CN105548977A - Digital-array secondary radar digital T/R module state detection method and device - Google Patents
Digital-array secondary radar digital T/R module state detection method and device Download PDFInfo
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- CN105548977A CN105548977A CN201510925306.2A CN201510925306A CN105548977A CN 105548977 A CN105548977 A CN 105548977A CN 201510925306 A CN201510925306 A CN 201510925306A CN 105548977 A CN105548977 A CN 105548977A
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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
- 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
- G01S7/4004—Means for monitoring or calibrating of parts of a radar system
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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
- G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
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Abstract
The present invention relates to the field of secondary radars and especially relates to a digital-array secondary radar digital T/R module state detection method and device. For the problems in the prior art, the invention provides the digital-array secondary radar digital T/R module state detection method and the device, the key part of a digital T/R module collects valid information, and the health status of the digital T/R module is comprehensively tested. In the detection of a communication detection module, when the power-up of the digital T/R module is completed and the module does not enter into a normal service mode, the digital T/R module sends a fixed prefix and an increment number. A processor detects whether the fixed prefix and the increment number have errors and counts the number of the errors, the existence of a communication problem is judged if the number of the errors is larger than an error threshold, and a step (2) is executed if the number of the errors is smaller than or equal to the error threshold, otherwise the communication follow-up detection of the digital T/R module is realized with the cooperation of an RF communication channel detection module and an antenna detection module.
Description
Technical field
The present invention relates to secondary radar field, especially a kind of digital array secondary radar numeral T/R component states detection method and device.
Background technology
Digital array secondary radar system adopts distributed digital T/R component design, multichannel antenna a period of time receives and dispatches, because digital T/R assembly comprises many active radio frequency passages, As time goes on, the state of antenna element, radio-frequency channel may change, the reliability of fiber optic data communication and accuracy also need to be guaranteed, the present invention is from the angle of system, collect the effective information of the key position of digital T/R assembly by all kinds of means, comprehensive covering is reached to the detection of the health status of digital T/R assembly.
Summary of the invention
Technical matters to be solved by this invention is: for prior art Problems existing, a kind of digital array secondary radar numeral T/R component states detection method and device are provided, the key position of numeral T/R assembly, collects effective information, realizes complete detection to the health status of digital T/R assembly.
The technical solution used in the present invention is as follows:
A kind of digital array secondary radar numeral T/R component states detection method comprises:
Step 1: when digital T/R assembly has powered on but do not entered normal traffic pattern, digital T/R assembly sends fixing prefix and incremental number; Processor detect fixing prefix and incremental number whether wrong and statistics is made mistakes number, if number of makeing mistakes is greater than threshold value of makeing mistakes, then judge that communication has problems; When makeing mistakes, number is less than or equal to threshold value of makeing mistakes, then perform step 2;
Step 2: digital T/R assembly is when normal traffic pattern, numeral T/R assembly sends the answer signal of signal noise or secondary radar to processor, when supposing that the answer signal amplitude statistics average of signal noise amplitude and secondary radar is between the first statistical threshold and the second statistical threshold, statistics L numeral in second T/R assembly sends the answer signal of secondary radar to processor data amount; Judge the relation of the first statistical threshold, the second statistical threshold and data volume, judge whether optical-fibre communications has problems, if existing problems, then represent communication existing problems; Otherwise, perform step 3;
Step 3: processor sends transmitting data D1-D5 to digital T/R assembly by optical fiber, the emissive power of the amplitude-controllable system numeral T/R assembly of this transmitting data; Numeral T/R assembly by transmitting chain by the emissive power corresponding with transmitting data, then received by receiver and resolve this coupled signal, then processor judges digital T/R assembly radio-frequency passage whether normal communication by coupled signal range value J1-J5, if digital T/R assembly can not normal communication, then representative digit T/R assembly communication existing problems; Otherwise, perform step 4; Wherein the emissive power corresponding relation of emissive power D1-D5 and digital T/R assembly is: emissive power D1-D5 is respectively for 47dbm, 44dbm, 41dbm, 38dbm, 35dbm, then J1-J5 respectively should at following scope 4000-3000,2000-1500,1000-750,500-375,250-187.5;
Step 4: suppose that digital array secondary radar antenna element number is N, 2K the antenna element that processor controls to be connected with digital T/R assembly transmits, and controls 2K-1 and 2K+1 antenna element Received signal strength being connected with digital T/R assembly simultaneously; Numeral T/R assembly passes to processor by after the signal resolution received by optical fiber, obtains the reception amplitude between odd number a period of time and phase relation; Reception amplitude between odd number antenna element and phase place are collected rear and are normalized by processor; In like manner, 2K-1 the antenna element that processor controls to be connected with digital T/R assembly transmits, control 2K-2 and 2K antenna element Received signal strength being connected with digital T/R assembly simultaneously, numeral T/R assembly passes to processor by after the signal resolution received by optical fiber, obtains the reception amplitude between even number a period of time and phase relation; Reception amplitude between even number antenna element and phase place are collected rear and are normalized by processor; Then processor controls the 3rd antenna element and transmits, simultaneous processor controls first antenna element, second antenna element Received signal strength, because the amplitude of odd number, even number antenna element and phase place are determined, with respective first antenna element of odd number, even number antenna element for benchmark, determine amplitude and the phase relation of amplitude between odd and even number antenna and phase place and all antenna element; Wherein 0<K<N/2;
Step 5: repeat step 4, processor obtains two groups of transmission power levels and the phase value of each antenna element, judges transmission power level and phase value and the relation of corresponding setting value, judges that whether antenna element is normal.
Further, described step 2 specifically comprises:
Step 21: digital T/R assembly is when normal traffic pattern, numeral T/R assembly sends the answer signal of signal noise or secondary radar to processor, when supposing signal noise amplitude and answer signal amplitude average statistical between the first statistical threshold and the second statistical threshold, statistics L numeral in second T/R assembly sends to processor data amount; Wherein the first statistical threshold is less than the second statistical threshold;
Step 22: data volume is less than the first statistical threshold or quantity is greater than the second statistical threshold, then judge that digital T/R assembly optical-fibre communications has problems; When the first statistical threshold < data volume < second statistical threshold, then carry out step 3.
