CN105261817A - Interferometer antenna array with vector synthesizer - Google Patents

Abstract

The invention discloses an interferometer antenna array with a vector synthesizer, comprising an antenna array part (1) and a vertical rod part (2). The antenna array part (1) includes three active vertically-polarized antennas (3), an antenna middle fixed seat (4), and three support devices (5). The antenna middle fixed seat (4) includes a support arm fixed seat (6), a support arm rotary seat (7), a support arm rotary seat symmetrical member (8), and a vertical rod base (9). The support arm rotary seat (7) and the support arm rotary seat symmetrical member (8) drive the support devices (5) and the active vertically-polarized antennas (3) to rotate horizontally through a rotating shaft (10), and are fixed by a locking device. The vertical rod part (2) includes a vector synthesizer (21). The invention provides an interferometer antenna array which is easy to install and remove. Antennas of different specifications can be chosen according to the actual situation, and the only thing needed is to install the antenna array parts of different specifications. The interferometer antenna array is convenient to store.

Description

A kind of interferometer antenna battle array being provided with vector synthesizer

Technical field

The present invention relates to a kind of interferometer antenna battle array being provided with vector synthesizer.

Background technology

Direction-finding station is according to propagation properties, uses instrument and equipment to measure the process of radio wave arrival bearing.Measure " arrival bearing ", refer to the direction that in the electromagnetic environment that direction-finder set location is tangible, electric wave reaches, direction-finding station, common final purpose will determine in " direction of radiation source " and " particular location of radiation source ".

For interferometer direction finding system, its direction finding principle is: according to electric wave in advancing, when electric wave from different directions arrives direction estimation antenna array, spatially the phase place of each direction-finder antenna unit reception is different, thus mutual phase difference is also different, by measuring wave phase and phase difference, arrival bearing can be determined.In interferometer direction finding mode, be the phase place directly measuring direction-finder antenna induced voltage, then solve phase difference, the formula of its mathematical formulae and the direction finding of amplitude comparison expression is quite similar.Interferometer direction finding has high, the fireballing feature of precision and is used widely in electronic warfare.

The feature of interferometer direction finding system: adopt and become Baseline, in can using, large base antenna battle array, adopts multichannel receiver, computer and FFT technology, make this system direction finder sensitivity high, direction finding accuracy is high, and direction finding speed is fast, can the elevation angle be surveyed, have certain anti-wavefront distortion ability.

Summary of the invention

The object of the invention is to overcome the deficiencies in the prior art, a kind of interferometer antenna battle array being provided with vector synthesizer deposited facilitated after installation and removal and dismounting being applicable to lift-off interferometer direction finding is provided, can select specification and the anglec of rotation according to actual conditions, and the radiofrequency signal Vector modulation received by three active vertical poliarizing antennas sends after being a radiofrequency signal.

The object of the invention is to be achieved through the following technical solutions: a kind of interferometer antenna battle array being provided with vector synthesizer, it comprises antenna array part and upright part; Described antenna array part comprises the bracing or strutting arrangement of holder and active vertical poliarizing antenna in the middle of holder, three connection antennas in the middle of three active vertical poliarizing antennas, an antenna; In the middle of described antenna, holder comprises a support arm holder, support arm rotation seat, a support arm rotation seat symmetrical member and a vertical rod base; Described support arm rotation seat and support arm rotation seat symmetrical member drive bracing or strutting arrangement and active vertical poliarizing antenna to horizontally rotate by rotating shaft, are fixed by locking device; Be arranged on support arm rotation seat respectively identical with the bracing or strutting arrangement length of two active vertical poliarizing antennas of support arm rotation seat symmetrical member, the active vertical poliarizing antenna being arranged on support arm holder is less than λ/2 with the horizontal linear distance of the active vertical poliarizing antenna being arranged on support arm rotation seat, and wherein λ/2 are the half-wavelength of maximum operating frequency; Described upright part comprises vertical rod and is arranged at the radio frequency cable of vertical rod inside, one end of described vertical rod connects aerial plug and vertical rod base by the tight lock tube of the first antenna, and the other end of vertical rod is by the second antenna tight lock tube connection data interface and outside direction-finding equipment.

