both
Ratio F1；
SB3, according to ratio F1, from broad beam two dimension angular look-up table means, inquiry obtains the luffing angle of target；
SB4, calculate the quadratic sum of target bearing amplitude respectively, and target and the quadratic sum of road amplitude, and calculate both
Ratio F2；
SB5, according to ratio F2, from broad beam two dimension angular look-up table means, inquiry obtains the orientation angles of target.
In described broad beam two dimension angular look-up table means, the acquisition process of the look-up table of storage, specifically comprises following step
Rapid:
SC1, by the loudspeaker simulated target of gantry, use visual method that loudspeaker move to the broad beam of radar installations
The front of antenna, moves up and down loudspeaker, stops mobile when the pitching amplitude minimum that radar installations measurement obtains, and this position is wide
Beam antenna normal position in pitching；Stop mobile when the orientation amplitude minimum that radar installations measurement obtains, this position
It it is broad beam antenna normal position in orientation；
SC2, to set L as the angle of off-normal in target pitch, orientation, initial value be 1 degree；
Whether SC3, judgement L exceed the main beam width of broad beam antenna；If it was exceeded, complete pitching, orientation forward
The demarcation of direction look-up table, jumps to SC7, starts to obtain pitching, the demarcation of negative sense direction, orientation look-up table；Without super
Go out, then continue SC4, start to obtain pitching, the demarcation of orientation direction look-up table；
SC4, the loudspeaker of gantry are moved to L position, represent that the normal angle of target deviation antenna is L；
SC5, calculate pitching amplitude square and with and road amplitude square and ratio C 1, and orientation amplitude square and with and
The ratio C 2 of road amplitude square sum；
SC6, the value of C1 with C2 is saved in look-up table the position corresponding with L angle；L increases by 1 degree, returns SC3；
SC7, complete pitching, the demarcation of orientation direction look-up table, L is set for-1 degree, the loudspeaker of motion scan frame to L
Position；
Whether SC8, judgement L exceed the main beam width of broad beam antenna, if it was exceeded, complete pitching, orientation negative sense
The demarcation of direction look-up table, look-up table obtains and terminates；Without exceeding, then continue SC9, start pitching, negative sense direction, orientation
The demarcation of look-up table；
SC9, calculate pitching amplitude square and with and road amplitude square and ratio C 3, and orientation amplitude square and with and
The ratio C 4 of road amplitude square sum；
SC10, the value of C3 with C4 is saved in look-up table the position corresponding with L angle；L reduces 1 degree, returns SC8.
In sum, the radar installations based on fixing directional antenna broad beam angle measurement that the present invention provides, no longer by moving
Dynamic antenna beam is followed the tracks of target and is obtained the angle of target, effectively overcomes bidimensional mechanical scanning mode and phase-array scanning mode
Deficiency, this device development difficulty is little, lightweight, low in energy consumption, it is easy to Project Realization, is highly suitable for space weight resource-constrained
Use on platform.
Accompanying drawing explanation
Fig. 1 is the block diagram of the radar installations based on fixing directional antenna broad beam angle measurement in the present invention；
Fig. 2 is the flow chart that the CFAR module calculating in the present invention processes；
Fig. 3 is the flow chart that the angle extraction module calculating in the present invention processes；
Fig. 4 is the flow process of the look-up table acquisition process being stored in broad beam two dimension angular look-up table means in the present invention
Figure.
Detailed description of the invention
Below in conjunction with Fig. 1～Fig. 4, describe a preferred embodiment of the present invention in detail.
As it is shown in figure 1, be radar installations based on fixing directional antenna broad beam angle measurement provided by the present invention, comprise:
Broad beam antenna, it has sum-difference network interface 1；Transmitter 3, it is connected with described sum-difference network interface 1；Receiver 4, its
It is connected with described sum-difference network interface 1；Microwave source 9, it is connected with described transmitter 3 and receiver 4 respectively；CFAR
Module 5, it is connected with described receiver 4；Angle extraction module 6, its respectively with described CFAR module 5 and receiver
4 connect；Broad beam two dimension angular look-up table means 7, it is connected with described angle extraction module 6.