Further, described step 3 specifically comprises:
Step 31: processor sends transmitting data D1-D5 to digital T/R assembly by optical fiber, the emissive power of the amplitude-controllable system numeral T/R assembly of this transmitting data; Emissive power corresponding for transmitting data is launched by transmitting chain by numeral T/R assembly, coupling mechanism passes to after emissive power being coupled and accepts link, described receiver receives coupled signal, and to resolve this coupled signal range value be J1-J5, coupled signal range value J1-J5 is passed to processor by digital T/R assembly;
Step 32: coupled signal range value J1-J5 and coupled signal range value theoretical value T1-T5 compares by processor respectively; When any one value in coupled signal range value J1-J5 exceed corresponding coupled signal range value theoretical value T1-T5 ± amplitude range of 20%, then think that radio-frequency channel has problems; When neither one in coupled signal range value J1-J5 exceed corresponding coupled signal range value theoretical value T1-T5 ± amplitude range of 20%, and (J1/T1+J2/T2+J3/T3+J4/T4+J5/T5)/5 are greater than 1.1 or be less than 0.9, then think that radio-frequency channel has problems; In addition, digital T/R assembly radio-frequency passage is judged to be normally, performs step 4.
Further, be normalized detailed process and be after the reception amplitude between odd number antenna element and phase place are collected by processor in described step 4: when supposing that the second antenna element is launched, the reception amplitude of the first antenna element and phase place are respectively P
2 1and H
2 1, wherein the subscript of acceptance latitude and phase place represents transmitting a period of time position, and subscript represents reception a period of time position; The reception amplitude in third antenna a period of time and phase place are respectively P
2 3and H
2 3, so set the reception amplitude of first antenna element and phase place is respectively 1 and 0, then the reception amplitude in third antenna a period of time and phase place are respectively P
2 3/ P
2 1and H
2 3-H
2 1; The like, then the reception amplitude of 2K-1 and phase relation are expressed and are specially (P
2 3/ P
2 1) * (P
4 5/ P
4 3) * ... * (P
2K-2 2K-1/ P
2K-2 2K-3) and (H
2 3-H
2 1)+(H
4 5-H
4 3)+... + (H
2K-2 2K-1-H
2K-2 2K-3);
In described step 4, the reception amplitude between even number antenna element and phase place are collected afterwards and are normalized detailed process and be by processor: when supposing that third antenna a period of time launches, the reception amplitude of the second antenna element and phase place are respectively P
3 2and H
3 2(represent with subscript and launch a period of time position, subscript represents reception a period of time position), reception amplitude and the phase place of the 4th antenna element are respectively P
3 4and H
3 4, so set the reception amplitude of first antenna element and phase place is respectively 1 and 0, then the reception amplitude in third antenna a period of time and phase place are respectively P
3 4/ P
3 2and H
3 4-H
3 2; The like, then the reception amplitude of 2K and phase relation are expressed and are specially (P
3 4/ P
3 2) * (P
5 6/ P
5 4) * ... * (P
2K-1 2K/ P
2K-1 2K-2) and (H
3 4-H
3 2)+(H
5 6-H
5 4)+... + (H
2K-1 2K-H
2K-1 2K- 2);
In described step 4, processor controls first antenna element, second antenna element Received signal strength, because the amplitude of odd number, even number antenna element and phase place are determined, with respective first antenna element of odd number, even number antenna element for benchmark, determine that amplitude and the phase relation specific implementation process of amplitude between odd and even number antenna and phase place and all antenna element are: suppose that the 3rd antenna element transmits, first antenna element receives amplitude and phase place is respectively P ＇
3 1with H ＇
3 1, second antenna element Received signal strength P ＇
3 2with H ＇
3 2, because first and second antenna element and the 3rd path phase that antenna element exists difference are H
x, amplitude difference is P
xif the amplitude of even number antenna element and phase invariant, then the amplitude in odd number a period of time and phase place become: P
x* (H ＇
3 2/ H ＇
3 1) * (P
2 3/ P
2 1) * (P
4 5/ P
4 3) * ... * (P
2K-2 2K-1/ P
2K-2 2K-3) and H
x+ (H ＇
3 2-H ＇
3 1)+(H
2 3-H
2 1)+(H
4 5-H
4 3)+... + (H
2K-2 2K-1-H
2K-2 2K-3).
Further, described step 5 is specially: repeat step 4, processor obtains two groups of transmission power levels and the phase value of each antenna element, by the transmission power level of each antenna element is compared with corresponding setting value, if the transmission power level of antenna element is less than corresponding setting value arbitrarily, then this antenna element existing problems; The phase differential of twice detection is compared with the corresponding phase differential set simultaneously, if the phase difference value that both sides are detected is less than the phase difference value of corresponding setting, then this antenna existing problems; Otherwise antenna element communication is normal.
