CN201837717U - Vertical ground feature positioning error correcting system based on InSAR (interferometric synthetic aperture radar) images - Google Patents
Vertical ground feature positioning error correcting system based on InSAR (interferometric synthetic aperture radar) images Download PDFInfo
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- CN201837717U CN201837717U CN2010205804567U CN201020580456U CN201837717U CN 201837717 U CN201837717 U CN 201837717U CN 2010205804567 U CN2010205804567 U CN 2010205804567U CN 201020580456 U CN201020580456 U CN 201020580456U CN 201837717 U CN201837717 U CN 201837717U
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Abstract
The utility model discloses a vertical ground feature positioning error correcting system based on InSAR (interferometric synthetic aperture radar) images, which comprises a data inputting device, a data processor, an offset calculating module, an error correcting module and a display unit. The data inputting device is used for inputting actual measuring data and height data delta h, which are measured by an onboard InSAR system, of vertical ground features required to be acquired, the data processor analyzes the actual measuring data of the vertical ground features and automatically retrieves and records actually measured position coordinate data of the tops of the vertical ground features, the offset calculating module calculates top plane offset delta r of the vertical ground features due to height according to the height data delta h and an incidence angle eta during actual measurement of the onboard InSAR system, the error correcting module corrects the top actually measured position coordinate data of the vertical ground features according to the obtained top plane offset delta r, and the display unit is connected with the data processor. The vertical ground feature positioning error correcting system is reasonable in design, simple and convenient in operation, fine in use effect and high in practical value, and can resolve the problem of positioning errors of the vertical ground features on an existing single-chip InSAR image due to ground feature height.
Description
Technical field
The utility model belongs to the radar interference field of measuring technique, especially relates to a kind of vertical atural object positioning error correcting system based on I nSAR image.
Background technology
InSAR (Interferometric Synthetic Aperture Radar; Be called for short: the interferometer radar measurement) technology comes from the U.S., obtains constantly improving with ripe in American-European developed country, and its application is also constantly promoted.Country for the prosperity of InSAR technology, spatial information industrial technology company as the U.S. and Germany, with the Airborne High-resolution InSAR technology of practicability as a kind of new, advanced technological means, be used for topographic mapping, forest surveying, resource exploration and aspects such as environment drawing, geologic media and disaster monitoring, and along with the fast development of this technology, new application is also progressively being widened.
Radar interference is measured (InSAR) technology, and through the research of recent two decades, its theory is ripe day by day, in the actual use, the radar interference measurement has the following advantages: the first, do not rely on sunshine, but utilizes the electromagnetic wave of self emission to measure, and therefore can round-the-clock work; The second, except piercing the clouds and mist, also be not subjected to the influence of weather conditions, therefore can all weather operations; Three, radar interference is measured the elevation information that can directly obtain landform.Thereby nowadays radar interference measurement (InSAR) The Application of Technology field is also constantly promoted.Many American-European countries with the Airborne High-resolution InSAR technology of practicability as a kind of new, advanced technological means, be used for topographic mapping, forest surveying, resource exploration and aspects such as environment drawing, geologic media and disaster monitoring, and China has also carried out Airborne High-resolution InSAR technology in recent years, the applied research aspect topographic mapping.
But during actual the measurement, radar interference is measured (InSAR) technology and is also come with some shortcomings, in conjunction with Fig. 1, because the special side-looking imaging mechanism of monolithic InSAR image, for the vertical atural object that exceeds the face of land, then produce top end offset phenomena, be that radar beam is short to the time of bottom B to the time ratio of top A, thereby top image a is recorded earlier, be recorded behind the image b of bottom, therefore the position of top image a and bottom image b is not (to should be same point but actual conditions are orthogonal projection A and 2 of B) on same position in monolithic InSAR image, then in monolithic InSAR image, produced the positioning error of amount for Δ r (Δ r=Δ h/tan η wherein, Δ R=Δ h/cos η, η are the incident angle of airborne InSAR system), thereby when in the monolithic InSAR image vertical atural object being measured, there is positioning error.Secondly, because in monolithic InSAR image, the image at vertical atural object top often is not rendered as outstanding high bright spot because of blocking more, and the image of bottom is difficult for the location owing to blocking.Therefore,, can correct through error, reach the purpose of location, bottom by gathering its tip position based on the collection of the vertical atural object of monolithic InSAR image.
At present, the data acquisition system (DAS) that China adopts mainly is a digital photogrammetric measurement system, and this system mainly is adapted to the data acquisition of stereogram, is not suitable for the image collection based on monolithic InSAR, and also can't correct for the positioning error of vertical atural object.