Wherein, microwave source 9 generate microwave signal to be given off by broad beam antenna by the transmitter 3 of potentiation distance
Go, received by broad beam antenna via the echo-signal after target reflection, formed respectively and road letter through sum-difference network interface 1
Number, bearing signal and Pitch signal, and be transmitted separately to receiver 4 and carry out the down coversion with microwave signal；Exported by receiver 4
And the transmission of road signal to CFAR module 5, obtain target range information according to intercepting and capturing criterion, and transmit to angle extraction module
6；The bearing signal exported by receiver 4 and Pitch signal transmission are to angle extraction module 6, according to the target range letter obtained
Breath, be calculated Pitch signal, bearing signal respectively with and the normalization numerical value of road signal, and by inquiry broad beam two-dimensional angular
Degree look-up table means 7 obtains the angle information of target；Described broad beam two dimension angular look-up table means 7 for according to pitching and
Relatively and the normalized value of road signal, correspondence inquires target and deviates the angle information of center of antenna normal bearing signal.
The radar installations of the present invention also comprises: circulator 2, its respectively with described sum-difference network interface 1, transmitter 3 with
And receiver 4 connects；The microwave signal exported by transmitter 3 need to be given off by broad beam antenna after circulator 2 amplifies
Go；Formed by sum-difference network interface 1 and road signal need to transmit to receiver 4 through circulator 2；Described circulator 2 is used for
The High-Power Microwave signal exported by transmitter 3 is isolated with highly sensitive receiver 4, plays the effect of transceiver insulation, and prevents
Only burn receiver 4.
Described receiver 4 has and paths, azimuthal channel and pitch channel, and correspondence receives from circulator respectively
2 and road signal, and from the bearing signal of sum-difference network interface 1 and Pitch signal, and carry out and microwave signal respectively
Down coversion, by multistage gain amplification, isolation and amplifier baseband signal, control signal gain simultaneously and low-pass filtering treatment, makes to connect
The output signal of receipts machine 4 has suitable level and bandwidth carries out subsequent treatment.
The radar installations of the present invention also comprises: an A/D (Analog to Digital, analog to digital) transducer 81,
It is connected to receiver 4 and between paths and CFAR module 5, the baseband analog and road signal completing down coversion is carried out
Sampling is to obtain amplitude quantizing value so that it is is converted into and is available for DSP (Digital Signal Processor, Digital Signal Processing
Device) or the numeral that processes of FPGA (Field Programmable Gate Array, field programmable gate array) and road letter
Number；Second A/D converter 82, between its azimuthal channel being connected to receiver 4 and angle extraction module 6, to completing down coversion
Baseband analog bearing signal carry out sampling to obtain amplitude quantizing value so that it is be converted into be available for DSP or FPGA process number
Word bearing signal；3rd A/D converter 83, between its pitch channel being connected to receiver 4 and angle extraction module 6, to complete
The baseband analog Pitch signal becoming down coversion carries out sampling to obtain amplitude quantizing value so that it is is converted into and is available for DSP or FPGA
The digital Pitch signal processed.
In order to optimize the design structure of whole radar installations, described circulator 2, transmitter 3 and receiver 4 carry out integration
Design, equal integrated installation is on the backboard of broad beam antenna.
Described CFAR module 5 receives numeral and road signal and it is carried out data traversal, rejects maximum and calculates
Obtain signal to noise ratio, find out and meet the target location intercepting and capturing criterion, and export target location and target and road amplitude to angle extraction
Module 6.As in figure 2 it is shown, it specifically comprises following calculating processes step:
SA1, CFAR module 5 receive and store numeral and the road signal of the first A/D converter 81 output, wherein store list
Block RAM (Random Access Memory, random access memory within the data space of unit selection DSP or FPGA
Device)；Numeral and road signal are traveled through, the data in each write storage unit are compared with maximum, if should
Data are more than maximum, then update maximum with gas, the most directly carry out the comparison of next write data, thus find numeral
With the maximum in the signal of road；
Other data after SA2, rejecting maximum represent the noise level of reception, and the data after rejecting maximum are asked flat
The average of side's sum, obtains noise average power, and by the signal to noise ratio square obtaining target divided by noise average power of maximum；
SA3, the signal to noise ratio of calculated signal to noise ratio with intercepting and capturing criterion set in advance is compared, if calculated
The signal to noise ratio arrived is more than intercepting and capturing the signal to noise ratio of criterion, then explanation radar measured data is effective, record and export target location and
With road amplitude to angle extraction module 6；Otherwise, directly terminate, and wait until that the next repetition cycle restarts again.