A kind of digital array secondary radar numeral T/R component states pick-up unit comprises:
Numeral T/R assembly: during for having powered on but not entered normal traffic pattern, digital T/R assembly sends fixing prefix and incremental number;
Processor: for detecting fixing prefix and the whether wrong and statistics of incremental number is made mistakes number, if number of makeing mistakes is greater than threshold value of makeing mistakes, then judge that communication has problems; When makeing mistakes, number is less than or equal to threshold value of makeing mistakes, numeral T/R assembly sends the answer signal of signal noise or secondary radar to processor, when the answer signal amplitude statistics average of processor hypothesis signal noise amplitude and secondary radar is between the first statistical threshold and the second statistical threshold, statistics L numeral in second T/R assembly sends the answer signal of secondary radar to processor data amount; Judge the relation of the first statistical threshold, the second statistical threshold and data volume, judge whether optical-fibre communications has problems, if existing problems, then represent communication existing problems; Otherwise processor sends transmitting data D1-D5 to digital T/R assembly by optical fiber, the emissive power of the amplitude-controllable system numeral T/R assembly of this transmitting data; Numeral T/R assembly by transmitting chain by the emissive power corresponding with transmitting data, then received by receiver and resolve this coupled signal, then processor judges digital T/R assembly radio-frequency passage whether normal communication by coupled signal range value J1-J5, if digital T/R assembly can not normal communication, then representative digit T/R assembly communication existing problems; Otherwise suppose that digital array secondary radar antenna element number is N, 2K the antenna element that processor controls to be connected with digital T/R assembly transmits, control 2K-1 and 2K+1 antenna element Received signal strength being connected with digital T/R assembly simultaneously; Numeral T/R assembly passes to processor by after the signal resolution received by optical fiber, obtains the reception amplitude between odd number a period of time and phase relation; Reception amplitude between odd number antenna element and phase place are collected rear and are normalized by processor; In like manner, 2K-1 the antenna element that processor controls to be connected with digital T/R assembly transmits, control 2K-2 and 2K antenna element Received signal strength being connected with digital T/R assembly simultaneously, numeral T/R assembly passes to processor by after the signal resolution received by optical fiber, obtains the reception amplitude between even number a period of time and phase relation; Reception amplitude between even number antenna element and phase place are collected rear and are normalized by processor; Then processor controls the 3rd antenna element and transmits, simultaneous processor controls first antenna element, second antenna element Received signal strength, because the amplitude of odd number, even number antenna element and phase place are determined, with respective first antenna element of odd number, even number antenna element for benchmark, determine amplitude and the phase relation of amplitude between odd and even number antenna and phase place and all antenna element; Then processor obtains two groups of transmission power levels and the phase value of each antenna element, judges transmission power level and phase value and the relation of corresponding setting value, judges that whether antenna element is normal; Wherein the emissive power corresponding relation of emissive power D1-D5 and digital T/R assembly is: emissive power D1-D5 is respectively for 47dbm, 44dbm, 41dbm, 38dbm, 35dbm, then J1-J5 respectively should at following scope 4000-3000,2000-1500,1000-750,500-375,250-187.5.
Further, described digital T/R assembly is when normal traffic pattern, numeral T/R assembly sends the answer signal of signal noise or secondary radar to processor, when supposing that the answer signal amplitude statistics average of signal noise amplitude and secondary radar is between the first statistical threshold and the second statistical threshold, statistics L numeral in second T/R assembly sends the answer signal of secondary radar to processor data amount; Judge the relation of the first statistical threshold, the second statistical threshold and data volume, judge that the optical-fibre communications detailed process that whether has problems is:
Step 21: digital T/R assembly is when normal traffic pattern, numeral T/R assembly sends the answer signal of signal noise or secondary radar to processor, when supposing signal noise amplitude and answer signal amplitude average statistical between the first statistical threshold and the second statistical threshold, statistics L numeral in second T/R assembly sends to processor data amount; Wherein the first statistical threshold is less than the second statistical threshold;
Step 22: data volume is less than the first statistical threshold or quantity is greater than the second statistical threshold, then judge that digital T/R assembly optical-fibre communications has problems; Then when the first statistical threshold < data volume < second statistical threshold, the optical-fibre communications of digital T/R assembly is normal.
Further, described processor sends transmitting data D1-D5 to digital T/R assembly by optical fiber, the emissive power of the amplitude-controllable system numeral T/R assembly of this transmitting data; Numeral T/R assembly by transmitting chain by the emissive power corresponding with transmitting data, then received by receiver and resolve this coupled signal, then by coupled signal range value J1-J5, processor judges whether normal communication detailed process is digital T/R assembly radio-frequency passage:
Step 31: processor sends transmitting data D1-D5 to digital T/R assembly by optical fiber, the emissive power of the amplitude-controllable system numeral T/R assembly of this transmitting data; Emissive power corresponding for transmitting data is launched by transmitting chain by numeral T/R assembly, coupling mechanism passes to after emissive power being coupled and accepts link, described receiver receives coupled signal, and to resolve this coupled signal range value be J1-J5, coupled signal range value J1-J5 is passed to processor by digital T/R assembly;
Step 32: coupled signal range value J1-J5 and coupled signal range value theoretical value T1-T5 compares by processor respectively; When any one value in coupled signal range value J1-J5 exceed corresponding coupled signal range value theoretical value T1-T5 ± amplitude range of 20%, then think that radio-frequency channel has problems; When neither one in coupled signal range value J1-J5 exceed corresponding coupled signal range value theoretical value T1-T5 ± amplitude range of 20%, and (J1/T1+J2/T2+J3/T3+J4/T4+J5/T5)/5 are greater than 1.1 or be less than 0.9, then think that radio-frequency channel has problems; In addition, digital T/R assembly radio-frequency passage is judged to be normally.
