CN205861897U - Dual-band frequency diversity array radar system - Google Patents
Dual-band frequency diversity array radar system Download PDFInfo
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- CN205861897U CN205861897U CN201620788609.4U CN201620788609U CN205861897U CN 205861897 U CN205861897 U CN 205861897U CN 201620788609 U CN201620788609 U CN 201620788609U CN 205861897 U CN205861897 U CN 205861897U
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Abstract
This utility model provides dual-band frequency diversity array radar system, belongs to Radar Signal Processing Technology field, is made up of the most linearly aligned N number of array element, and wherein N is positive integer；Each array element includes emitting portion and receiving portion.Emitting portion includes modulated signal maker, double sideband modulation device and launches antenna；The outfan of modulated signal maker is connected with the input of double sideband modulation device, and the outfan of double sideband modulation device connects launches antenna.Receiving portion includes reception antenna, bank of filters and positioning calculation unit；Bank of filters is consisted of the narrow band filter that frequency is different by 2；Reception antenna is simultaneously connected with the input of these 2 narrow band filters, and the outfan of 2 narrow band filters is connected with the input of positioning calculation unit simultaneously.
Description
Technical field
This utility model relates to Radar Signal Processing Technology field, is specifically related to a kind of dual-band frequency diversity array radar
System.
Background technology
Radar Targets'Detection technology is all widely used in military and civilian field demand.Phased array is widely used in
Radar target positions, but owing to its beam pattern is the most relevant with angle, it is impossible to extracting directly target from its beam pattern
Range information, also cannot effectively suppress interference and the clutter of distance dependence.
Frequency diversity array (frequency diverse array, FDA) relies both on distance and the wave beam side of angle
Xiang Tu so that it is become the focus of Chinese scholars research in recent years.But due to its intrinsic distance, angle coupling, it is impossible to directly
Distance and angle information is extracted from its beam pattern.Additionally, it is the most logical to realize frequency diversity array radar target acquisition at present
Cross the methods such as the FDA submatrix using multiple different frequency to bias or FDA and phased array combined transceiving, be not readily used for actual scene and
Relatively difficult to achieve.
Utility model content
Technical problem to be solved in the utility model is that existing frequency diversity array cannot the distance of extracting directly target
And angle information, and it is not readily used for actual scene and problem relatively difficult to achieve, it is provided that a kind of dual-band frequency diversity array radar
System.
For solving the problems referred to above, this utility model is achieved through the following technical solutions:
Dual-band frequency diversity array radar system, is made up of the most linearly aligned N number of array element, and wherein N is just
Integer；Each array element includes emitting portion and receiving portion；Wherein
Emitting portion includes modulated signal maker, double sideband modulation device and launches antenna；Modulated signal maker defeated
Going out end to be connected with the input of double sideband modulation device, the outfan of double sideband modulation device connects launches antenna；
Receiving portion includes reception antenna, bank of filters and positioning calculation unit；Bank of filters is different by frequency by 2
Narrow band filter composition；Reception antenna is simultaneously connected with the input of these 2 narrow band filters, the output of 2 narrow band filters
End is connected with the input of positioning calculation unit simultaneously.
In such scheme, the double sideband modulation device of the most each array element is mainly made up of multiplier；The one of multiplier
Individual input is connected with modulated signal maker, another input incoming carrier signal of multiplier.
Further, in such scheme, the carrier signal that the double sideband modulation device of the most each array element is accessed is equal
Identical.
In such scheme, the emitting portion of the most each array element still further comprises amplitude normalization adjustment unit,
This amplitude normalization adjustment unit is serially connected in double sideband modulation device and launches between antenna, and i.e. amplitude normalization adjustment unit is defeated
Entering end to be connected with the outfan of double sideband modulation device, the outfan of amplitude normalization adjustment unit is connected with launching antenna.
In such scheme, 2 narrow band filters of the preferably n-th array element be respectively f by frequency0-n Δ f and f0
+nΔf；Wherein n=1,2 ..., N, N are the number of array element, f0For array carrier frequency, Δ f is offset frequency.