The utility model content
Technical problem to be solved in the utility model is at above-mentioned deficiency of the prior art, a kind of vertical atural object positioning error correcting system based on the InSAR image is provided, it is reasonable in design, easy-to-connect, use is easy and simple to handle and result of use good, practical value is high, can effectively solve the vertical atural object positioning error problem that produces because of object height on the existing monolithic InSAR image.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of vertical atural object positioning error correcting system based on the InSAR image, it is characterized in that: comprise the measurement parameter that is used to import airborne InSAR system and need to gather the data input device of the altitude information Δ h of vertical atural object, the actual measurement data of the measured described vertical atural object of described airborne InSAR system is analyzed and is transferred automatically and writes down the data processor of the absolute fix coordinate data at described vertical atural object top, according to the incident angle η in altitude information Δ h and the described airborne InSAR systematic survey parameter and utilize formula Δ r=Δ h/tan η to calculate the side-play amount computing module of described vertical atural object because of the top plan offset r that highly causes, error correction module of the absolute fix coordinate data at described vertical atural object top being corrected according to the top plan offset r that calculates and the display unit that joins with data processor, described data input device, side-play amount computing module and error correction module are all joined with data processor.
Above-mentioned vertical atural object positioning error correcting system based on the InSAR image is characterized in that: also comprise the data storage cell that joins with data processor.
Above-mentioned vertical atural object positioning error correcting system based on the InSAR image, it is characterized in that: described data input device is supervisory keyboard or data interface unit.
Above-mentioned vertical atural object positioning error correcting system based on the InSAR image, it is characterized in that: described data interface unit is a USB interface.
The utility model compared with prior art has the following advantages:
1, reasonable in design, circuit connection is convenient and input cost is low.
2, realize conveniently, do not need existing InSAR data acquisition system (DAS) is done any change, only need the utility model is attached on the basis of existing InSAR data acquisition system (DAS), can realize the purpose that the vertical atural object positioning error in the monolithic InSAR image is accurately corrected.
3, use is easy and simple to handle, workload is few, in the actual mechanical process, the measurement parameter that only needs to import airborne InSAR system by data input device gets final product with needing the altitude information Δ h that gathers vertical atural object, data processor of the present utility model afterwards can call the side-play amount computing module automatically and the error correction module is carried out comprehensive analysis processing to the input data, and finishes the purpose that the positioning error of vertical atural object is corrected automatically.
4, result of use is good and practical value is high, measurement data after the correction is accurate, the positioning error that can be easy and corrects the vertical atural object that produces because of object height more exactly, it can effectively solve existing vertical atural object positioning error problem on the existing monolithic InSAR image.Thereby the utility model is when realizing fast, accurately collection has vertical height atural object ground coordinate, can effectively improve the mapping precision and the efficient of airborne InSAR system, realized the collection of the airborne InSAR monolithic InSAR of system image, can form the technical manual of gathering by the utility model, promote the business operation of InSAR technology based on monolithic InSAR image data.
In sum, the utility model is reasonable in design, easy-to-connect, use is easy and simple to handle and result of use good, practical value is high, can effectively solve the vertical atural object positioning error problem that produces because of object height on the existing monolithic InSAR image.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Description of drawings
Side-looking image-forming principle synoptic diagram when Fig. 1 carries out actual measurement for the airborne InSAR of employing system to vertical atural object.
Fig. 2 is a principle of work block diagram of the present utility model.
Description of reference numerals:
The 1-data input device; The 2-data processor; 3-side-play amount computing module;
The 4-display unit; 5-error correction module; The 6-data storage cell.
Embodiment
As shown in Figure 2, the utility model comprises the measurement parameter that is used to import airborne InSAR system and needs to gather the data input device 1 of the altitude information Δ h of vertical atural object, the actual measurement data of the measured described vertical atural object of described airborne InSAR system is analyzed and is transferred automatically and writes down the data processor 2 of the absolute fix coordinate data at described vertical atural object top, according to the incident angle η in altitude information Δ h and the described airborne InSAR systematic survey parameter and utilize formula Δ r=Δ h/tan η to calculate the side-play amount computing module 3 of described vertical atural object because of the top plan offset r that highly causes, error correction module 5 of the absolute fix coordinate data at described vertical atural object top being corrected according to the top plan offset r that calculates and the display unit 4 that joins with data processor 2, described data input device 1, side-play amount computing module 3 and error correction module 5 are all joined with data processor 2.
