CN101629998B - Omnibearing GPS multi-path signal testing device - Google Patents
Omnibearing GPS multi-path signal testing device Download PDFInfo
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- CN101629998B CN101629998B CN2009100113282A CN200910011328A CN101629998B CN 101629998 B CN101629998 B CN 101629998B CN 2009100113282 A CN2009100113282 A CN 2009100113282A CN 200910011328 A CN200910011328 A CN 200910011328A CN 101629998 B CN101629998 B CN 101629998B
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- reflecting plate
- fixed strip
- gps
- receiver antenna
- support bar
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Abstract
The invention discloses an omnibearing GPS multi-path signal test device, mainly comprising a fixture, a hanging ring, a shape memory alloy stranded wire, a baffle board, a baffle board fixed strip, a rolling shaft, a tightening device, a rotating wheel, a baffle board support rod, a connecting flange, a telescopic pole, a track, a GPS receiver antenna, a diameter suppressing board and an antenna support. The multi-path signal test device is characterized in that the upper end of the GPS receiver antenna support connected with one end of the track is connected with the diameter suppressing board and the receiver antenna; the upper end of the telescopic pole connected with the other end of the track is installed with the flange; the lower part of the baffle board support rod connected with the upper end of the flange is equipped with the turning wheel; the hanging ring which is arranged at the upper end of the support rod is connected with the rotating wheel by the shape memory alloy stranded wire; the disconnecting part of the baffle board support rod at the upper part of the rotating wheel is equipped with the tightening device and the rolling shaft, and the upper surface of the disconnecting part is equipped with the baffle board fixed strip. The invention has the effects and benefits of adjustable size of the baffle board, controllable height, controllable distance with the GPS antenna and controllable relative orientation with the GPS antenna.
Description
Technical field
The invention belongs to civil engineering work and measure field of engineering technology, relate to a kind of Omnibearing GPS multi-path signal testing device.
Background technology
In recent years, along with the carrier wave relative positioning technology among the GPS is progressively ripe, this has the deformation monitoring method of superior functions such as efficient, quick, full-automatic, round-the-clock and high precision in super-huge civil engineering work, to begin to use.Can obtain a large amount of repeated measures data of measuring point through the GPS deformation monitoring; These data messages not only comprise the real deflection of buildings; Also contain simultaneously multiple mushing error item inevitably, like the error relevant: satellite orbit deviation, satellite clock correction with gps satellite; Propagate relevant error with satellite-signal: ionospheric refraction, tropospheric refraction, multipath effect; The error relevant: observational error, receiver clock correction, antenna phase center deviation with receiving equipment; Other error: earth self-rotation, relativistic effect influence, earth tide influence etc.
In these error sources, earth rotation influence, earth tide influence equal error after modelling corrects, and the residue residual error can be ignored the influence of short baseline.Carrier wave relative positioning mode belongs to the double difference phase observation model, according to the correlation principle at baseline two ends, can eliminate the influence of relativistic effect, satellite clock correction and receiver clock correction fully, and atmospheric refraction and satellite orbital error are also had weakening effect well.And the error that multipath effect causes; Along with the increase of reverberation distance decay is very fast, make multipath effect the survey station correlativity very a little less than, even very short baseline; To influence difference also very big for multipath between two stations; Ask difference method little between standing to the elimination effect of multipath error, and not preferably model correct, multipath effect has become the maximum restraining factors that influence hi-Fix.
When adopting GPS that structure is monitored; The position that each gps antenna is installed is different; Their residing environment are also just different; Therefore the different multipath error that the reflecting medium of varying environment will cause is studied and is summarized common medium the rule that influences of gps signal is had important practical significance.But Chinese scholars is in the exploratory stage basically to the experimental study that influences rule of gps signal at present; Be that reflecting plate simply is placed in the next door of gps antenna or the mode of reflecting plate being hung up through tripod produces multi-path signal mostly, do numerous defectives like this: the difficult accurately control of the height of (1) reflecting plate; (2) the difficult accurately control of the distance of reflecting plate and gps antenna; (3) the difficult accurately control of the relative orientation of reflecting plate and gps antenna; (4) difficult firm the fixing of the reflecting plate of different sizes.
Therefore, develop a kind of omnibearing GPS multi-path signal testing device civil engineering work and the staff that measures field of engineering technology are studied the regularity of GPS multi-path signal, and then improve the GPS bearing accuracy and have important practical significance.