The interferometer antenna battle array being provided with vector synthesizer also comprises a main holder, and described main holder is by the second antenna tight lock tube protected data interface.

Described locking device comprises rotating nut and rotating nut cover.

Described rotating shaft being provided with multiple is the keeper of fixed angle with support arm holder, for carrying out angle Selection when support arm rotation seat and support arm rotation seat symmetrical member rotate.

Described fixed angle comprises 30 degree, 45 degree, 60 degree, 90 degree, 120 degree, 135 degree and 150 degree.

One end that described bracing or strutting arrangement connects active vertical polarized antenna is provided with antenna fixing seat.

Described support arm rotation seat and support arm rotation seat symmetrical member are provided with rotation backing pin.

Described vector synthesizer comprises two SP3T switches, three hilted broadsword six throw switches, 0 degree of power combiner, 90 degree of power combiners, 180 degree of power combiners and 270 degree of power combiners, the input of the first SP3T switch receives the radiofrequency signal from the active vertical poliarizing antenna being arranged on support arm holder, the output of the first SP3T switch is connected with the first hilted broadsword six throw switch, and five outputs of the first hilted broadsword six throw switch are connected with the first input end of the first input end of the first input end of the first input end of 0 degree of power combiner, 90 degree of power combiners, 180 degree of power combiners, the first input end of 270 degree of power combiners and the 3rd hilted broadsword six throw switch respectively, the first input end of the second SP3T switch and the second input receive from being arranged on the active vertical poliarizing antenna of support arm rotation seat and being arranged on the active vertical poliarizing antenna of support arm rotation seat symmetrical member respectively, the output of the second SP3T switch is connected with the input of the second hilted broadsword six throw switch, wherein four outputs of the second hilted broadsword six throw switch respectively with the second input of 0 degree of power combiner, second input of 90 degree of power combiners, second input of 180 degree of power combiners is connected with the second input of 270 degree of power combiners, 5th output of the second hilted broadsword six throw switch passes through grounding through resistance, the output of 0 degree of power combiner, 90 degree of power combiners, 180 degree of power combiners and 270 degree of power combiners is connected with the second input of the 3rd hilted broadsword six throw switch, the 3rd input, four-input terminal and the 5th input respectively, and the radiofrequency signal after the output output vector synthesis of the 3rd hilted broadsword six throw switch is to data-interface.

0 degree of described power combiner, 90 degree of power combiners, 180 degree of power combiners and 270 degree of power combiners include a phase shifter and a synthesizer, the input of phase shifter receives the signal from the first hilted broadsword six throw switch and the second hilted broadsword six throw switch respectively, two outputs of phase shifter are connected with synthesizer, and the output of synthesizer is connected with the 3rd hilted broadsword six throw switch.

Described vector synthesizer also comprises a control inputs port, described control inputs port accepts outside Transistor-Transistor Logic level signal, for controlling to be arranged on the active vertical poliarizing antenna of support arm rotation seat and being arranged on the switching of active vertical poliarizing antenna of support arm rotation seat symmetrical member, and for controlling the phase place of phase shifter.

The invention has the beneficial effects as follows:

(1) the invention provides a kind of interferometer antenna battle array being convenient to installation and removal, active vertical poliarizing antenna specification can being selected different according to actual conditions, only the antenna array part of different size need be carried out installing; And after antenna array is used to complete, three active vertical poliarizing antennas is rotated to together, conveniently deposits.

(2) adopt rotation and locking device, make can selecting according to actual conditions of aerial angle, practical.

(3) further, because antenna in the process of installation and removal, can carry out opening and closing up, can produce the problem that angle recalculates by the present invention.And when have employed the mode arranging fixed angle keeper in rotating shaft, quick alignment can be carried out to conventional angle, easy to use and reliable.

(4) vector synthesizer is also arranged in interferometer antenna battle array by the present invention, and three radiofrequency signals received by three active vertical poliarizing antennas are synthesized, and the radiofrequency signal after synthesis is sent, and facilitates subsequent conditioning circuit to process.

Accompanying drawing explanation

Fig. 1 is the embodiment of the present invention 1 decomposition chart;

Fig. 2 is the structure chart after the embodiment of the present invention 1 has been assembled;

Fig. 3 is holder partial structurtes schematic diagram in the middle of antenna;

Fig. 4 is data-interface structural representation;

Fig. 5 is the embodiment of the present invention 2 decomposition chart;

Fig. 6 is vector synthesizer module frame chart of the present invention;

Fig. 7 is principle of the invention figure;

In figure, 1-antenna array part, 2-upright part, 3-active vertical poliarizing antenna, holder in the middle of 4-antenna, 5-bracing or strutting arrangement, 6-support arm holder, 7-support arm rotation seat, 8-support arm rotation seat symmetrical member, 9-vertical rod base, 10-rotating shaft, 11-vertical rod, 12-aerial plug, 13-data-interface, the tight lock tube of 14-first antenna, the tight lock tube of 15-second antenna, the main holder of 16-, 17-rotating nut, 18-rotating nut cover, 19-antenna fixing seat, 20-rotates backing pin, 21-vector synthesizer.

Embodiment

Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

As shown in Figure 1 and Figure 5, a kind of interferometer antenna battle array being provided with vector synthesizer, it comprises antenna array part 1 and upright part 2.

As shown in Figure 2, described antenna array part 1 comprises the bracing or strutting arrangement 5 of holder 4 and active vertical poliarizing antenna 3 in the middle of holder 4, three connection antennas in the middle of three active vertical poliarizing antennas, 3, antenna.

As shown in Figure 3, in the middle of described antenna, holder 4 comprises a support arm holder 6, support arm rotation seat 7, support arm rotation seat symmetrical member 8 and a vertical rod base 9; Described support arm rotation seat 7 and support arm rotation seat symmetrical member 8 drive bracing or strutting arrangement 5 and active vertical poliarizing antenna 3 to horizontally rotate by rotating shaft 10, are fixed by locking device.

Be arranged on support arm rotation seat 7 respectively identical with bracing or strutting arrangement 5 length of two active vertical poliarizing antennas of support arm rotation seat symmetrical member 8.

In order to avoid phase ambiguity, the active vertical poliarizing antenna 3 being arranged on support arm holder 6 is less than λ/2 with the horizontal linear distance of the active vertical poliarizing antenna 3 being arranged on support arm rotation seat 7, and wherein λ/2 are the half-wavelength of maximum operating frequency.

Be arranged on the antenna on support arm holder 6 and be arranged on the distance between the antenna on support arm rotation seat 7, equal with the distance between the antenna be arranged on support arm holder 6 and the antenna being arranged on support arm rotation seat symmetrical member 8, and be no more than λ/2, the i.e. half-wavelength of maximum operating frequency, phase place is no more than 180 degree.At this, we select 150 degree of maximum operating frequency.

Now, have two kinds of situations and produce, bracing or strutting arrangement 5 is shorter and bracing or strutting arrangement 5 is longer: as shown in Figure 1, embodiment 1 is for the longer situation of bracing or strutting arrangement 5, and antenna distance is 600mm, and operating frequency is now 70 ~ 200MHz; As shown in Figure 4, embodiment 2 is for the shorter situation of bracing or strutting arrangement 5, and antenna distance is 220mm, and operating frequency is now 200 ~ 500.

Described upright part 2 comprises vertical rod 11 and is arranged at the radio frequency cable of vertical rod 11 inside, one end of described vertical rod 11 connects aerial plug 12 and vertical rod base 9 by the tight lock tube 14 of the first antenna, as shown in Figure 4, the other end of vertical rod 11 is by the second antenna tight lock tube 15 connection data interface 13 and outside direction-finding equipment.

A kind of interferometer antenna battle array being provided with vector synthesizer also comprises main holder 16, and described main holder 16 is by the second antenna tight lock tube 15 protected data interface 13.

