CN105319449A - Antenna near-field measurement method based on unmanned plane - Google Patents
Antenna near-field measurement method based on unmanned plane Download PDFInfo
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Abstract
Provided is an antenna near-field measurement method based on an unmanned plane, which collects the space coordinate information of an unmanned plane with a beacon, and signal information from the beacon received by an antenna to be measured, thereby establishing the relation between the receiving pose of the antenna to be measured and a signal source space position, and realizing near-field measurement. The antenna near-field measurement method is specific to near-field measurement, has the advantages of simple operation, high cost performance, wide adaptability and high test precision, and is especially suitable for large-scale antenna measurement.
Description
Technical field
What the present invention relates to is the technology in the holographic field of a kind of radio, a kind of specifically antenna damnification method based on unmanned plane.
Background technology
Antenna damnification is the important component part of radio holography.Can Near-far fields transfer be utilized on the one hand by near field measurement, obtain the far field observation performance of antenna.On the other hand, by the conversion between the aperture field of near field, the diagnosis to antenna aperture facial disfigurement can be realized.
The common method of current antenna damnification is placing beacon apart from antenna certain distance to be measured, scanned, thus realize the near field measurement of antenna by the pitching and orientation adjusting antenna to be measured to beacon.But the position being limited to beacon due to this method is fixed, the Near-field Data of antenna under each pitching can not be measured, special in large-scale radio telescope, under different pitching, the distortion of primary reflection surface can have bigger difference due to gravity deformation, therefore be necessary to develop a kind of new near-field measurement technique, to adapt to the near field measurement of antenna under different pitching.
Summary of the invention
The present invention is directed to prior art above shortcomings, propose a kind of antenna damnification method based on unmanned plane, near field measurement, have simple to operate, cost performance is high, is particularly useful for the measurement of large-scale antenna, there is wide adaptability, the advantage that measuring accuracy is high.
The present invention is achieved by the following technical solutions:
The present invention by gathering the signal message from beacon received with spatial coordinated information and the antenna to be measured of the unmanned plane of beacon, thus sets up the reception pose of antenna to be measured and associating between signal source locus, realizes near field measurement.
The present invention specifically comprises the following steps:
Step 1: under antenna to be measured is fixed on a certain orientation and pitch attitude, by unmanned plane carrying beacon and positioning equipment, control unmanned plane to fly near antenna direction, the bootstrap information determination unmanned plane obtained by antenna to be measured is positioned at the moment of antenna direction, and by the volume coordinate that track following equipment is determined now, as the scanning center of unmanned plane.
Step 2: the scanning center's coordinate determined according to step 1 repetitive measurement, calculates the spacescan Grid Track around central point, and control unmanned plane and repeatedly fly around rail.
Step 3: utilize that track optimizing algorithm realization is high-precision to fly around rail, the real-time correction to unmanned plane during flying track and flight attitude is realized by track following equipment and posture detection device, the Near-field Data obtained in conjunction with antenna to be measured realizes carrying out multiple finishing to unmanned plane track and Near-field Data, thus realizes the near field measurement of antenna.
Technique effect
Compared with prior art, the present invention utilizes unmanned plane to carry beacon, under the different pitching of antenna to be measured, doing orbit determination flight, realizing the relative scanning to beacon of antenna to be measured by controlling unmanned plane around antenna direction to be measured.
The present invention by unmanned plane track optimizing algorithm, controls unmanned plane during flying path accuracy, utilizes unmanned plane track and localization equipment, realizes the real-time correction of unmanned plane trajectory coordinates and accurately obtains.
The present invention realizes repeatedly flying scanning by utilizing unmanned plane under same pitching, by feature extraction and interpolation algorithm, realizes the multiple correction of track while scan coordinate and corresponding Near-field Data.
The present invention has the following advantages: by UAV flight's beacon, can adapt to the near field measurement of most antenna under different pitching; Unmanned plane building compared to beacon tower, has cost performance high, the advantage of wide adaptability; Utilize unmanned plane to carry out track scanning Billy to scan with antenna to be measured, the error that the antenna movement that causes due to antenna processing and manufacturing error produces can be reduced; Utilize unmanned plane track optimizing algorithm, unmanned plane positioning equipment and repeat track scanning, realizing the multiple correction of unmanned plane location and test data.This invention has convenient test, wide accommodation, the advantage that cost performance is high.
Accompanying drawing explanation
Fig. 1 is embodiment schematic diagram.
Embodiment
As shown in Figure 1, the present embodiment comprises following operation steps:
Step 1: under antenna to be measured is fixed on detection orientation and pitch attitude, by unmanned plane carrying beacon and positioning equipment, control unmanned plane to fly near antenna direction to be measured in antenna near-field region, the bootstrap information determination unmanned plane obtained by antenna to be measured is positioned at the moment of antenna direction, and pass through the volume coordinate in laser range finder track following equipment determination unmanned plane corresponding moment, using this volume coordinate as the scanning center of unmanned plane.
Described antenna to be measured adopts but is not limited to parabola antenna.
Described beacon adopts but is not limited to wireless signal transmitter.