Described angle extraction module 6 receive target location and and road amplitude, and according to target location respectively from second
The digital bearing signal of A/D converter 82 output obtains the orientation amplitude of target, and from the 3rd A/D converter 83 output
Obtaining the pitching amplitude of target in numeral Pitch signal, after normalized, its result and target are in pitching and orientation side
The size being upwardly deviated from center of antenna normal has relation, obtains the angle information of target deviation center of antenna normal through tabling look-up.
As it is shown on figure 3, it specifically comprises following calculating processes step:
SB1, angle extraction module 6 receive the target location exported by CFAR module 5 and and road amplitude, and according to mesh
Cursor position obtains the orientation amplitude of target respectively from the digital bearing signal of the second A/D converter 82 output, and from the 3rd
The digital Pitch signal of A/D converter 83 output obtains the pitching amplitude of target；
SB2, calculate the quadratic sum of target pitch amplitude, and target and the quadratic sum of road amplitude respectively, and calculate both
The quadratic sum/target of ratio F1, i.e. F1=target pitch amplitude and the quadratic sum of road amplitude；
The luffing angle of SB3, ratio F1 and target has corresponding relation, set up by the data of both actual measurements have right
The look-up table that should be related to, is stored in broad beam two dimension angular look-up table means 7；Can be according to ratio F1, from broad beam two-dimensional angular
In degree look-up table means 7, inquiry obtains the luffing angle of target；
SB4, calculate the quadratic sum of target bearing amplitude respectively, and target and the quadratic sum of road amplitude, and calculate both
The quadratic sum/target of ratio F2, i.e. F2=target bearing amplitude and the quadratic sum of road amplitude；
The orientation angles of SB5, ratio F2 and target has corresponding relation, set up by the data of both actual measurements have right
The look-up table that should be related to, is stored in broad beam two dimension angular look-up table means 7；Can be according to ratio F2, from broad beam two-dimensional angular
In degree look-up table means 7, inquiry obtains the orientation angles of target.
As shown in Figure 4, be stored in the look-up table acquisition process in broad beam two dimension angular look-up table means, specifically comprise with
Lower step:
SC1, by the loudspeaker simulated target of gantry, initially with visual method, loudspeaker are moved to the width of radar installations
The front of beam antenna, moves up and down loudspeaker, stops mobile when the pitching amplitude minimum that radar installations measurement obtains, this position
It it is broad beam antenna normal position in pitching；Use same method, when the orientation amplitude that radar installations measurement obtains
Hour stopping mobile, this position is broad beam antenna normal position in orientation；
SC2, L represent the angle of off-normal in target pitch, orientation, and initial value is 1 degree；
Whether SC3, judgement L exceed the main beam width of broad beam antenna；If L is beyond the main beam width of broad beam antenna
Degree, then complete pitching, the demarcation of orientation direction look-up table, jump to SC7, starts to obtain pitching, negative sense direction, orientation is looked into
Look for the demarcation of table；If L is without departing from the main beam width of broad beam antenna, then continue SC4, start just obtaining pitching, orientation
Demarcation to direction look-up table；
SC4, the loudspeaker of gantry are moved to L position, represent that the normal angle of target deviation antenna is L；
SC5, calculate pitching amplitude square and with and road amplitude square and ratio C 1, and orientation amplitude square and with and
The ratio C 2 of road amplitude square sum；
SC6, the value of C1 with C2 is saved in look-up table the position corresponding with L angle；L increases by 1 degree, returns SC3；
SC7, complete pitching, the demarcation of orientation direction look-up table, L is set for-1 degree, the loudspeaker of motion scan frame to L
Position；
Whether SC8, judgement L exceed the main beam width of broad beam antenna, if L is beyond the main beam width of broad beam antenna
Degree, then complete pitching, the demarcation of negative sense direction, orientation look-up table, and look-up table obtains and terminates；If L is not beyond broad beam antenna
Main beam width, then continue SC9, starts pitching, the demarcation of negative sense direction, orientation look-up table；
SC9, calculate pitching amplitude square and with and road amplitude square and ratio C 3, and orientation amplitude square and with and
The ratio C 4 of road amplitude square sum；
SC10, the value of C3 with C4 is saved in look-up table the position corresponding with L angle；L reduces 1 degree, returns SC8.
Compared with prior art, the radar installations based on fixing directional antenna broad beam angle measurement that the present invention provides, have
Advantages below and beneficial effect: no longer follow the tracks of target by portable antenna wave beam and obtain the angle of target, effectively overcome bidimensional
Mechanical scanning mode and the deficiency of phase-array scanning mode, this device development difficulty is little, lightweight, low in energy consumption, it is easy to engineering is real
Existing, it is highly suitable on the platform of space weight resource-constrained using.