Further, the reception amplitude between odd number antenna element and phase place are collected afterwards and are normalized detailed process and be by described processor: when supposing that the second antenna element is launched, the reception amplitude of the first antenna element and phase place are respectively P
2 1and H
2 1, wherein the subscript of acceptance latitude and phase place represents transmitting a period of time position, and subscript represents reception a period of time position; The reception amplitude in third antenna a period of time and phase place are respectively P
2 3and H
2 3, so set the reception amplitude of first antenna element and phase place is respectively 1 and 0, then the reception amplitude in third antenna a period of time and phase place are respectively P
2 3/ P
2 1and H
2 3-H
2 1; The like, then the reception amplitude of 2K-1 and phase relation are expressed and are specially (P
2 3/ P
2 1) * (P
4 5/ P
4 3) * ... * (P
2K-2 2K-1/ P
2K-2 2K-3) and (H
2 3-H
2 1)+(H
4 5-H
4 3)+... + (H
2K-2 2K-1-H
2K-2 2K-3);
Reception amplitude between even number antenna element and phase place are collected afterwards and are normalized detailed process by described processor: when supposing that third antenna a period of time launches, the reception amplitude of the second antenna element and phase place are respectively P
3 2and H
3 2(represent with subscript and launch a period of time position, subscript represents reception a period of time position), reception amplitude and the phase place of the 4th antenna element are respectively P
3 4and H
3 4, so set the reception amplitude of first antenna element and phase place is respectively 1 and 0, then the reception amplitude in third antenna a period of time and phase place are respectively P
3 4/ P
3 2and H
3 4-H
3 2; The like, then the reception amplitude of 2K and phase relation are expressed and are specially (P
3 4/ P
3 2) * (P
5 6/ P
5 4) * ... * (P
2K-1 2K/ P
2K-1 2K-2) and (H
3 4-H
3 2)+(H
5 6-H
5 4)+... + (H
2K-1 2K-H
2K-1 2K-2);
Described processor controls first antenna element, second antenna element Received signal strength, because the amplitude of odd number, even number antenna element and phase place are determined, with respective first antenna element of odd number, even number antenna element for benchmark, determine that amplitude and the phase relation specific implementation process of amplitude between odd and even number antenna and phase place and all antenna element are: suppose that the 3rd antenna element transmits, first antenna element receives amplitude and phase place is respectively P ＇
3 1with H ＇
3 1, second antenna element Received signal strength P ＇
3 2with H ＇
3 2, because first and second antenna element and the 3rd path phase that antenna element exists difference are H
x, amplitude difference is P
xif the amplitude of even number antenna element and phase invariant, then the amplitude in odd number a period of time and phase place become: P
x* (H ＇
3 2/ H ＇
3 1) * (P
2 3/ P
2 1) * (P
4 5/ P
4 3) * ... * (P
2K-2 2K-1/ P
2K-2 2K-3) and
H
X+(H＇
3 2-H＇
3 1)+(H
2 3-H
2 1)+(H
4 5-H
4 3)+…+(H
2K-2 2K-1-H
2K-2 2K-3)
Further, described processor obtains two groups of transmission power levels and the phase value of each antenna element, judge the relation of transmission power level and phase value and corresponding setting value, judge that the whether normal detailed process of antenna element is: processor obtains two groups of transmission power levels and the phase value of each antenna element, by the transmission power level of each antenna element is compared with corresponding setting value, if the transmission power level of antenna element is less than corresponding setting value arbitrarily, then this antenna element existing problems; The phase differential of twice detection is compared with the corresponding phase differential set simultaneously, if the phase difference value that both sides are detected is less than the phase difference value of corresponding setting, then this antenna existing problems; Otherwise antenna element communication is normal.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows:
The present invention's advantage is compared with prior art: as a kind of detection method of digital array secondary radar numeral T/R assembly health status, achieve digital T/R component operation critical link detect, fault detect overall scientific, has very important effect to the localization of fault of digital T/R assembly and rapid-maintenance.
Embodiment
All features disclosed in this instructions, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
Arbitrary feature disclosed in this instructions (comprising any accessory claim, summary), unless specifically stated otherwise, all can be replaced by other equivalences or the alternative features with similar object.That is, unless specifically stated otherwise, each feature is an example in a series of equivalence or similar characteristics.
This device comprises: optical fiber communication detection module, radio-frequency channel detection module, antenna detection module.
(1) optical fiber communication detection module, by having detected the detection of optical fiber communication health status to the break-make of optical fiber, the error rates of data etc. of Optical Fiber Transmission;
(2) radio-frequency channel detection module is by detecting digital array secondary radar numeral T/R assembly emissive power inside, completes the detection of radio-frequency channel health status;
(3) antenna detection module is by emissive power coupling between digital array secondary radar numeral T/R element antenna, completes the detection of digital array secondary radar numeral T/R element antenna health status.
The course of work is: (1) optical fiber communication detection module
This module is by having detected the detection of optical fiber communication health status to the light signal of Optical Fiber Transmission, the error rates of data etc. of Optical Fiber Transmission:
Exchange data by optical fiber communication between processor and digital T/R assembly, need a kind of method to carry out detection fiber communication and whether have problems.Detect point two steps, step is that digital T/R assembly is when having powered on but do not entered normal traffic pattern, numeral T/R assembly sends " fixing prefix BC0000BC+ incremental number " to processor, wherein incremental number is from 0, is incremented to the maximum number of 92 successively, the fixing prefix of processor monitoring and incremental number whether wrong and statistics is made mistakes number, if make mistakes, number is greater than setting value, then judge optical fiber communication existing problems, if number of makeing mistakes is less than or equal to setting value, detects and enter second step.Second step is that digital T/R assembly is when normal traffic pattern, now digital T/R assembly sends to the data of processor to be the answer signal of signal noise or secondary radar, signal noise accounting is less than certain value, major part is signal noise, signal noise amplitude equalizing value meets the statistical law of thermonoise, in conjunction with amplitude rule and the accounting of the answer signal of secondary radar, both amplitude statistics averages between A and B, wherein A<B.Accordingly, statistics L numeral in second T/R assembly sends to the data mean value of processor to be C, as C<A or C>B, all judge optical fiber communication existing problems, if A<C<B, then no problem, then detected by radio-frequency channel detection module.
(2) radio-frequency channel detection module
This module, by detecting the coupling of digital array secondary radar numeral T/R assembly emissive power, completes the detection of radio-frequency channel health status:
In order to detect digital T/R assembly radio-frequency passage health status, coupling mechanism is devised in digital T/R component internal, the thinking of this module is the emissive power by setting digital T/R assembly, emitted energy is coupled to coupling mechanism, and by receiver the coupled signal of coupling mechanism parsed and judge that whether digital T/R assembly radio-frequency passage healthy, because said process covers transmitting and receiving link, and set multi-stage launch power, detection science is feasible, and specific implementation step is as follows.