After antenna is used to complete, after carrying out the process dismantled, the data-interface 13 of upright part 2 can expose in atmosphere, and adopts main holder 16 pairs of data-interfaces 13 to protect, and improves the life-span of whole antenna array.

Described locking device comprises rotating nut 17 and rotating nut cover 18.Described rotating shaft 10 is provided with multiple with support arm holder 6 keepers in fixed angle, for carrying out angle Selection when support arm rotation seat 7 and support arm rotation seat symmetrical member 8 rotate.Described fixed angle comprises 30 degree, 45 degree, 60 degree, 90 degree, 120 degree, 135 degree and 150 degree.

Because antenna can, in the process of installation and removal, can carry out opening and closing up by the present invention.The problem that angle recalculates can be produced.And when have employed the mode arranging fixed angle keeper in rotating shaft, quick alignment can be carried out to conventional angle, easy to use and reliable.

One end that described bracing or strutting arrangement 5 connects active vertical polarized antenna 3 is provided with antenna fixing seat 19.

Described support arm rotation seat 7 and support arm rotation seat symmetrical member 8 are provided with rotation backing pin 20.

As shown in Figure 6, described vector synthesizer 21 comprises two SP3T switches, three hilted broadsword six throw switches, 0 degree of power combiner, 90 degree of power combiners, 180 degree of power combiners and 270 degree of power combiners, the input of the first SP3T switch receives the radiofrequency signal from the active vertical poliarizing antenna 3 being arranged on support arm holder 6, the output of the first SP3T switch is connected with the first hilted broadsword six throw switch, and five outputs of the first hilted broadsword six throw switch are connected with the first input end of the first input end of the first input end of the first input end of 0 degree of power combiner, 90 degree of power combiners, 180 degree of power combiners, the first input end of 270 degree of power combiners and the 3rd hilted broadsword six throw switch respectively, the first input end of the second SP3T switch and the second input receive from being arranged on the active vertical poliarizing antenna 3 of support arm rotation seat 7 and being arranged on the active vertical poliarizing antenna 3 of support arm rotation seat symmetrical member 8 respectively, the output of the second SP3T switch is connected with the input of the second hilted broadsword six throw switch, wherein four outputs of the second hilted broadsword six throw switch respectively with the second input of 0 degree of power combiner, second input of 90 degree of power combiners, second input of 180 degree of power combiners is connected with the second input of 270 degree of power combiners, 5th output of the second hilted broadsword six throw switch passes through grounding through resistance, the output of 0 degree of power combiner, 90 degree of power combiners, 180 degree of power combiners and 270 degree of power combiners is connected with the second input of the 3rd hilted broadsword six throw switch, the 3rd input, four-input terminal and the 5th input respectively, and the radiofrequency signal after the output output vector synthesis of the 3rd hilted broadsword six throw switch is to data-interface 13.

0 degree of described power combiner, 90 degree of power combiners, 180 degree of power combiners and 270 degree of power combiners include a phase shifter and a synthesizer, the input of phase shifter receives the signal from the first hilted broadsword six throw switch and the second hilted broadsword six throw switch respectively, two outputs of phase shifter are connected with synthesizer, and the output of synthesizer is connected with the 3rd hilted broadsword six throw switch.

Described vector synthesizer 21 also comprises a control inputs port, described control inputs port accepts outside Transistor-Transistor Logic level signal, controlling figure place is 4, wherein 1 for controlling to be arranged on the active vertical poliarizing antenna 3 of support arm rotation seat 7 and being arranged on the switching of active vertical poliarizing antenna 3 of support arm rotation seat symmetrical member 8, other 3 for controlling the phase place of phase shifter.

Fig. 7 is the schematic diagram of interferometer antenna battle array, in figure, " 1 " number antenna represents the antenna be arranged on support arm holder 6, in figure, " 2 " number antenna represents the antenna be arranged on support arm rotation seat 7, and in figure, " 3 " number antenna represents the antenna be arranged on support arm rotation seat symmetrical member 8.

When arrival bearing is θ, it is different that signal arrives 3 antenna times, and therefore can obtain two wave path-differences, be Φ 12 and Φ 13 respectively.

When the elevation angle of incoming wave signal is 0 °, wave path-difference is as follows

${\mathrm{\Φ}}_{12}=b\sin \mathrm{\θ}=\frac{2\mathrm{\π}b}{\mathrm{\λ}}sin\mathrm{\θ};---\left(1\right)$

${\mathrm{\Φ}}_{13}=bcos\mathrm{\θ}=\frac{2\mathrm{\π}b}{\mathrm{\λ}}cos\mathrm{\θ};---\left(2\right)$

Can be obtained by formula (1) and formula (2)

tanθ＝Φ12/Φ13；(3)

Arrival bearing can be obtained by formula (3)

θ＝arctan(Φ12/Φ13)。

When the elevation angle of arrival bearing is β, wave path-difference is as follows

${\mathrm{\Φ}}_{12}=bsin\mathrm{\θ}cos\mathrm{\β}=\frac{2\mathrm{\π}b}{\mathrm{\λ}}sin\mathrm{\θ}cos\mathrm{\β};---\left(4\right)$

${\mathrm{\Φ}}_{13}=bcos\mathrm{\θ}cos\mathrm{\β}=\frac{2\mathrm{\π}b}{\mathrm{\λ}}cos\mathrm{\θ}cos\mathrm{\β};---\left(5\right)$

Can be obtained by formula (4) and formula (5)

tanθ＝Φ12/Φ13；(6)

Arrival bearing can be obtained by formula (6) tangent of negating

θ＝arctan(Φ12/Φ13)；

Can also be obtained by formula (4) and formula (5)

$cos\mathrm{\β}=\sqrt{\frac{{\mathrm{\Φ}}_{12}^2+{\mathrm{\Φ}}_{13}^2}{{\left(\frac{2\mathrm{\π}b}{\mathrm{\λ}}\right)}^2}};---\left(7\right)$

The incoming wave elevation angle can be obtained by formula (7) cosine of negating

$\mathrm{\β}={\cos }^{-1}\sqrt{\frac{{\mathrm{\Φ}}_{12}^2+{\mathrm{\Φ}}_{13}^2}{{\left(\frac{2\mathrm{\π}b}{\mathrm{\λ}}\right)}^2}}.$

Claims (10)

1. be provided with an interferometer antenna battle array for vector synthesizer, it is characterized in that: it comprises antenna array part (1) and upright part (2), described antenna array part (1) comprises the bracing or strutting arrangement (5) of holder (4) and active vertical poliarizing antenna (3) in the middle of holder (4), three connection antennas in the middle of three active vertical poliarizing antennas (3), an antenna, in the middle of described antenna, holder (4) comprises a support arm holder (6), support arm rotation seat (7), a support arm rotation seat symmetrical member (8) and a vertical rod base (9), described support arm rotation seat (7) and support arm rotation seat symmetrical member (8) drive bracing or strutting arrangement (5) and active vertical poliarizing antenna (3) to horizontally rotate by rotating shaft (10), are fixed by locking device, be arranged on support arm rotation seat (7) respectively identical with bracing or strutting arrangement (5) length of two active vertical poliarizing antennas of support arm rotation seat symmetrical member (8), the active vertical poliarizing antenna (3) being arranged on support arm holder (6) is less than λ/2 with the horizontal linear distance of the active vertical poliarizing antenna (3) being arranged on support arm rotation seat (7), and wherein λ/2 are the half-wavelength of maximum operating frequency, described upright part (2) comprises vertical rod (11), be arranged at the vector synthesizer (21) in vertical rod (11) stage casing, be arranged at the radio frequency cable that vertical rod (11) is inner, one end of described vertical rod (11) connects aerial plug (12) and vertical rod base (9) by the tight lock tube of the first antenna (14), the other end of vertical rod (11) is by the second antenna tight lock tube (15) connection data interface (13), described vector synthesizer (21) carries out Vector modulation for the radiofrequency signal three active vertical poliarizing antennas (3) received, and the radiofrequency signal after synthesis is sent to outside direction-finding equipment by radio frequency cable and data-interface (13).

