CN204144451U - Array antenna near field calibration device - Google Patents
Array antenna near field calibration device Download PDFInfo
- Publication number
- CN204144451U CN204144451U CN201420577071.3U CN201420577071U CN204144451U CN 204144451 U CN204144451 U CN 204144451U CN 201420577071 U CN201420577071 U CN 201420577071U CN 204144451 U CN204144451 U CN 204144451U
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- CN
- China
- Prior art keywords
- array antenna
- phase
- shift network
- merit
- near field
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Abstract
The utility model relates to a kind of array antenna near field calibration device, belongs to space telemetry and control technology field.It comprises signal source (1), merit divides phase-shift network (2) and array antenna support (4), described array antenna support (4) is provided with 9 single horn antennas (3), described 9 single horn antennas (3) are arranged in 3*3 rectangular array, described signal source (1) output divides phase-shift network (2) input to be connected by radio frequency cable and merit, and described merit divides phase-shift network (2) output to be connected with 9 single horn antennas (3) respectively.The utility model well solves the far field angle calibration problem of each frequency range TT&C antenna, distance particularly along with survey of deep space is more and more far away, frequency is more and more higher, far field calibration distance will reach tens kilometers, substantially cannot realize, the utility model can provide good far field calibration condition for the Spacecraft TT&C task of each frequency range.
Description
Technical field
The utility model relates to a kind of array antenna near field calibration device, belongs to space telemetry and control technology field.
Background technology
The change that TT&C system and difference follow the tracks of link phase difference and difference slope will cause TT&C system tracking performance to worsen, and therefore need to carry out Angle Calibration to it.Namely Angle Calibration utilizes beacon to detect and follows the tracks of link phase difference and difference slope with difference under microwave unification measurement and control system far field condition, guarantees the tracking performance that system is good.
The widely used Calibration Method of microwave current unified TT&C system has following several: discharge beacon ball light with adding inclined method, wired microwave self checking method and far field to tower beacon calibration method etc., wherein far field is method the most accurately to tower Angle Calibration, is the benchmark of other Calibration Methods.Calibration eaily can go out cross-couplings and the directional sensitivity of tracking system to tower beacon calibration method under far field condition, all devices impact comprising feed system can be reflected.
But along with developing rapidly of aerospace industry, more and more far away to the distance of survey of deep space, require also more and more higher to antenna gain, aperture is increasing, and frequency is more and more higher, and to carry out Angle Calibration to tower before task be must through program, unavoidably.In order to meet far field condition, the distance needed for calibration test reaches dozens or even hundreds of kilometer, also can bring the problems such as " multipath " effect interference simultaneously, cannot realize in practice.In order to solve far field that high frequency points task brings to the difficult problem of tower Angle Calibration, the utility model proposes the problem that a kind of device utilizing array antenna to synthesize quasi-plane wave solves the calibration of high band TT&C system antenna near-field, by adjusting amplitude and the phase place of horn antenna unit, produce requirement with the quasi-plane wave reaching the different elevation angle.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, provides a kind of array antenna near field calibration device, it solves the tower of existing calibration tower apart from the problem that cannot meet the calibration of high frequency points far field angle.
The purpose of this utility model is achieved in that a kind of array antenna near field calibration device, it comprises signal source, merit divides phase-shift network and array antenna support, described array antenna support is provided with 9 single horn antennas, described 9 single horn antennas are that 3*3 rectangular array is arranged, described signal source output divides phase-shift network input to be connected by radio frequency cable and merit, and described merit divides phase-shift network output to be connected with 9 single horn antennas respectively.
Described array antenna timbering material adopts aluminum alloy to form.
Described merit divides phase-shift network to have 1 input, and maximum 16 tunnels export.
Merit divides the switch of phase-shift network to divide phase control switch and gain control switch, altogether upper and lower 2 rows; 1st row 24 is phase control switch, forms four group of 2 system phase control code, and often organize control 4 horn antennas, phase control precision is: 360/64=5.6 degree; 2nd row 24 is amplitude control switch, forms four group of 2 system amplitude control code, each control precision 0.5 dB, amplitude control range 32dB.
Compared with prior art, the utility model has following beneficial effect:
1, the utility model is under Near Field, by erection array antenna synthesis quasi-plane wave, solves the problem of high band Antenna Far Field Angle Calibration;
2, the utility model is without the need to the frame mark again in farther place, and it is loaded down with trivial details that the personnel of eliminating come and go, and also well avoids because distance and calibration position height causes lower " multipath " effect interference brought of antenna elevation angle not simultaneously;
3, the utility model changes electromagnetic form on tower, and cambered surface ripple is become quasi-plane wave, and calibration result and measuring and controlling equipment self have nothing to do, and comprehensively can reflect the tracking performance of measuring and controlling equipment; When coordinating without the need to other targets, the data relationship curve of high band Antenna Far Field calibration is obtained by data fitting method, achieve the far field angle calibration under different mode, different frequent points, different link, different polarization mode and different external environment condition, be adapted to the unified TT&C system calibration work of current various pattern;
4, the utility model is applicable to the antenna of different frequent points, there is extremely strong expansibility, the amplitude of dividing phase-shift network to regulate array antenna each single audible warning by merit and phase place, make this device not be only applicable to the contour band antenna of C, X, and the antenna for more high band is also suitable for.Adopt the utility model, near field tower can well be solved apart from the far field in Spacecraft TT&C task set-up procedure under condition to tower beacon school problem, particularly can solve current TT&C task various, before task after the large and unknown frequency of Calibration Data amount, unknown TT & C, trouble hunting, under emergent observing and controlling demand, re-start the problem of calibration, can be better high density, multimodal Spacecraft TT&C task serves.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of array antenna near field of the utility model calibration device.
Wherein:
Signal source 1
Merit divides phase-shift network 2
Single horn antenna 3
Array antenna support 4.
Embodiment
See Fig. 1, a kind of array antenna near field of the utility model calibration device, it comprises signal source 1, merit divides phase-shift network 2 and array antenna support 4, described array antenna support 4 is provided with 9 single horn antennas 3, described 9 single horn antennas 3 are arranged in 3*3 rectangular array, described signal source 1 output divides phase-shift network 2 input to be connected by radio frequency cable and merit, described merit divide phase-shift network 2 output respectively horn antenna 3 single with 9 be connected.
Described array antenna support 4 material adopts aluminum alloy to form, and has the features such as antirust, good stress performance, Stability Analysis of Structures, ensure that horn antenna install after position stable.
Described merit divides phase-shift network 2 to have 1 input, and maximum 16 tunnels export.Merit divides the switch of phase-shift network 2 to divide phase control switch and gain control switch, altogether upper and lower 2 rows.1st row 24 is phase control switch, and form four groups of (often organizing six control codes, totally 64 kinds of states) 2 system phase control codes, often organize control 4 horn antennas, phase control precision is: 360/64=5.6 degree; 2nd row 24 is amplitude control switch, forms four groups of (often organizing six control codes, totally 64 kinds of states) 2 system amplitude control codes, each control precision 0.5 dB, amplitude control range 32dB.
This device operation principle comprises the following steps:
Step 1, array antenna support installing and signal connect
Calibration tower under distance of near field condition is installed array antenna support, 9 single horn antennas, signal source and merits divide phase-shift network, use radio frequency cable that signal source output signal is connected to merit and divide phase-shift network input port, 9 single horn antennas are connected respectively after merit divides phase-shift network to export, array antenna support, 9 single horn antennas, signal source and merits divide phase-shift network to form the array antenna of 3*3, externally can send electromagnetic signal.
Step 2, merit divide phase-shift network parameter acquiring
2.1, signal source start, arrange corresponding frequency and in strong level signal;
2.2, TT&C system device power-up, array antenna on TT&C system antenna alignment calibration tower; Alignment so is: TT&C system antenna is aimed at when making servo AGC voltage maximum by rotary antenna after receiving the signal that on calibration tower, array antenna is launched; Receive the electromagnetic signal of array antenna radiation on tower, TT&C antenna feed system motivates sum and difference signals and send track receiver, delivers to MAC main frame after process;
2.3, adjust amplitude, phase control switch that merit divides phase-shift network, the maximum output of this network is 16 tunnels, and each road amplitude, phase place can divide phase-shift network adjustment by merit, arranges first arbitrarily an on off state as initial condition;
2.4, after setting completed, post personnel carry out bracing wire test (cross-couplings and directional sensitivity test) to orientation and pitching respectively, record simultaneously current amplitude, phaseswitch state is set
,
with range of linearity size
;
2.5, the switch that merit to divide on phase-shift network four groups of amplitudes, phase place is switched, be set to another kind of state, repeat step 2.4, until when linearly testing, the linear size of orientation, pitching meets measuring and controlling equipment under far field condition substantially to tower range of linearity size, obtains the on off state that merit divides phase-shift network amplitude, phase place
,
.
Step 3, with the array antenna adjusted to measuring and controlling equipment follow the tracks of link carry out Angle Calibration
3.1, on tower, merit divides phase-shift network, signal source to start shooting, and signal source, TT&C system arrange task object frequency respectively, and TT&C antenna aims at calibration tower, and on tower, array antenna sends measuring and controlling equipment downstream signal;
3.2, TT&C antenna motivates sum and difference signals through feed system after receiving and send track receiver, and track receiver uses automatic school phase function to draw system under tower environment and difference phase difference between channels
and difference slope
;
3.3, change the frequency of signal source, the frequency of change TT&C system, repeats step 3.1 ~ 3.2, obtain under different frequent points to tower phase data
and difference slope data
; With TT&C system frequency be abscissa, to tower phase data
for ordinate fit phase difference reference data relation curve; With TT&C system frequency be abscissa, difference slope data
for ordinate matching difference slope reference data relation curve.
The array antenna that the utility model does now only employs the antenna array of 3*3, and can meet the near field calibration of current high band antenna, measured data is better.By increasing single loudspeaker number of antenna array, expanding antenna array, better near field calibration effect can be obtained, be also applicable to the near field calibration of more high band TT&C system antenna.The merit of the utility model design divides phase-shift network the maximum antenna array meeting 4*4 16 single loudspeaker, and next step is according to calibration needs, can expand merit and divide the port number of phase-shift network to realize the near field calibration of each frequency range TT&C antenna.
Claims (4)
1. an array antenna near field calibration device, it is characterized in that: it comprises signal source (1), merit divides phase-shift network (2) and array antenna support (4), described array antenna support (4) is provided with 9 single horn antennas (3), described 9 single horn antennas (3) are arranged in 3*3 rectangular array, described signal source (1) output divides phase-shift network (2) input to be connected by radio frequency cable and merit, and described merit divides phase-shift network (2) output to be connected with 9 single horn antennas (3) respectively.
2. a kind of array antenna near field according to claim 1 calibration device, is characterized in that: described array antenna support (4) material adopts aluminum alloy to form.
3. a kind of array antenna near field according to claim 1 and 2 calibration device, is characterized in that: described merit divides phase-shift network (2) to have 1 input, and maximum 16 tunnels export.
4. a kind of array antenna near field according to claim 1 and 2 calibration device, is characterized in that: merit divides the switch of phase-shift network (2) to divide phase control switch and gain control switch, altogether upper and lower 2 rows; 1st row 24 is phase control switch, forms four group of 2 system phase control code, and often organize control 4 horn antennas, phase control precision is: 360/64=5.6 degree; 2nd row 24 is amplitude control switch, forms four group of 2 system amplitude control code, each control precision 0.5 dB, amplitude control range 32dB.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420577071.3U CN204144451U (en) | 2014-10-08 | 2014-10-08 | Array antenna near field calibration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420577071.3U CN204144451U (en) | 2014-10-08 | 2014-10-08 | Array antenna near field calibration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204144451U true CN204144451U (en) | 2015-02-04 |
Family
ID=52421117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420577071.3U Expired - Fee Related CN204144451U (en) | 2014-10-08 | 2014-10-08 | Array antenna near field calibration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204144451U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020107362A1 (en) * | 2018-11-30 | 2020-06-04 | 北京航空航天大学 | Quasi-plane wave generator based on array antenna |
| CN113311383A (en) * | 2021-04-30 | 2021-08-27 | 中国人民解放军63892部队 | Antenna direction finding and polarization parameter joint estimation method based on rectangular array |
-
2014
- 2014-10-08 CN CN201420577071.3U patent/CN204144451U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020107362A1 (en) * | 2018-11-30 | 2020-06-04 | 北京航空航天大学 | Quasi-plane wave generator based on array antenna |
| CN113311383A (en) * | 2021-04-30 | 2021-08-27 | 中国人民解放军63892部队 | Antenna direction finding and polarization parameter joint estimation method based on rectangular array |
| CN113311383B (en) * | 2021-04-30 | 2023-12-29 | 中国人民解放军63892部队 | Antenna direction finding and polarization parameter joint estimation method based on rectangular array |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150204 Termination date: 20151008 |
|
| EXPY | Termination of patent right or utility model |