Processor sends transmitting data to digital T/R assembly by optical fiber, the emissive power of the amplitude-controllable system numeral T/R assembly of this transmitting data, in order to accurately detect the state of radio-frequency channel, it is 5 grades by transmission power setting, according to the corresponding relation of transmitting data and emissive power, transmitting data is set as D1-D5, after detection starts, numeral T/R assembly receives transmitting data D1, and by transmitting chain, signal is launched, coupled signal is passed to receiver with coupling mechanism and the amplitude that parses is J1, J1 is passed to processor by numeral T/R assembly, processor again control figure T/R assembly completes the detection of other grade emissive power, receive digital T/R assembly to pass the amplitude of coming and be respectively J1-J5.Processor stores the theoretical value of this amplitude, is assumed to be T1-T5, below in two kinds of situations, judges the radio-frequency channel existing problems of digital T/R assembly radio-frequency passage.The first be any one value in J1-J5 exceed corresponding T1-T5 up and down 20% amplitude range, supposing that J1 goes beyond the scope is J1>1.2T1, or J1<0.8T1, then think that radio-frequency channel has problems, the first be neither one in J1-J5 exceed corresponding T1-T5 up and down 20% amplitude range, when entirety beyond 10% amplitude range, namely (J1/T1+J2/T2+J3/T3+J4/T4+J5/T5)/5 are greater than 1.1 or be less than 0.9, also think that radio-frequency channel has problems.In addition, digital T/R assembly radio-frequency passage is judged to be normally.If digital T/R assembly radio-frequency passage is judged to normally, then to be detected by antenna detection module.
(3) antenna detection module
Antenna element is connected with digital T/R assembly by RF cable, and processor passes through antenna element receiving and transmitting signal by optical fiber control figure T/R assembly.
First suppose that digital array secondary radar antenna element number is N, start processor control figure T/R assembly to launch coupled antenna element 2, control figure T/R assembly receives coupled antenna element 1 and 3 simultaneously, in like manner, increase progressively successively, control the same power emission of antenna element 2K for even number, control figure T/R assembly receives coupled antenna element 2K-1 and 2K+1 simultaneously, wherein 0<K<N/2, processor is passed to by optical fiber after the signal resolution that digital T/R assembly is received, reception amplitude between all odd number antenna element and phase place are collected rear and are normalized as follows by processor: when supposing that antenna element 2 is launched, the reception amplitude of antenna element 1 and phase place are respectively P1 and H1, the reception amplitude of antenna element 3 and phase place are respectively P3 and H3, the reception amplitude and the phase place that so set antenna element 1 are respectively 1 and 0, then the reception amplitude of antenna element 3 and phase place are respectively P3/P1 and H3-H1, by this rule successively normalizing, then can obtain the reception amplitude between all odd number antenna element and phase relation.In like manner, antenna element 2K-1 launches, antenna element 2K-2 and 2K receives simultaneously, wherein 0<K<N/2, now obtain the reception amplitude between even number a period of time and phase relation, antenna element 1 is launched, antenna element 2,3 receives simultaneously, because the amplitude of odd number, even number antenna element and phase place are determined, take antenna element 2 and 3 respectively as the benchmark of even number and odd number antenna element, finally can determine amplitude and the phase relation of amplitude between odd and even number antenna and phase place and all antenna element.
In like manner, processor control figure T/R assembly is launched successively to coupled antenna element 2K-1 and 2K+1, antenna element 2K receives, and wherein 0<K<N/2, now obtains the transmitting amplitude between odd number antenna element and phase relation; Antenna element 2K-2 and 2K launches successively, antenna element 2K-1 receives, wherein 0<K<N/2, now obtain the transmitting amplitude between even number antenna element and phase relation, antenna element 2,3 is launched successively, antenna element 1 receives, and finally obtains the transmitting amplitude between all antenna element and phase relation.
Above-mentioned test process is repeated twice, see according to the test result of twice and each whether detect transmitting and receiving amplitude between antenna element lower than setting value, if existed, think that this antenna element has problems, the transmitting and receiving phase place of twice detection is contrasted simultaneously, see that whether the phase difference value of twice is higher than setting value, if existed, also think that this antenna element has problems.Because this kind of all antenna element of method of testing exists relevance, an antenna element has fault, follow-up antenna element can be caused to detect and also to have problem, therefore, orientate first amplitude and the in-problem antenna element of phase place as faulty channel, whether normally detect subsequent antenna a period of time after to be repaired more further.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature of disclosing in this manual or any combination newly, and the step of the arbitrary new method disclosed or process or any combination newly.
Claims (10)
1. a digital array secondary radar numeral T/R component states detection method, is characterized in that comprising:
Step 1: when digital T/R assembly has powered on but do not entered normal traffic pattern, digital T/R assembly sends fixing prefix and incremental number; Processor detect fixing prefix and incremental number whether wrong and statistics is made mistakes number, if number of makeing mistakes is greater than threshold value of makeing mistakes, then judge that communication has problems; When makeing mistakes, number is less than or equal to threshold value of makeing mistakes, then perform step 2;
Step 2: digital T/R assembly is when normal traffic pattern, numeral T/R assembly sends the answer signal of signal noise or secondary radar to processor, when supposing that the answer signal amplitude statistics average of signal noise amplitude and secondary radar is between the first statistical threshold and the second statistical threshold, statistics L numeral in second T/R assembly sends the answer signal of secondary radar to processor data amount; Judge the relation of the first statistical threshold, the second statistical threshold and data volume, judge whether optical-fibre communications has problems, if existing problems, then represent communication existing problems; Otherwise, perform step 3;
Step 3: processor sends transmitting data D1-D5 to digital T/R assembly by optical fiber, the emissive power of the amplitude-controllable system numeral T/R assembly of this transmitting data; Numeral T/R assembly by transmitting chain by the emissive power corresponding with transmitting data, then received by receiver and resolve this coupled signal, then processor judges digital T/R assembly radio-frequency passage whether normal communication by coupled signal range value J1-J5, if digital T/R assembly can not normal communication, then representative digit T/R assembly communication existing problems; Otherwise, perform step 4; The emissive power corresponding relation of wherein emissive power D1-D5 and digital T/R assembly is: emissive power D1-D5 is respectively for 47dbm, 44dbm, 41dbm, 38dbm, 35dbm, then J1-J5 respectively should in following scope 4000-3000,2000-1500,1000-750,500-375,250-187.5;
Step 4: suppose that digital array secondary radar antenna element number is N, 2K the antenna element that processor controls to be connected with digital T/R assembly transmits, and controls 2K-1 and 2K+1 antenna element Received signal strength being connected with digital T/R assembly simultaneously; Numeral T/R assembly passes to processor by after the signal resolution received by optical fiber, obtains the reception amplitude between odd number a period of time and phase relation; Reception amplitude between odd number antenna element and phase place are collected rear and are normalized by processor; In like manner, 2K-1 the antenna element that processor controls to be connected with digital T/R assembly transmits, control 2K-2 and 2K antenna element Received signal strength being connected with digital T/R assembly simultaneously, numeral T/R assembly passes to processor by after the signal resolution received by optical fiber, obtains the reception amplitude between even number a period of time and phase relation; Reception amplitude between even number antenna element and phase place are collected rear and are normalized by processor; Then processor controls the 3rd antenna element and transmits, simultaneous processor controls first antenna element, second antenna element Received signal strength, because the amplitude of odd number, even number antenna element and phase place are determined, with respective first antenna element of odd number, even number antenna element for benchmark, determine amplitude and the phase relation of amplitude between odd and even number antenna and phase place and all antenna element; Wherein 0<K<N/2;
Step 5: repeat step 4, processor obtains two groups of transmission power levels and the phase value of each antenna element, judges transmission power level and phase value and the relation of corresponding setting value, judges that whether antenna element is normal.
2. a kind of digital array secondary radar numeral T/R component states detection method according to claim 1, is characterized in that described step 2 specifically comprises:
Step 21: digital T/R assembly is when normal traffic pattern, numeral T/R assembly sends the answer signal of signal noise or secondary radar to processor, when supposing signal noise amplitude and answer signal amplitude average statistical between the first statistical threshold and the second statistical threshold, statistics L numeral in second T/R assembly sends to processor data amount; Wherein the first statistical threshold is less than the second statistical threshold;
Step 22: data volume is less than the first statistical threshold or quantity is greater than the second statistical threshold, then judge that digital T/R assembly optical-fibre communications has problems; When the first statistical threshold < data volume < second statistical threshold, then carry out step 3.
3. a kind of digital array secondary radar numeral T/R component states detection method according to claim 1, is characterized in that described step 3:
Step 31: processor sends transmitting data D1-D5 to digital T/R assembly by optical fiber, the emissive power of the amplitude-controllable system numeral T/R assembly of this transmitting data; Emissive power corresponding for transmitting data is launched by transmitting chain by numeral T/R assembly, coupling mechanism passes to after emissive power being coupled and accepts link, described receiver receives coupled signal, and to resolve this coupled signal range value be J1-J5, coupled signal range value J1-J5 is passed to processor by digital T/R assembly;
Step 32: coupled signal range value J1-J5 and coupled signal range value theoretical value T1-T5 compares by processor respectively; When any one value in coupled signal range value J1-J5 exceed corresponding coupled signal range value theoretical value T1-T5 ± amplitude range of 20%, then think that radio-frequency channel has problems; When neither one in coupled signal range value J1-J5 exceed corresponding coupled signal range value theoretical value T1-T5 ± amplitude range of 20%, and (J1/T1+J2/T2+J3/T3+J4/T4+J5/T5)/5 are greater than 1.1 or be less than 0.9, then think that radio-frequency channel has problems; In addition, digital T/R assembly radio-frequency passage is judged to be normally, performs step 4.
4. the digital a burst of secondary radar numeral T/R component states detection method of one according to claim 1, to it is characterized in that in described step 4 processor the reception amplitude between odd number antenna element and phase place are collected after and be normalized detailed process and be: when supposing that the second antenna element is launched, the reception amplitude of the first antenna element and phase place are respectively P
2 1and H
2 1, wherein the subscript of acceptance latitude and phase place represents transmitting a period of time position, and subscript represents reception a period of time position; The reception amplitude in third antenna a period of time and phase place are respectively P
2 3and H
2 3, so set the reception amplitude of first antenna element and phase place is respectively 1 and 0, then the reception amplitude in third antenna a period of time and phase place are respectively P
2 3/ P
2 1and H
2 3-H
2 1; The like, then the reception amplitude of 2K-1 and phase relation are expressed and are specially (P
2 3/ P
2 1) * (P
4 5/ P
4 3) * ... * (P
2K-2 2K-1/ P
2K-2 2K-3) and (H
2 3-H
2 1)+(H
4 5-H
4 3)+... + (H
2K-2 2K-1-H
2K-2 2K-3);
In described step 4, the reception amplitude between even number antenna element and phase place are collected afterwards and are normalized detailed process and be by processor: when supposing that third antenna a period of time launches, the reception amplitude of the second antenna element and phase place are respectively P
3 2and H
3 2(represent with subscript and launch a period of time position, subscript represents reception a period of time position), reception amplitude and the phase place of the 4th antenna element are respectively P
3 4and H
3 4, so set the reception amplitude of first antenna element and phase place is respectively 1 and 0, then the reception amplitude in third antenna a period of time and phase place are respectively P
3 4/ P
3 2and H
3 4-H
3 2; The like, then the reception amplitude of 2K and phase relation are expressed and are specially (P
3 4/ P
3 2) * (P
5 6/ P
5 4) * ... * (P
2K-1 2K/ P
2K-1 2K-2) and (H
3 4-H
3 2)+(H
5 6-H
5 4)+... + (H
2K-1 2K-H
2K-1 2K- 2);
In described step 4, processor controls first antenna element, second antenna element Received signal strength, because the amplitude of odd number, even number antenna element and phase place are determined, with respective first antenna element of odd number, even number antenna element for benchmark, determine that amplitude and the phase relation specific implementation process of amplitude between odd and even number antenna and phase place and all antenna element are: suppose that the 3rd antenna element transmits, first antenna element receives amplitude and phase place is respectively P ＇
3 1with H ＇
3 1, second antenna element Received signal strength P ＇
3 2with H ＇
3 2, because first and second antenna element and the 3rd path phase that antenna element exists difference are H
x, amplitude difference is P
xif the amplitude of even number antenna element and phase invariant, then the amplitude in odd number a period of time and phase place become: P
x* (H ＇
3 2/ H ＇
3 1) * (P
2 3/ P
2 1) * (P
4 5/ P
4 3) * ... * (P
2K-2 2K-1/ P
2K-2 2K-3) and H
x+ (H ＇
3 2-H ＇
3 1)+(H
2 3-H
2 1)+(H
4 5-H
4 3)+... + (H
2K-2 2K-1-H
2K-2 2K-3).
5. a kind of digital array secondary radar numeral T/R component states detection method according to claim 1, it is characterized in that described step 5 is specially: repeat step 4, processor obtains two groups of transmission power levels and the phase value of each antenna element, by the transmission power level of each antenna element is compared with corresponding setting value, if the transmission power level of antenna element is less than corresponding setting value arbitrarily, then this antenna element existing problems; The phase differential of twice detection is compared with the corresponding phase differential set simultaneously, if the phase difference value that both sides are detected is less than the phase difference value of corresponding setting, then this antenna existing problems; Otherwise antenna element communication is normal.
6. a digital array secondary radar numeral T/R component states pick-up unit, is characterized in that comprising:
Numeral T/R assembly: during for having powered on but not entered normal traffic pattern, digital T/R assembly sends fixing prefix and incremental number;
Processor: for detecting fixing prefix and the whether wrong and statistics of incremental number is made mistakes number, if number of makeing mistakes is greater than threshold value of makeing mistakes, then judge that communication has problems; When makeing mistakes, number is less than or equal to threshold value of makeing mistakes, numeral T/R assembly sends the answer signal of signal noise or secondary radar to processor, when the answer signal amplitude statistics average of processor hypothesis signal noise amplitude and secondary radar is between the first statistical threshold and the second statistical threshold, statistics L numeral in second T/R assembly sends the answer signal of secondary radar to processor data amount; Judge the relation of the first statistical threshold, the second statistical threshold and data volume, judge whether optical-fibre communications has problems, if existing problems, then represent communication existing problems; Otherwise processor sends transmitting data D1-D5 to digital T/R assembly by optical fiber, the emissive power of the amplitude-controllable system numeral T/R assembly of this transmitting data; Numeral T/R assembly by transmitting chain by the emissive power corresponding with transmitting data, then received by receiver and resolve this coupled signal, then processor judges digital T/R assembly radio-frequency passage whether normal communication by coupled signal range value J1-J5, if digital T/R assembly can not normal communication, then representative digit T/R assembly communication existing problems; Otherwise suppose that digital array secondary radar antenna element number is N, 2K the antenna element that processor controls to be connected with digital T/R assembly transmits, control 2K-1 and 2K+1 antenna element Received signal strength being connected with digital T/R assembly simultaneously; Numeral T/R assembly passes to processor by after the signal resolution received by optical fiber, obtains the reception amplitude between odd number a period of time and phase relation; Reception amplitude between odd number antenna element and phase place are collected rear and are normalized by processor; In like manner, 2K-1 the antenna element that processor controls to be connected with digital T/R assembly transmits, control 2K-2 and 2K antenna element Received signal strength being connected with digital T/R assembly simultaneously, numeral T/R assembly passes to processor by after the signal resolution received by optical fiber, obtains the reception amplitude between even number a period of time and phase relation; Reception amplitude between even number antenna element and phase place are collected rear and are normalized by processor; Then processor controls the 3rd antenna element and transmits, simultaneous processor controls first antenna element, second antenna element Received signal strength, because the amplitude of odd number, even number antenna element and phase place are determined, with respective first antenna element of odd number, even number antenna element for benchmark, determine amplitude and the phase relation of amplitude between odd and even number antenna and phase place and all antenna element; Then processor obtains two groups of transmission power levels and the phase value of each antenna element, judges transmission power level and phase value and the relation of corresponding setting value, judges that whether antenna element is normal; The emissive power corresponding relation of wherein emissive power D1-D5 and digital T/R assembly is: emissive power D1-D5 is respectively for 47dbm, 44dbm, 41dbm, 38dbm, 35dbm, then J1-J5 respectively should in following scope 4000-3000,2000-1500,1000-750,500-375,250-187.5.
7. a kind of digital array secondary radar numeral T/R component states pick-up unit according to claim 6, it is characterized in that described digital T/R assembly is when normal traffic pattern, numeral T/R assembly sends the answer signal of signal noise or secondary radar to processor, when supposing that the answer signal amplitude statistics average of signal noise amplitude and secondary radar is between the first statistical threshold and the second statistical threshold, statistics L numeral in second T/R assembly sends the answer signal of secondary radar to processor data amount; Judge the relation of the first statistical threshold, the second statistical threshold and data volume, judge that the optical-fibre communications detailed process that whether has problems is:
Step 21: digital T/R assembly is when normal traffic pattern, numeral T/R assembly sends the answer signal of signal noise or secondary radar to processor, when supposing signal noise amplitude and answer signal amplitude average statistical between the first statistical threshold and the second statistical threshold, statistics L numeral in second T/R assembly sends to processor data amount; Wherein the first statistical threshold is less than the second statistical threshold;
Step 22: data volume is less than the first statistical threshold or quantity is greater than the second statistical threshold, then judge that digital T/R assembly optical-fibre communications has problems; Then when the first statistical threshold < data volume < second statistical threshold, the optical-fibre communications of digital T/R assembly is normal.
8. a kind of digital array secondary radar numeral T/R component states pick-up unit according to claim 6, it is characterized in that described processor sends transmitting data D1-D5 by optical fiber to digital T/R assembly, the emissive power of the amplitude-controllable system numeral T/R assembly of this transmitting data; Numeral T/R assembly by transmitting chain by the emissive power corresponding with transmitting data, then received by receiver and resolve this coupled signal, then by coupled signal range value J1-J5, processor judges whether normal communication detailed process is digital T/R assembly radio-frequency passage:
Step 31: processor sends transmitting data D1-D5 to digital T/R assembly by optical fiber, the emissive power of the amplitude-controllable system numeral T/R assembly of this transmitting data; Emissive power corresponding for transmitting data is launched by transmitting chain by numeral T/R assembly, coupling mechanism passes to after emissive power being coupled and accepts link, described receiver receives coupled signal, and to resolve this coupled signal range value be J1-J5, coupled signal range value J1-J5 is passed to processor by digital T/R assembly;
Step 32: coupled signal range value J1-J5 and coupled signal range value theoretical value T1-T5 compares by processor respectively; When any one value in coupled signal range value J1-J5 exceed corresponding coupled signal range value theoretical value T1-T5 ± amplitude range of 20%, then think that radio-frequency channel has problems; When neither one in coupled signal range value J1-J5 exceed corresponding coupled signal range value theoretical value T1-T5 ± amplitude range of 20%, and (J1/T1+J2/T2+J3/T3+J4/T4+J5/T5)/5 are greater than 1.1 or be less than 0.9, then think that radio-frequency channel has problems; In addition, digital T/R assembly radio-frequency passage is judged to be normally.
9. a kind of digital array secondary radar numeral T/R component states pick-up unit according to claim 6, it is characterized in that the reception amplitude between odd number antenna element and phase place are collected afterwards and are normalized detailed process by described processor is: when supposing that the second antenna element is launched, the reception amplitude of the first antenna element and phase place are respectively P
2 1and H
2 1, wherein the subscript of acceptance latitude and phase place represents transmitting a period of time position, and subscript represents reception a period of time position; The reception amplitude in third antenna a period of time and phase place are respectively P
2 3and H
2 3, so set the reception amplitude of first antenna element and phase place is respectively 1 and 0, then the reception amplitude in third antenna a period of time and phase place are respectively P
2 3/ P
2 1and H
2 3-H
2 1; The like, then the reception amplitude of 2K-1 and phase relation are expressed and are specially (P
2 3/ P
2 1) * (P
4 5/ P
4 3) * ... * (P
2K-2 2K-1/ P
2K-2 2K-3) and (H
2 3-H
2 1)+(H
4 5-H
4 3)+... + (H
2K-2 2K-1-H
2K-2 2K-3);
Reception amplitude between even number antenna element and phase place are collected afterwards and are normalized detailed process by described processor: when supposing that third antenna a period of time launches, the reception amplitude of the second antenna element and phase place are respectively P
3 2and H
3 2(represent with subscript and launch a period of time position, subscript represents reception a period of time position), reception amplitude and the phase place of the 4th antenna element are respectively P
3 4and H
3 4, so set the reception amplitude of first antenna element and phase place is respectively 1 and 0, then the reception amplitude in third antenna a period of time and phase place are respectively P
3 4/ P
3 2and H
3 4-H
3 2; The like, then the reception amplitude of 2K and phase relation are expressed and are specially (P
3 4/ P
3 2) * (P
5 6/ P
5 4) * ... * (P
2K-1 2K/ P
2K-1 2K-2) and (H
3 4-H
3 2)+(H
5 6-H
5 4)+... + (H
2K-1 2K-H
2K-1 2K-2);
Described processor controls first antenna element, second antenna element Received signal strength, because the amplitude of odd number, even number antenna element and phase place are determined, with respective first antenna element of odd number, even number antenna element for benchmark, determine that amplitude and the phase relation specific implementation process of amplitude between odd and even number antenna and phase place and all antenna element are: suppose that the 3rd antenna element transmits, first antenna element receives amplitude and phase place is respectively P ＇
3 1with H ＇
3 1, second antenna element Received signal strength P ＇
3 2with H ＇
3 2, because first and second antenna element and the 3rd path phase that antenna element exists difference are H
x, amplitude difference is P
xif the amplitude of even number antenna element and phase invariant, then the amplitude in odd number a period of time and phase place become: P
x* (H ＇
3 2/ H ＇
3 1) * (P
2 3/ P
2 1) * (P
4 5/ P
4 3) * ... * (P
2K-2 2K-1/ P
2K-2 2K-3) and
H
X+(H＇
3 2-H＇
3 1)+(H
2 3-H
2 1)+(H
4 5-H
4 3)+…+(H
2K-2 2K-1-H
2K-2 2K-3)。
10. a kind of digital array secondary radar numeral T/R component states pick-up unit according to claim 6, it is characterized in that described processor obtains two groups of transmission power levels and the phase value of each antenna element, judge the relation of transmission power level and phase value and corresponding setting value, judge that the whether normal detailed process of antenna element is: processor obtains two groups of transmission power levels and the phase value of each antenna element, by the transmission power level of each antenna element is compared with corresponding setting value, if the transmission power level of antenna element is less than corresponding setting value arbitrarily, then this antenna element existing problems, the phase differential of twice detection is compared with the corresponding phase differential set simultaneously, if the phase difference value that both sides are detected is less than the phase difference value of corresponding setting, then this antenna existing problems, otherwise antenna element communication is normal.
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