2. a kind of interferometer antenna battle array being provided with vector synthesizer according to claim 1, is characterized in that: also comprise main holder (16), and described main holder (16) is by the second antenna tight lock tube (15) protected data interface (13).

3. a kind of interferometer antenna battle array being provided with vector synthesizer according to claim 1, is characterized in that: described locking device comprises rotating nut (17) and rotating nut cover (18).

4. a kind of interferometer antenna battle array being provided with vector synthesizer according to claim 1, it is characterized in that: described rotating shaft (10) is provided with multiple with support arm holder (6) keeper in fixed angle, for carrying out angle Selection when support arm rotation seat (7) and support arm rotation seat symmetrical member (8) rotate.

5. a kind of interferometer antenna battle array being provided with vector synthesizer according to claim 4, is characterized in that: described fixed angle comprises 30 degree, 45 degree, 60 degree, 90 degree, 120 degree, 135 degree and 150 degree.

6. a kind of interferometer antenna battle array being provided with vector synthesizer according to claim 1, is characterized in that: one end that described bracing or strutting arrangement (5) connects active vertical polarized antenna (3) is provided with antenna fixing seat (19).

7. a kind of interferometer antenna battle array being provided with vector synthesizer according to claim 1, is characterized in that: described support arm rotation seat (7) and support arm rotation seat symmetrical member (8) are provided with rotation backing pin (20).

8. a kind of interferometer antenna battle array being provided with vector synthesizer according to claim 1, is characterized in that: described vector synthesizer (21) comprises two SP3T switches, three hilted broadsword six throw switches, 0 degree of power combiner, 90 degree of power combiners, 180 degree of power combiners and 270 degree of power combiners, the input of the first SP3T switch receives the radiofrequency signal from the active vertical poliarizing antenna (3) being arranged on support arm holder (6), the output of the first SP3T switch is connected with the first hilted broadsword six throw switch, and five outputs of the first hilted broadsword six throw switch are connected with the first input end of the first input end of the first input end of the first input end of 0 degree of power combiner, 90 degree of power combiners, 180 degree of power combiners, the first input end of 270 degree of power combiners and the 3rd hilted broadsword six throw switch respectively, the first input end of the second SP3T switch and the second input receive from being arranged on the active vertical poliarizing antenna (3) of support arm rotation seat (7) and being arranged on the active vertical poliarizing antenna (3) of support arm rotation seat symmetrical member (8) respectively, the output of the second SP3T switch is connected with the input of the second hilted broadsword six throw switch, wherein four outputs of the second hilted broadsword six throw switch respectively with the second input of 0 degree of power combiner, second input of 90 degree of power combiners, second input of 180 degree of power combiners is connected with the second input of 270 degree of power combiners, 5th output of the second hilted broadsword six throw switch passes through grounding through resistance, the output of 0 degree of power combiner, 90 degree of power combiners, 180 degree of power combiners and 270 degree of power combiners is connected with the second input of the 3rd hilted broadsword six throw switch, the 3rd input, four-input terminal and the 5th input respectively, and the radiofrequency signal after the output output vector synthesis of the 3rd hilted broadsword six throw switch is to data-interface (13).

9. a kind of interferometer antenna battle array being provided with vector synthesizer according to claim 8, it is characterized in that: 0 degree of described power combiner, 90 degree of power combiners, 180 degree of power combiners and 270 degree of power combiners include a phase shifter and a synthesizer, the input of phase shifter receives the signal from the first hilted broadsword six throw switch and the second hilted broadsword six throw switch respectively, two outputs of phase shifter are connected with synthesizer, and the output of synthesizer is connected with the 3rd hilted broadsword six throw switch.

10. a kind of interferometer antenna battle array being provided with vector synthesizer according to claim 9, it is characterized in that: described vector synthesizer (21) also comprises a control inputs port, described control inputs port accepts outside Transistor-Transistor Logic level signal, be arranged on the active vertical poliarizing antenna (3) of support arm rotation seat (7) for controlling and be arranged on the switching of active vertical poliarizing antenna (3) of support arm rotation seat symmetrical member (8), and for controlling the phase place of phase shifter.