Although present disclosure has been made to be discussed in detail by above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read foregoing, for the present invention's
Multiple amendment and replacement all will be apparent from.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (8)
1. a radar installations based on fixing directional antenna broad beam angle measurement, it is characterised in that comprise:
Broad beam antenna, it has sum-difference network interface (1)；Transmitter (3), it is connected with described sum-difference network interface (1)；
Receiver (4), it is connected with described sum-difference network interface (1)；Microwave source (9), its respectively with described transmitter (3) and
Receiver (4) connects；CFAR module (5), it is connected with described receiver (4)；Angle extraction module (6), its respectively with
Described CFAR module (5) and receiver (4) connect；Broad beam two dimension angular look-up table means (7), itself and described angle
Degree extraction module (6) connects；
Wherein, microwave source (9) generate microwave signal and radiate by broad beam antenna by transmitter (3), anti-via target
Echo-signal after penetrating is received by broad beam antenna, through sum-difference network interface (1) formed respectively and road signal, bearing signal and
Pitch signal, and be transmitted separately to receiver (4) and carry out the down coversion with microwave signal；
Exported by receiver (4) and road signal transmits to CFAR module (5), obtains target range letter according to intercepting and capturing criterion
Breath, and transmit to angle extraction module (6)；
The bearing signal exported by receiver (4) and Pitch signal transmission to angle extraction module (6), according to the target obtained away from
From information, be calculated Pitch signal, bearing signal respectively with and the normalization numerical value of road signal, and by inquiry broad beam two
Dimension angle look-up table means (7) obtains the angle information of target；
In described broad beam two dimension angular look-up table means (7), storage has look-up table, and this look-up table is for according to pitching and side
Relatively and the normalized value of road signal, correspondence inquires target and deviates the angle information of center of antenna normal position signal.
2. radar installations based on fixing directional antenna broad beam angle measurement as claimed in claim 1, it is characterised in that also wrap
Containing: circulator (2), it is connected with described sum-difference network interface (1), transmitter (3) and receiver (4) respectively；By sending out
Penetrate the microwave signal that machine (3) exports to be radiate by broad beam antenna after circulator (2) amplifies；By sum-difference network interface
(1) formed and road signal need to be through circulator (2) transmission to receiver (4).
3. radar installations based on fixing directional antenna broad beam angle measurement as claimed in claim 2, it is characterised in that described
Receiver (4) has and paths, azimuthal channel and pitch channel, and correspondence receives believing with road from circulator (2) respectively
Number, and from the bearing signal of sum-difference network interface (1) and Pitch signal.
4. radar installations based on fixing directional antenna broad beam angle measurement as claimed in claim 3, it is characterised in that also wrap
Contain:
First A/D converter (81), its be connected to receiver (4) and between paths and CFAR module (5), to completing down
The baseband analog of frequency conversion and road signal carry out sampling to obtain amplitude quantizing value so that it is be converted into numeral and road signal；
Second A/D converter (82), between its azimuthal channel being connected to receiver (4) and angle extraction module (6), to completing
The baseband analog bearing signal of down coversion carries out sampling to obtain amplitude quantizing value so that it is be converted into numeral bearing signal；
3rd A/D converter (83), between its pitch channel being connected to receiver (4) and angle extraction module (6), to completing
The baseband analog Pitch signal of down coversion carries out sampling to obtain amplitude quantizing value so that it is be converted into numeral Pitch signal.
5. radar installations based on fixing directional antenna broad beam angle measurement as claimed in claim 2, it is characterised in that described ring
Shape device (2), transmitter (3) and receiver (4) integrated installation are on the backboard of broad beam antenna.
6. radar installations based on fixing directional antenna broad beam angle measurement as claimed in claim 4, it is characterised in that described
CFAR module (5) obtains concretely comprising the following steps of target range information:
SA1, CFAR module (5) receive numeral and the road signal that the first A/D converter (81) exports, and travel through it,
Find the maximum in numeral and road signal；
SA2, to rejecting the numeral after maximum and the average of the squared sum of other data in the signal of road, obtain the average merit of noise
Rate, and maximum square obtained target signal to noise ratio divided by noise average power；
SA3, the signal to noise ratio of calculated signal to noise ratio with intercepting and capturing criterion set in advance is compared, if calculated
Signal to noise ratio more than intercepting and capturing the signal to noise ratio of criterion, record and export target location and and road amplitude to angle extraction module (6)；No
Then, directly terminate, and wait until that the next repetition cycle restarts again.