Compared with prior art, this utility model has a characteristic that
1, this utility model just can obtain the angle of remote object in the case of launching single frequency offset signal
And range information.
2, further, the present invention can complete the unifrequency offset signal location of single target.
3, the transmitting signal of object localization method of the present utility model need not carrier wave DC information, effectively save and send out
Penetrate power.
4, transmitted waveform of the present utility model does not comprise carrier component, can be effectively improved anti-interference and Anti TBIgG
Ability.
Accompanying drawing explanation
Fig. 1 is the principle schematic of the emitting portion of dual-band frequency diversity array radar system.
Fig. 2 is the principle schematic of double sideband modulation device.
Fig. 3 is the principle schematic of the receiving portion of dual-band frequency diversity array radar system.
Fig. 4 is upper side band-lower sideband Combined estimator figure.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is further described:
Dual-band frequency diversity array radar system, as it is shown in figure 1, be made up of the most linearly aligned N number of array element,
Wherein N is positive integer.Being spaced apart d between array element and array element, wherein d generally launches 1/2 wavelength of signal, and each array element includes
Emitting portion and receiving portion.
Emitting portion includes modulated signal maker, double sideband modulation device, amplitude normalization adjustment unit and launches antenna；
The outfan of modulated signal maker is connected with the input of double sideband modulation device, and modulated signal maker is through ovennodulation output frequency
Sinusoidal signal x that rate is differentn(t)=cos (2 π n Δ ft), wherein n=1,2 ..., N.The double sideband modulation device of each array element is main
It is made up of multiplier；One input of multiplier is connected with modulated signal maker, and another input of multiplier accesses
Carrier signal, wherein carrier signal is cos (2 π f0T), f0For array carrier frequency, t is the time.The double-side band of each array element is adjusted
The sinusoidal signal that frequency that device processed exports modulated signal maker is different obtains modulated signal after being multiplied with carrier signal.Due to
Amplitude normalization adjustment unit is serially connected in double sideband modulation device and launches between antenna, and therefore modulated signal is through amplitude normalization
After adjustment unit, then launched, as shown in Figure 1, 2 by launching sky bundle of lines modulated signal.
Receiving portion includes reception antenna, bank of filters and positioning calculation unit；Bank of filters is different by frequency by 2
Narrow band filter composition；Reception antenna is simultaneously connected with the input of these 2 narrow band filters, the output of 2 narrow band filters
End is connected with the input of positioning calculation unit simultaneously.2 narrow band filters of the n-th array element be respectively f by frequency0-n
Δ f and f0+nΔf；Wherein n=1,2 ..., N, N are the number of array element, f0For array carrier frequency, Δ f is offset frequency.Echo
Signal is received by reception antenna, and is filtered obtaining upper side band signal through the reception antenna bank of filters of N number of array element
And lower sideband signal；Reception antenna positioning calculation unit carries out coherent detection respectively to all lower sideband signals and upper side band signal
Lower sideband echo response and upper side band echo response is obtained, as shown in Figure 3 with overlap-add procedure.
Fig. 4 is described dual-band frequency diversity array target localization method analogous diagram, and simulation parameter is: N=30, f0=
10G, Δ f=100K, d=λ0/ 2, coordinate of ground point is (0 °, 10km).In figure coordinate at Amplitude maxima be (0 °,
10km), meet with coordinate of ground point.There is also the curve that two amplitudes are about 30 in figure, the curve that wherein slope is positive is
Amplitude maxima after the upper side band signal coherent superposition that each array element receives, the coordinate of its correspondence is upper side band angle-distance
Estimated value set；The curve that slope is negative is the Amplitude maxima after the lower sideband signal coherent superposition that each array element receives,
The coordinate of its correspondence is the estimated value set of lower sideband angle-distance；In figure, amplitude maximum is the point of intersection of two curves, its
Corresponding angle-distance value that coordinate is impact point.