Described flight, specifically refers to that the spacing of unmanned plane and antenna to be measured is near field range.
Step 2: repeated execution of steps 1 to determine scanning center, and optimizes the spacescan track of unmanned plane around scanning center.
Step 3: utilize track optimizing algorithm to control unmanned plane and realize accurately flying around rail, the real-time correction to unmanned plane during flying track and flight attitude is realized by laser orientation instru-ment and gyroscope, the Near-field Data obtained in conjunction with antenna to be measured realizes carrying out multiple correction to unmanned plane track and Near-field Data, thus realizes the near field measurement of antenna.
Described track optimizing algorithm adopts but is not limited to particle cluster algorithm.
Described real-time correction specifically refers to: to the adjustment of unmanned plane during flying track and flight attitude
Described finishing specifically refers to: because measurement data is discrete point, can carry out interpolation and optimization process, to reduce measuring error during data processing, and this adjustment, in conjunction with unmanned plane track, the data of near field measurement data two aspect, are therefore called multiple correction.
Above-mentioned concrete enforcement can carry out local directed complete set to it by those skilled in the art in a different manner under the prerequisite not deviating from the principle of the invention and aim; protection scope of the present invention is as the criterion with claims and can't help above-mentioned concrete enforcement and limit, and each implementation within the scope of it is all by the constraint of the present invention.
Claims (6)
1. the antenna damnification method based on unmanned plane, it is characterized in that, by gathering the signal message from beacon received with spatial coordinated information and the antenna to be measured of the unmanned plane of beacon, thus set up the reception pose of antenna to be measured and associating between signal source locus, realize near field measurement.
2. method according to claim 1, is characterized in that, specifically comprises the following steps:
Step 1: under antenna to be measured is fixed on a certain orientation and pitch attitude, by unmanned plane carrying beacon and positioning equipment, control unmanned plane to fly near antenna direction, the bootstrap information determination unmanned plane obtained by antenna to be measured is positioned at the moment of antenna direction, and by the volume coordinate that track following equipment is determined now, as the scanning center of unmanned plane;
Step 2: the scanning center's coordinate determined according to step 1 repetitive measurement, calculates the spacescan Grid Track around central point, and control unmanned plane and repeatedly fly around rail;
Step 3: utilize that track optimizing algorithm realization is high-precision to fly around rail, the real-time correction to unmanned plane during flying track and flight attitude is realized by track following equipment and posture detection device, the Near-field Data obtained in conjunction with antenna to be measured realizes carrying out multiple correction to unmanned plane track and Near-field Data, thus realizes the near field measurement of antenna.
3. method according to claim 1 and 2, is characterized in that, described antenna to be measured is parabola antenna.
4. method according to claim 1 and 2, is characterized in that, described beacon is wireless signal transmitter.
5. method according to claim 1 and 2, is characterized in that, described track optimizing algorithm adopts particle cluster algorithm.
6. method according to claim 1 and 2, is characterized in that, described real-time correction specifically refers to: to the adjustment of unmanned plane during flying track and flight attitude.
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| CN105636103A (en) * | 2016-02-15 | 2016-06-01 | 上海应用技术学院 | Novel wireless communication field intensity simulation test method |
| CN107085150A (en) * | 2017-04-20 | 2017-08-22 | 中国人民解放军海军工程大学 | A kind of short wavelength emissions antenna 3 D stereo directional diagram aerial mobile measuring system and method |
| CN107543979A (en) * | 2016-06-24 | 2018-01-05 | 中兴通讯股份有限公司 | A kind of antenna parameter measuring method and device |
| CN107607797A (en) * | 2017-09-19 | 2018-01-19 | 山东大学 | Measurement of antenna performance and device based on unmanned plane |
| CN107632208A (en) * | 2017-08-09 | 2018-01-26 | 西安电子科技大学 | A kind of sphere near field antenna measurements method and system |
| CN107806854A (en) * | 2017-09-30 | 2018-03-16 | 杭州艾航科技有限公司 | A kind of plate aerial angle measurement method taken pictures based on unmanned plane with GPS information |
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| CN109061322A (en) * | 2018-06-15 | 2018-12-21 | 西安电子科技大学 | A kind of Far-Field antennas measurement system method based on unmanned plane |
| CN109597094A (en) * | 2018-10-26 | 2019-04-09 | 上海神添实业有限公司 | The complete polarization near-field scan method and system of general purpose vehicle based on unmanned plane |
| CN110582704A (en) * | 2017-03-03 | 2019-12-17 | 奥维耶多大学 | airborne system and method for characterization and measurement of antenna or radiation system |
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| CN110869777A (en) * | 2018-12-28 | 2020-03-06 | 深圳市大疆创新科技有限公司 | Antenna testing method and device based on mobile platform and information processing equipment |
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| CN105636103A (en) * | 2016-02-15 | 2016-06-01 | 上海应用技术学院 | Novel wireless communication field intensity simulation test method |
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| CN107543979B (en) * | 2016-06-24 | 2021-07-30 | 中兴通讯股份有限公司 | Antenna parameter measuring method and device |
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