7. radar installations based on fixing directional antenna broad beam angle measurement as claimed in claim 6, it is characterised in that described
Angle extraction module (6) obtains concretely comprising the following steps of target angle information:
SB1, angle extraction module (6) receive the target location that exported by CFAR module (5) and and road amplitude, and according to mesh
Cursor position obtains the orientation amplitude of target respectively from the digital bearing signal that the second A/D converter (82) exports, and from
The digital Pitch signal that three A/D converters (83) export obtains the pitching amplitude of target；
SB2, calculate the quadratic sum of target pitch amplitude, and target and the quadratic sum of road amplitude respectively, and calculate both ratios
Value F1；
SB3, according to ratio F1, from broad beam two dimension angular look-up table means (7), inquiry obtains the luffing angle of target；
SB4, calculate the quadratic sum of target bearing amplitude respectively, and target and the quadratic sum of road amplitude, and calculate both ratios
Value F2；
SB5, according to ratio F2, from broad beam two dimension angular look-up table means (7), inquiry obtains the orientation angles of target.
8. radar installations based on fixing directional antenna broad beam angle measurement as claimed in claim 7, it is characterised in that described
In broad beam two dimension angular look-up table means (7), the acquisition process of the look-up table of storage, specifically comprises the steps of
SC1, by the loudspeaker simulated target of gantry, use visual method that loudspeaker move to the broad beam antenna of radar installations
Front, move up and down loudspeaker, stop when the pitching amplitude minimum that radar installations measurement obtains mobile, this position is broad beam
Antenna normal position in pitching；Stop mobile when the orientation amplitude minimum that radar installations measurement obtains, this position is wide
Beam antenna normal position in orientation；
SC2, to set L as the angle of off-normal in target pitch, orientation, initial value be 1 degree；
Whether SC3, judgement L exceed the main beam width of broad beam antenna；If it was exceeded, complete pitching, orientation direction
The demarcation of look-up table, jumps to SC7, starts to obtain pitching, the demarcation of negative sense direction, orientation look-up table；Without exceeding, then
Continue SC4, start to obtain pitching, the demarcation of orientation direction look-up table；
SC4, the loudspeaker of gantry are moved to L position, represent that the normal angle of target deviation antenna is L；
SC5, calculate pitching amplitude square and with and road amplitude square and ratio C 1, and orientation amplitude square and with and road width
The ratio C 2 of degree quadratic sum；
SC6, the value of C1 with C2 is saved in look-up table the position corresponding with L angle；L increases by 1 degree, returns SC3；
SC7, completing pitching, the demarcation of orientation direction look-up table, arrange L for-1 degree, the loudspeaker of motion scan frame are to L position
Put；
Whether SC8, judgement L exceed the main beam width of broad beam antenna, if it was exceeded, complete pitching, negative sense direction, orientation
The demarcation of look-up table, look-up table obtains and terminates；Without exceeding, then continue SC9, start pitching, the lookup of negative sense direction, orientation
The demarcation of table；
SC9, calculate pitching amplitude square and with and road amplitude square and ratio C 3, and orientation amplitude square and with and road width
The ratio C 4 of degree quadratic sum；
SC10, the value of C3 with C4 is saved in look-up table the position corresponding with L angle；L reduces 1 degree, returns SC8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610594549.7A CN106291527B (en) | 2016-07-26 | 2016-07-26 | Radar installations based on fixed directional antenna broad beam angle measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610594549.7A CN106291527B (en) | 2016-07-26 | 2016-07-26 | Radar installations based on fixed directional antenna broad beam angle measurement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106291527A true CN106291527A (en) | 2017-01-04 |
| CN106291527B CN106291527B (en) | 2019-01-08 |
Family
ID=57652821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610594549.7A Active CN106291527B (en) | 2016-07-26 | 2016-07-26 | Radar installations based on fixed directional antenna broad beam angle measurement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106291527B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108663052A (en) * | 2018-04-28 | 2018-10-16 | 北京空间飞行器总体设计部 | Autonomous space non-cooperative target Relative Navigation camera is directed toward control method on a kind of star |