Claims (5)
1. dual-band frequency diversity array radar system, it is characterised in that: it is made up of the most linearly aligned N number of array element,
Wherein N is positive integer；Each array element includes emitting portion and receiving portion；Wherein
Emitting portion includes modulated signal maker, double sideband modulation device and launches antenna；The outfan of modulated signal maker
Being connected with the input of double sideband modulation device, the outfan of double sideband modulation device connects launches antenna；
Receiving portion includes reception antenna, bank of filters and positioning calculation unit；Bank of filters by 2 by different narrow of frequency
Band filter forms；Reception antenna is simultaneously connected with the input of these 2 narrow band filters, and the outfan of 2 narrow band filters is same
Time be connected with the input of positioning calculation unit.
Dual-band frequency diversity array radar system the most according to claim 1, it is characterised in that: each array element bilateral
Band manipulator is mainly made up of multiplier；One input of multiplier is connected with modulated signal maker, another of multiplier
Individual input incoming carrier signal.
Dual-band frequency diversity array radar system the most according to claim 2, it is characterised in that: each array element bilateral
The carrier signal accessed with manipulator is the most identical.
Dual-band frequency diversity array radar system the most according to claim 1, it is characterised in that: the transmitting of each array element
Part still further comprises amplitude normalization adjustment unit, and this amplitude normalization adjustment unit is serially connected in double sideband modulation device and sends out
Penetrate between antenna, i.e. the input of amplitude normalization adjustment unit is connected with the outfan of double sideband modulation device, amplitude normalization
The outfan of adjustment unit is connected with launching antenna.
Dual-band frequency diversity array radar system the most according to claim 1, it is characterised in that: 2 of the n-th array element
Narrow band filter be respectively f by frequency0-n Δ f and f0+nΔf；Wherein n=1,2 ..., N, N are the number of array element, f0For
Array carrier frequency, Δ f is offset frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620788609.4U CN205861897U (en) | 2016-07-25 | 2016-07-25 | Dual-band frequency diversity array radar system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620788609.4U CN205861897U (en) | 2016-07-25 | 2016-07-25 | Dual-band frequency diversity array radar system |
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| Publication Number | Publication Date |
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| CN205861897U true CN205861897U (en) | 2017-01-04 |
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ID=57648618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201620788609.4U Withdrawn - After Issue CN205861897U (en) | 2016-07-25 | 2016-07-25 | Dual-band frequency diversity array radar system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108196231A (en) * | 2018-03-26 | 2018-06-22 | 电子科技大学 | A kind of S-shaped interfering beam implementation method based on novel frequency control battle array technology |
| CN108306115A (en) * | 2018-01-31 | 2018-07-20 | 电子科技大学 | A kind of space-time modulation array antenna system and its production method |
| CN106093926B (en) * | 2016-07-25 | 2018-10-19 | 桂林电子科技大学 | Dual-band frequency diversity array radar system and its object localization method |
| CN108776337A (en) * | 2018-04-24 | 2018-11-09 | 桂林电子科技大学 | MIMO-FDA Ground Penetrating Radar close-target two-dimensional imaging methods |
-
2016
- 2016-07-25 CN CN201620788609.4U patent/CN205861897U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106093926B (en) * | 2016-07-25 | 2018-10-19 | 桂林电子科技大学 | Dual-band frequency diversity array radar system and its object localization method |
| CN108306115A (en) * | 2018-01-31 | 2018-07-20 | 电子科技大学 | A kind of space-time modulation array antenna system and its production method |
| CN108196231A (en) * | 2018-03-26 | 2018-06-22 | 电子科技大学 | A kind of S-shaped interfering beam implementation method based on novel frequency control battle array technology |
| CN108196231B (en) * | 2018-03-26 | 2021-09-28 | 电子科技大学 | S-shaped interference wave beam implementation method based on novel frequency control array technology |
| CN108776337A (en) * | 2018-04-24 | 2018-11-09 | 桂林电子科技大学 | MIMO-FDA Ground Penetrating Radar close-target two-dimensional imaging methods |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170104 Effective date of abandoning: 20181019 |