Simultaneously, the utility model also comprises the data storage cell 6 that joins with data processor 2.In the present embodiment, described data input device 1 is supervisory keyboard or data interface unit.In the actual use, described data interface unit is a USB interface, also can select the data interface unit of other type simultaneously for use.
In the actual use, only need by the airborne InSAR of data input device 1 input system measurement parameter (as to as described in the incident angle η of vertical atural object when measuring) and altitude information Δ h that need collection atural object, the position coordinates at the convenient described vertical atural object of the monolithic InSAR image collection top that obtains with described airborne InSAR systematic survey of data processor 2 afterwards, side-play amount computing module 3 utilizes formula Δ r=Δ h/tan η to calculate the top plan offset r of this vertical atural object because of highly causing simultaneously, error correction module 5 is corrected the position coordinates at this vertical atural object top according to the top plan offset r that calculates subsequently, and the position coordinates stores synchronized after will correcting is undertaken synchronously by the position coordinates after 4 pairs of correction of display unit to data storage cell 6 simultaneously, the directly perceived demonstration.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is imposed any restrictions; everyly any simple modification that above embodiment did, change and equivalent structure are changed, all still belong in the protection domain of technical solutions of the utility model according to the utility model technical spirit.
Claims (4)
1. vertical atural object positioning error correcting system based on the InSAR image, it is characterized in that: comprise the measurement parameter that is used to import airborne InSAR system and need to gather the data input device (1) of the altitude information Δ h of vertical atural object, the actual measurement data of the measured described vertical atural object of described airborne InSAR system is analyzed and is transferred automatically and writes down the data processor (2) of the absolute fix coordinate data at described vertical atural object top, according to the incident angle η in altitude information Δ h and the described airborne InSAR systematic survey parameter and utilize formula Δ r=Δ h/tan η to calculate the side-play amount computing module (3) of described vertical atural object because of the top plan offset r that highly causes, error correction module (5) of the absolute fix coordinate data at described vertical atural object top being corrected according to the top plan offset r that calculates and the display unit (4) that joins with data processor (2), described data input device (1), side-play amount computing module (3) and error correction module (5) are all joined with data processor (2).
2. according to the described vertical atural object positioning error correcting system of claim 1, it is characterized in that: also comprise the data storage cell (6) that joins with data processor (2) based on the InSAR image.
3. according to claim 1 or 2 described vertical atural object positioning error correcting systems based on the InSAR image, it is characterized in that: described data input device (1) is supervisory keyboard or data interface unit.
4. according to the described vertical atural object positioning error correcting system based on the InSAR image of claim 3, it is characterized in that: described data interface unit is a USB interface.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205804567U CN201837717U (en) | 2010-10-26 | 2010-10-26 | Vertical ground feature positioning error correcting system based on InSAR (interferometric synthetic aperture radar) images |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010205804567U CN201837717U (en) | 2010-10-26 | 2010-10-26 | Vertical ground feature positioning error correcting system based on InSAR (interferometric synthetic aperture radar) images |
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| CN201837717U true CN201837717U (en) | 2011-05-18 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102313537A (en) * | 2011-07-26 | 2012-01-11 | 中煤地航测遥感局有限公司 | Annotation method based on monolithic InSAR (interferometric synthetic aperture radar) orthophoto |
| CN102707284A (en) * | 2012-06-25 | 2012-10-03 | 西安煤航信息产业有限公司 | Ground control and measurement stationing method based on onboard interferometric synthetic aperture radar (InSAR) |
| CN109059849A (en) * | 2018-09-28 | 2018-12-21 | 中国科学院测量与地球物理研究所 | A kind of surface subsidence prediction technique based on InSAR technology in remote sensing |
-
2010
- 2010-10-26 CN CN2010205804567U patent/CN201837717U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102313537A (en) * | 2011-07-26 | 2012-01-11 | 中煤地航测遥感局有限公司 | Annotation method based on monolithic InSAR (interferometric synthetic aperture radar) orthophoto |
| CN102707284A (en) * | 2012-06-25 | 2012-10-03 | 西安煤航信息产业有限公司 | Ground control and measurement stationing method based on onboard interferometric synthetic aperture radar (InSAR) |
| CN102707284B (en) * | 2012-06-25 | 2014-03-26 | 西安煤航信息产业有限公司 | Ground control and measurement stationing method based on onboard interferometric synthetic aperture radar (InSAR) |
| CN109059849A (en) * | 2018-09-28 | 2018-12-21 | 中国科学院测量与地球物理研究所 | A kind of surface subsidence prediction technique based on InSAR technology in remote sensing |
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