| CN113759376A (en) * | 2021-09-22 | 2021-12-07 | 上海无线电设备研究所 | Autonomous detection imaging integrated radar device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040130480A1 (en) * | 2001-05-11 | 2004-07-08 | Hans Hellsten | System for determining position and velocity of targets from signals scattered by the targets |
| CN102323579A (en) * | 2011-08-12 | 2012-01-18 | 西安天伟电子系统工程有限公司 | Height measurement method for continuous wave search radar |
| CN103389493A (en) * | 2013-06-25 | 2013-11-13 | 西安电子科技大学 | Multi-beam single-pulse angle measuring method based on beam selection method |
| CN103885039A (en) * | 2014-04-10 | 2014-06-25 | 四川九洲电器集团有限责任公司 | Channel multiplexing pitching angle measuring system based on panoramic search radar |
-
2016
- 2016-07-26 CN CN201610594549.7A patent/CN106291527B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040130480A1 (en) * | 2001-05-11 | 2004-07-08 | Hans Hellsten | System for determining position and velocity of targets from signals scattered by the targets |
| CN102323579A (en) * | 2011-08-12 | 2012-01-18 | 西安天伟电子系统工程有限公司 | Height measurement method for continuous wave search radar |
| CN103389493A (en) * | 2013-06-25 | 2013-11-13 | 西安电子科技大学 | Multi-beam single-pulse angle measuring method based on beam selection method |
| CN103885039A (en) * | 2014-04-10 | 2014-06-25 | 四川九洲电器集团有限责任公司 | Channel multiplexing pitching angle measuring system based on panoramic search radar |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108663052A (en) * | 2018-04-28 | 2018-10-16 | 北京空间飞行器总体设计部 | Autonomous space non-cooperative target Relative Navigation camera is directed toward control method on a kind of star |
| CN108663052B (en) * | 2018-04-28 | 2019-07-12 | 北京空间飞行器总体设计部 | Autonomous space non-cooperative target Relative Navigation camera is directed toward control method on a kind of star |
| CN113759376A (en) * | 2021-09-22 | 2021-12-07 | 上海无线电设备研究所 | Autonomous detection imaging integrated radar device |
| CN113759376B (en) * | 2021-09-22 | 2023-09-19 | 上海无线电设备研究所 | Autonomous detection imaging integrated radar device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106291527B (en) | 2019-01-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Srivastav et al. | A highly digital multiantenna ground-penetrating radar (GPR) system | |
| CN105699494B (en) | Millimeter wave hologram three-dimensional image-forming detecting system and method | |
| KR102167097B1 (en) | Radar Apparatus and Antenna Apparatus therefor | |
| CN103064080B (en) | Target guiding radar with continuous waves | |
| CN109581352B (en) | Super-resolution angle measurement system based on millimeter wave radar | |
| CN110988862B (en) | Ultra-close millimeter wave radar sensing method and system | |
| CN103558594A (en) | Phased array beamforming method based on airborne equipment | |
| CN104133209B (en) | The Integrative Radar system and method for target search and meteorological detection | |
| RU2522982C2 (en) | All-around looking radar | |
| CN102680966A (en) | Navigation radar for FMCW (frequency-modulated continuous wave) ship | |
| US11614532B2 (en) | Multistatic radar utilizing 5G | |
| CN104597440A (en) | Intelligent radar based on target motion matching | |
| JPH03100484A (en) | Two and half-dimensional radar system | |
| CN105606630B (en) | Tub nondestructive detection system and method | |
| CN111090094B (en) | Method and system for measuring dual-beam angle of pulse Doppler radar and storage medium | |
| CN104777467A (en) | Target detection method based on frequency scan antenna | |
| CN106291527B (en) | Radar installations based on fixed directional antenna broad beam angle measurement | |
| CN203084190U (en) | Continuous-wave target guiding radar | |
| CN113419239A (en) | Reconfigurable foundation MIMO slope monitoring radar system and monitoring method | |
| CN113805169A (en) | Space target low-power-consumption small satellite radar searching and tracking method | |
| CN109116387A (en) | Navigational satellite reflected signal intermediate frequency Enhancement Method | |
| CN113960523A (en) | Universal ultra-wideband correction direction-finding method and system based on FPGA | |
| CN108427111B (en) | Radar ranging method and device | |
| CN210465676U (en) | Millimeter wave wide-angle beam scanning radar sensor | |
| CN115308707B (en) | Low-frequency expansion measuring device and method for indoor RCS test field |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |