CN101109799A - Sense finding device for solid base line broad band microwave radiation source and sense finding method thereof - Google Patents
Sense finding device for solid base line broad band microwave radiation source and sense finding method thereof Download PDFInfo
- Publication number
- CN101109799A CN101109799A CNA2007100724802A CN200710072480A CN101109799A CN 101109799 A CN101109799 A CN 101109799A CN A2007100724802 A CNA2007100724802 A CN A2007100724802A CN 200710072480 A CN200710072480 A CN 200710072480A CN 101109799 A CN101109799 A CN 101109799A
- Authority
- CN
- China
- Prior art keywords
- radiation source
- microwave radiation
- angle
- bay
- frequency
- 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.)
- Pending
Links
Images
Abstract
The invention provides a stereo baseline wide-band direction-finding device and method for microwave radiation source comprising 6 antenna array elements, a hi-frequency assembly, an instantaneous frequency-measuring receiver, a frequency mixer, a mid-frequency amplifier, a local oscillation source, a digital receiver and a signal processor. The info on phase of the microwave radiation source got through the antenna array elements is used to calculate the phase difference between antenna array elements; the position angle and pitch angle of the microwave radiation source are calculated based on the relationship between the phase difference of the microwave radiation source and the position angle/pitch angle of the microwave radiation source; the 2D direction-finding fuzzy is worked out by using the results of the antenna array elements. In this way, the concurrent no-fuzzy hi-accuracy direction finding of the position angle and pitch angle of the microwave radiation source are realized in a wideband range; and the flexible arrangement form of the antenna array elements allows reasonable arrangement of the location of the antenna array elements so as to meet the requirement for application in cases with limited volume of antenna tray or with limited position for the antenna array elements.
Description
Technical field
What the present invention relates to is a kind of Detection Techniques, more precisely belongs to the passive radar detection technical field.
Background technology
The operating frequency range of modern radar system is very wide, The radar exploration technique is had higher requirement, therefore the counter radiation target seeker must have wide frequency coverage, and, requirement has more flexibly been proposed also for the form of putting of bay on the target seeker antenna bay along with the appearance of combined guidance mode.But direction-finding methods such as existing length baseline need less bay spacing to guarantee the high-end fuzzy direction finding of nothing of frequency of emitter Signals, because the restriction of the physical size of bay itself and can not realize putting of less spacing between the bay can't realize that then the high-end nothing of frequency of emitter Signals is blured direction finding; And direction-finding method such as length baseline need constitute the inverted-L antenna battle array when realizing two-dimentional direction finding, and it is single that it puts form, and this may clash with the bay of other guided modes in the combined guidance mode or the position of sensor.
Summary of the invention
The objective of the invention is to the broadband Passive Radar Seeker provide a kind of fast, accurately, the microwave radiation source direction-finding device of the solid base line broad band that is easy to realize.The present invention also aims to provide a kind of direction-finding method based on the solid base line broad band microwave radiation source direction-finding device.
The object of the present invention is achieved like this: be made up of six bays, high frequency assembly, instantaneous frequency measurement receiver, frequency mixer, intermediate frequency amplifier, local vibration source, A/D converter, digital receiver and signal processors, the microwave signal that microwave radiation source sends receives through one of them bay, through instantaneous frequency measurement receiver, record frequency information and send into signal processor and participate in resolving; The microwave signal that microwave radiation source sends receives through other five bays, five bay back connect high frequency assembly, microwave signal through high frequency assembly filtering out-of-band noise, with microwave signal frequency the local oscillation signal input mixer of fixed frequency difference is arranged with what produce by signal processor control local vibration source, the intermediate-freuqncy signal of the dead center frequency that frequency mixer produces is input to intermediate frequency amplifier, be input to A/D converter through the intermediate frequency amplifier amplified IF signal and carry out analog to digital conversion, the digital receiver that links to each other with A/D converter is input to signal processor with the phase information of microwave radiation source, then in conjunction with the frequency information that is input to signal processor, adopt stereo base direction finding algorithm proposed by the invention to calculate the position angle and the angle of pitch of microwave radiation source, then by the position angle and the angle of pitch of signal processor output microwave radiation source at signal processor.
Device of the present invention can also comprise some features like this:
1, described antenna is both arms flat helical antenna or other form all channel antennas.
2, described bay is six, five bays that wherein are used for direction finding are put into form (or other arbitrary forms of uniform circular array along antenna bay, can require adjust according to actual antennas dish size and real work), the center of bay is several times to tens times of radiation source minimal wave length to the distance in the antenna bay center of circle; The bay that links to each other with instantaneous frequency measurement receiver can be put the antenna bay center of circle.
Direction-finding method based on the solid base line broad band microwave radiation source direction-finding device of the present invention is: three bays choosing arbitrarily in five bays constitute first group of antenna array, three incomplete same bays of choosing in five bays constitute second group of antenna array, and the rest may be inferred; Resolve according to the phase differential of microwave radiation source and the position angle of microwave radiation source and the relation between the angle of pitch, every group of antenna array solves many values to the position angle and the angle of pitch, to many position angle and the angle of pitch being compared that each group antenna array solves, find out a pair of position angle close in certain error range and the value of the angle of pitch, be microwave radiation source come to, realize that finally the position angle of microwave radiation source in the broad frequency range and the angle of pitch do not have high-precision direction finding fuzzy the time.
The present invention is the solid base line broad band microwave radiation source direction-finding device, the stereo base direction finding algorithm that this device utilization the present invention proposes, three bays promptly choosing arbitrarily in five bays constitute first group of antenna array, three incomplete same bays of choosing in five bays constitute second group of antenna array, and the rest may be inferred; The phase differential of the microwave radiation source that receives according to bay and the position angle of microwave radiation source and the relation between the angle of pitch are resolved then, every group of antenna array solves the value of the many prescriptions parallactic angle and the angle of pitch, the position angle and the angle of pitch that each group antenna array is solved compare, find out a prescription parallactic angle close in certain error range and the value of the angle of pitch, be microwave radiation source come to, realize that finally the angle, broad frequency range interior orientation and the angle of pitch do not have high-precision direction finding fuzzy the time.It is flexible that the bay of this device is put form, can save the antenna bay volume, and this apparatus structure is simple, is easy to Project Realization.
The present invention to the broadband Passive Radar Seeker provide a kind of fast, accurately, the direction-finding device that is easy to realize, be applicable to multimode combined guidance target seeker, and can survey all interior radar systems of covering frequence scope, it is carried out accurate direction finding, can also follow the tracks of mobile radar system as required.
The stereo base direction-finding device that the present invention proposes has been avoided the conflict of position between sensor or the bay, has satisfied the demand that realizes high-precision direction finding in the broad frequency range in small size more.
Description of drawings
Fig. 1 is a bay relative position synoptic diagram of the present invention;
Fig. 2 is a realization block diagram of the present invention;
Fig. 3 is the program flow diagram of stereo base direction finding algorithm of the present invention.
Embodiment
For example the present invention is described in further detail below in conjunction with accompanying drawing:
In conjunction with Fig. 1, bay 0 is placed in the antenna bay center of circle, the form that bay 1～5 is put into uniform circular array along antenna bay, and r is the distance of bay center to the antenna bay center of circle, r can get several times to tens times of microwave radiation source minimal wave length.For guaranteeing direction finding precision, usually the phase differential that can choose the microwave radiation source between the bigger bay of spacing carries out finding the solution of the microwave radiation source position angle and the angle of pitch, and can introduce the many-valued fuzziness of finding the solution so inevitably, three bays can choosing arbitrarily in five bays constitute first group of antenna array, three incomplete same bays of choosing in five bays constitute second group of antenna array, and the rest may be inferred; Resolve according to the position angle of bay phase differential and microwave radiation source and the relation between the angle of pitch, every group of antenna array solves many values to the position angle and the angle of pitch, the position angle and the angle of pitch that each group antenna array is solved compare, find out a prescription parallactic angle close in certain error range and the value of the angle of pitch, be microwave radiation source come to, for example utilize bay 1,3,4 form first group of antenna array, bay 1,2,4 form second group of antenna array, bay 1,3,5 form the 3rd group of antenna array, three groups of antenna arrays are found the solution respectively, every group of antenna array solves many to the position angle of microwave radiation source and the value of the angle of pitch respectively, then three class values are compared, the position angle of a pair of close microwave radiation source that value of each group all comprises in certain error range and the value of the angle of pitch, be microwave radiation source come to.Stereo base microwave radiation source direction-finding device has just realized that the angle, broad frequency range interior orientation and the angle of pitch do not have high-precision direction finding fuzzy the time like this.
Bay relative position synoptic diagram shown in Figure 1 is a kind of form of simply putting, and there is no this restriction in the practical application, can adjust the putting position of bay 0～5 on antenna bay according to different needs, does not influence the solution procedure of the position angle and the angle of pitch.
In conjunction with Fig. 2, stereo base molded breadth frequency band microwave radiation source direction-finding device of the present invention is by bay 0～5, high frequency assembly 6, frequency mixer 7～11, intermediate frequency amplifier 12～16, local vibration source 17, instantaneous frequency measurement receiver 20, A/D converter 21～25, digital receiver 31, whole compositions such as signal processor 32.Bay 0～5 adopts all channel antenna, covering wide frequency band and the big measurement of angle scope of both arms flat helical antenna or other form.The bay back connects high frequency assembly 6, the filtering out-of-band noise, local vibration source 17 is subject to processing device control, produce the microwave signal that fixed frequency difference is arranged with the incoming signal frequency, pass through frequency mixer 7～11 with incoming signal, produce the intermediate-freuqncy signal of dead center frequency, after this intermediate-freuqncy signal is amplified through intermediate frequency amplifier 12～16, entering A/D converter 21～25 carries out entering digital receiver 31 after the analog to digital conversion, digital receiver 31 back connect signal processor 32, the microwave radiation source frequency information that signal processor 32 utilizes the microwave radiation source phase differential combination between bay to obtain from instantaneous frequency measurement receiver 20, adopt the stereo base algorithm, promptly according to the relation of the microwave radiation source phase differential that receives between the solid space different antenna element and the microwave radiation source position angle and the angle of pitch, utilize many group antenna arrays to carry out finding the solution of the microwave radiation source position angle and the angle of pitch, then each group solving result is compared, draw the information of the microwave radiation source position angle and the angle of pitch at last.The present invention is a solid base line broad band microwave radiation source direction-finding device, the microwave radiation source that utilization receives arrives the microwave radiation source phase information between each bay, adopt several groups of antenna arrays to find the solution, realize that the position angle of microwave radiation source in the broad frequency range and the angle of pitch do not have high-precision direction finding fuzzy the time, and have flexible antenna array element and put form, can adapt to the limited applications of multimode combined guidance equal-volume.
Fig. 3 is the program flow diagram of stereo base direction finding algorithm of the present invention, receive the information entering signal processor 32 of microwave radiation source, in signal processor 32, calculate the phase differential of the microwave radiation source between different antenna element, and it is averaged, resolve according to the relation of the position angle of the phase differential of the microwave radiation source that calculates and microwave radiation source and the angle of pitch the position angle and the angle of pitch then microwave radiation source, because the bay spacing may be several times microwave radiation source signal wavelength, so can there be many group fuzzy solutions in every group of antenna array solving result, do not exist fuzzy separating to be the position angle and the angle of pitch of microwave radiation source if having, if respectively organizing antenna array finds the solution the position angle and the angle of pitch result of microwave radiation source and all exists fuzzy, then the result that each group antenna array is found the solution compares, find out and in certain error range, respectively organize the position angle and the angle of pitch that is microwave radiation source of separating that the result all exists, take place because the influence of direction finding environment may cause not having the situation of separating, find the solution again so next time.This part is the specific implementation process of algorithm of the present invention.
Claims (4)
1. solid base line broad band microwave radiation source direction-finding device, form by six bays, high frequency assembly, instantaneous frequency measurement receiver, frequency mixer, intermediate frequency amplifier, local vibration source, digital receiver and signal processors, it is characterized in that: the microwave signal that microwave radiation source sends receives through one of them bay, records frequency information through instantaneous frequency measurement receiver and sends into signal processor; The microwave signal that microwave radiation source sends receives through other five bays, five bay back connect high frequency assembly, microwave signal through high frequency assembly filtering out-of-band noise, with the microwave radiation source signal frequency local oscillation signal input mixer of fixed frequency difference is arranged with what produce by signal processor control local vibration source, the intermediate-freuqncy signal input intermediate frequency amplifier of the dead center frequency that frequency mixer produces, the intermediate-freuqncy signal of amplifying through intermediate frequency amplifier is input to A/D converter and carries out analog to digital conversion, the phase information of the microwave radiation source that the digital receiver that links to each other with A/D converter will obtain from five bays is input to signal processor, in signal processor, adopt stereo base direction finding algorithm proposed by the invention, calculate the position angle and the angle of pitch of microwave radiation source.
2. solid base line broad band microwave radiation source direction-finding device according to claim 1, it is characterized in that: described bay is six, five forms that bay is put into uniform circular array along antenna bay that wherein are used for direction finding, the center of bay are several times to tens times of microwave radiation source minimal wave length to the distance in the antenna bay center of circle; The bay that links to each other with instantaneous frequency measurement receiver is placed in the antenna bay center of circle.
3. solid base line broad band microwave radiation source direction-finding device according to claim 1 and 2 is characterized in that: described antenna is both arms flat helical antenna or other form all channel antennas.
4. direction-finding method based on the solid base line broad band microwave radiation source direction-finding device, it is characterized in that: three bays choosing arbitrarily in five bays constitute first group of antenna array, three incomplete same bays of choosing in five bays constitute second group of antenna array, and the rest may be inferred; Resolve according to the phase differential of microwave radiation source and the position angle of microwave radiation source and the relation between the angle of pitch, every group of antenna array solves many values to the position angle and the angle of pitch, to many position angle and the angle of pitch being compared that each group antenna array solves, find out a pair of position angle close in certain error range and the value of the angle of pitch, be microwave radiation source come to, realize that finally the position angle of microwave radiation source in the broad frequency range and the angle of pitch do not have high-precision direction finding fuzzy the time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100724802A CN101109799A (en) | 2007-07-06 | 2007-07-06 | Sense finding device for solid base line broad band microwave radiation source and sense finding method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100724802A CN101109799A (en) | 2007-07-06 | 2007-07-06 | Sense finding device for solid base line broad band microwave radiation source and sense finding method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101109799A true CN101109799A (en) | 2008-01-23 |
Family
ID=39041954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100724802A Pending CN101109799A (en) | 2007-07-06 | 2007-07-06 | Sense finding device for solid base line broad band microwave radiation source and sense finding method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101109799A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101403791B (en) * | 2008-11-06 | 2011-01-26 | 哈尔滨工程大学 | Fast real-time space spectrum estimation ultra-resolution direction-finding device and method thereof |
| CN101383691B (en) * | 2008-10-14 | 2011-03-16 | 哈尔滨工程大学 | Wideband digital channelized direction measuring device |
| CN102419429A (en) * | 2011-09-13 | 2012-04-18 | 上海无线电设备研究所 | Onboard search machine |
| CN102736057A (en) * | 2012-06-18 | 2012-10-17 | 西安空间无线电技术研究所 | Two-dimensional angle calculating method based on distance and tracking regeneration carrier phase |
| CN104215941A (en) * | 2014-08-13 | 2014-12-17 | 芜湖航飞科技股份有限公司 | Pulse Doppler weather radar receiver |
| CN104749555A (en) * | 2014-12-19 | 2015-07-01 | 中国航天科技集团公司第五研究院第五一三研究所 | Phase difference direction finding and spatial spectrum direction finding combined direction-finding positioning system |
| CN104991225A (en) * | 2015-06-23 | 2015-10-21 | 中国电子科技集团公司第三十六研究所 | Method and device for direction finding ambiguity resolution of phase interferometer |
| CN105954707A (en) * | 2016-04-20 | 2016-09-21 | 东南大学 | Method for reducing multi-value problem in direction finding process based on isosceles trapezoid receiving array |
| CN107450048A (en) * | 2017-09-11 | 2017-12-08 | 成都信息工程大学 | A kind of antenna angle-measuring method and system |
| CN111044971A (en) * | 2019-12-23 | 2020-04-21 | 南京长峰航天电子科技有限公司 | Two-dimensional interferometer direction finding system |
| CN112346003A (en) * | 2020-10-20 | 2021-02-09 | 西安空间无线电技术研究所 | Equipotential optimization-based single-beam direction finding system |
-
2007
- 2007-07-06 CN CNA2007100724802A patent/CN101109799A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101383691B (en) * | 2008-10-14 | 2011-03-16 | 哈尔滨工程大学 | Wideband digital channelized direction measuring device |
| CN101403791B (en) * | 2008-11-06 | 2011-01-26 | 哈尔滨工程大学 | Fast real-time space spectrum estimation ultra-resolution direction-finding device and method thereof |
| CN102419429A (en) * | 2011-09-13 | 2012-04-18 | 上海无线电设备研究所 | Onboard search machine |
| CN102736057A (en) * | 2012-06-18 | 2012-10-17 | 西安空间无线电技术研究所 | Two-dimensional angle calculating method based on distance and tracking regeneration carrier phase |
| CN102736057B (en) * | 2012-06-18 | 2014-05-28 | 西安空间无线电技术研究所 | Two-dimensional angle calculating method based on distance and tracking regeneration carrier phase |
| CN104215941A (en) * | 2014-08-13 | 2014-12-17 | 芜湖航飞科技股份有限公司 | Pulse Doppler weather radar receiver |
| CN104749555A (en) * | 2014-12-19 | 2015-07-01 | 中国航天科技集团公司第五研究院第五一三研究所 | Phase difference direction finding and spatial spectrum direction finding combined direction-finding positioning system |
| CN104991225A (en) * | 2015-06-23 | 2015-10-21 | 中国电子科技集团公司第三十六研究所 | Method and device for direction finding ambiguity resolution of phase interferometer |
| CN105954707A (en) * | 2016-04-20 | 2016-09-21 | 东南大学 | Method for reducing multi-value problem in direction finding process based on isosceles trapezoid receiving array |
| CN105954707B (en) * | 2016-04-20 | 2018-06-12 | 东南大学 | A kind of method for the reduction direction finding multivalue problem that battle array is received based on isosceles trapezoid |
| CN107450048A (en) * | 2017-09-11 | 2017-12-08 | 成都信息工程大学 | A kind of antenna angle-measuring method and system |
| CN111044971A (en) * | 2019-12-23 | 2020-04-21 | 南京长峰航天电子科技有限公司 | Two-dimensional interferometer direction finding system |
| CN111044971B (en) * | 2019-12-23 | 2022-07-01 | 南京长峰航天电子科技有限公司 | Two-dimensional interferometer direction finding system |
| CN112346003A (en) * | 2020-10-20 | 2021-02-09 | 西安空间无线电技术研究所 | Equipotential optimization-based single-beam direction finding system |
| CN112346003B (en) * | 2020-10-20 | 2023-12-29 | 西安空间无线电技术研究所 | Single-beam direction finding system based on equipotential optimization |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101109799A (en) | Sense finding device for solid base line broad band microwave radiation source and sense finding method thereof | |
| CN111044971B (en) | Two-dimensional interferometer direction finding system | |
| RU56653U1 (en) | RADAR STATION | |
| CN101105525A (en) | Pure phase type broad frequency band microwave radiation source direction finding system and method | |
| US20090322592A1 (en) | Radar apparatus | |
| US5572213A (en) | Parameter encoder architecture | |
| CN103969631B (en) | Satellite-borne microwave radar system delay calibration method and calibrator (-ter) unit | |
| CN104297747A (en) | Phased array beam tracking method | |
| CN104931923A (en) | Grid iterative estimation of signal parameters via rotational invariance techniques (ESPRIT), namely, extensible rapid estimation algorithm capable of being used for uniform circular array 2-dimensional direction of arrival (2D DOA) | |
| US20100097266A1 (en) | Single platform passive coherent location using a digital receiver | |
| CN116068484A (en) | Direction finding method for realizing multi-beam monopulse signal by using amplitude comparison direction finding table | |
| CN107192473B (en) | Surface acoustic wave temperature detection system and detection method based on phased array antenna | |
| RU2315332C1 (en) | Radiolocation station | |
| KR102306061B1 (en) | Apparatus of multiple targets management for multistatic pcl based target localization | |
| CN109507638A (en) | A kind of amplitude-comprised direction-finding method and system | |
| CN115801144B (en) | Passive reconnaissance system | |
| CN115166715B (en) | Signal detection and tracking method and device of continuous wave phased array system | |
| KR101589269B1 (en) | Method and apparatus for estimating location | |
| CN106291527B (en) | Radar installations based on fixed directional antenna broad beam angle measurement | |
| CN111044970B (en) | Real-time high-precision direction finding method and system | |
| Qu et al. | A comparison study on TDOA based localization algorithms for sensor networks | |
| US8451174B1 (en) | Beam-scanning system | |
| Huo et al. | Compensation method of multiple‐channel amplitude and phase errors for MIMO imaging radar | |
| CN216485477U (en) | Radar sparse array antenna | |
| RU2429501C1 (en) | Detection and direction finding method of air objects |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080123 |