Summary of the invention
The invention provides a kind of Omnibearing GPS multi-path signal testing device, its objective is the problems such as the difficult accurately control of relative orientation that solve distance, reflecting plate and the gps antenna of height, reflecting plate and the gps antenna of reflecting plate in the GPS multipath error experiments.
Technical scheme of the present invention is following:
Omnibearing GPS multi-path signal testing device, mainly by fixed strip bolt under fixed strip, the reflecting plate under fixed strip bolt, marmem twisted wire, reflecting plate, the reflecting plate on fixed strip, the reflecting plate on anchor clamps, link, the reflecting plate, roller bearing, tightening device, runner, runner handle, reflecting plate support bar, reflecting plate support bar bolt, joint flange, expansion link, expansion link bearing, expansion link carrier setting bolt, track, gps signal receiver antenna, press down that footpath plate, gps signal receiver antenna support, gps signal receiver antenna support bolt and gps signal receiver antenna support form.Main technical schemes is: track is fixed on the ground, and an end of track connects the gps signal receiver antenna support, and the upper end of bearing connects the gps signal receiver antenna to be supported, and connects on supporting and presses down the footpath plate, presses down the gps signal receiver antenna directly is installed above the plate; An other end of track connects the bearing of expansion link, and the upper end of bearing connects expansion link, expansion link upper end joint flange, and the flange upper end is connected with the reflecting plate support bar through bolt; The bottom symmetry of reflecting plate support bar is equipped with two runners, two links of corresponding position, upper end welding, and link is connected through the marmem twisted wire with runner is middle; Reflecting plate support bar at place, two runner top breaks off, and a tightening device and roller bearing are installed by the open position place; Above the reflecting plate support bar disconnection position fixed strip and last fixed strip under the reflecting plate are installed, following fixed strip and support bar welding, last fixed strip is connected with support bar through anchor clamps, is evenly distributed with bolt hole on last fixed strip and the following fixed strip.
Through unclamping the tightening device on the reflecting plate support bar, can make reflecting plate change pitch angle; Through the length of adjustment expansion link, can change the height of reflecting plate; Can change the distance between reflecting plate and the gps signal receiver antenna through adjustment expansion link carrier setting bolt; Can change the orientation between reflecting plate and the gps signal receiver antenna through adjustment reflecting plate support bar bolt; Can make device be applicable to the reflecting plate of different sizes through the position of adjustment anchor clamps on reflecting plate supports.In addition, the marmem twisted wire can effectively be controlled the fastness of reflecting plate, presses down the footpath plate and can effectively eliminate the multi-path signal from gps signal receiver antenna bottom.
Effect of the present invention and benefit are embodied in that the relative orientation of accurately control of distance, reflecting plate and gps antenna of accurately control of height, reflecting plate and the gps antenna of reflecting plate can accurately be controlled, the size of expelling plate can be regulated, the material of expelling plate can freely be changed.This device is studied the regularity of GPS multi-path signal for engineering technical personnel, and then improves the GPS bearing accuracy a strong instrument is provided.
Description of drawings
Fig. 1 is the side elevational view of Omnibearing GPS multi-path signal testing device.
Fig. 2 is the A-A sectional view of Omnibearing GPS multi-path signal testing device among Fig. 1.
Fig. 3 is the B-B sectional view of Omnibearing GPS multi-path signal testing device among Fig. 1.
Fig. 4 be in the Omnibearing GPS multi-path signal testing device reflecting plate face upward the synoptic diagram of bowing.
Fig. 5 is the up-down synoptic diagram of reflecting plate in the Omnibearing GPS multi-path signal testing device.
Fig. 6 be in the Omnibearing GPS multi-path signal testing device reflecting plate move forward and backward synoptic diagram.
Fig. 7 is the rotation synoptic diagram of reflecting plate in the Omnibearing GPS multi-path signal testing device.
Fig. 8 is the size adjustment synoptic diagram of reflecting plate in the Omnibearing GPS multi-path signal testing device.
Among the figure: 1. anchor clamps; 2. link; 3. fixed strip on the reflecting plate; 4. fixed strip bolt on the reflecting plate; 5. marmem twisted wire; 6. reflecting plate; 7. fixed strip under the reflecting plate; 8. fixed strip bolt under the reflecting plate; 9. roller bearing; 10. tightening device; 11. runner; 12. runner handle; 13. reflecting plate support bar; 14. reflecting plate support bar bolt; 15. joint flange; 16. expansion link; 17. expansion link bearing; 18. expansion link carrier setting bolt; 19. track; 20.GPS signal receiver antenna; 21. press down the footpath plate; 22.GPS the signal receiver antenna supports; 23.GPS signal receiver antenna support bolt; 24.GPS signal receiver antenna support.
Embodiment
Be described in detail implementation step of the present invention below in conjunction with technical scheme and accompanying drawing.
Step 1. through analyzing aerial gps satellite the regularity of distribution and carry out multipath and test residing position, confirm the size and the parameter of multi-path signal testing device.
An other end of step 3. track 19 connects expansion link bearing 17 through bolt 18; The lower end of expansion link 16 connects bearing 17, upper end joint flange 15, and flange 15 upper ends are connected with reflecting plate support bar 13 through bolt 14.
The bottom symmetry of step 4. reflecting plate support bar 13 is equipped with two runners 11, two links 2 of corresponding position, upper end welding, and link 2 is connected through marmem twisted wire 5 with runner is middle.
Fixed strip 7 and last fixed strip 3 under the reflecting plate are installed above the step 6. reflecting plate support bar 13 disconnection positions; Following fixed strip 7 and support bar 13 welding, last fixed strip 3 is connected with support bar 13 through anchor clamps 1; Be evenly distributed with bolt hole on last fixed strip and the following fixed strip.
Claims (1)
1. Omnibearing GPS multi-path signal testing device is by fixed strip bolt (8), roller bearing (9), tightening device (10), runner (11), runner handle (12), reflecting plate support bar (13), reflecting plate support bar bolt (14), joint flange (15), expansion link (16), expansion link bearing (17), expansion link carrier setting bolt (18), track (19), gps signal receiver antenna (20) under fixed strip (7), the reflecting plate under fixed strip bolt (4), marmem twisted wire (5), reflecting plate (6), the reflecting plate on fixed strip (3), the reflecting plate on anchor clamps (1), link (2), the reflecting plate, press down that footpath plate (21), gps signal receiver antenna support (22), gps signal receiver antenna support bolt (23), gps signal receiver antenna support (24) is formed; It is characterized in that: an end that fixes track (19) on the ground connects gps signal receiver antenna support (24); The upper end of gps signal receiver antenna support (24) connects the gps signal receiver antenna and supports (22); Support the connection of (22) upper end and press down footpath plate (21), press down the top gps signal receiver antenna (20) of installing of footpath plate (21); An other end of track (19) connects expansion link bearing (17); The upper end of expansion link bearing (17) connects expansion link (16); Expansion link (16) upper end connects joint flange (15), and joint flange (15) upper end is connected with reflecting plate support bar (13) through expansion link carrier setting bolt (18); The bottom symmetry of reflecting plate support bar (13) is equipped with two runners (11), corresponding position, upper end welding two links (2), and link (2) is connected through marmem twisted wire (5) with runner (11) is middle; Reflecting plate support bar (13) at place, two runners (11) top breaks off, and a tightening device (10) and roller bearing (9) are installed by the open position place; Above reflecting plate support bar (13) the disconnection position fixed strip (3) on fixed strip under the reflecting plate (7) and the reflecting plate is installed; Fixed strip under the reflecting plate (7) and reflecting plate support bar (13) welding; Fixed strip on the reflecting plate (3) is connected with reflecting plate support bar (13) through anchor clamps (1), is evenly distributed with bolt hole on the fixed strip (7) under fixed strip on the reflecting plate (3) and the reflecting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100113282A CN101629998B (en) | 2009-04-25 | 2009-04-25 | Omnibearing GPS multi-path signal testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100113282A CN101629998B (en) | 2009-04-25 | 2009-04-25 | Omnibearing GPS multi-path signal testing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101629998A CN101629998A (en) | 2010-01-20 |
| CN101629998B true CN101629998B (en) | 2012-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100113282A Expired - Fee Related CN101629998B (en) | 2009-04-25 | 2009-04-25 | Omnibearing GPS multi-path signal testing device |
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| CN (1) | CN101629998B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6753812B2 (en) * | 2001-02-02 | 2004-06-22 | Rosum Corporation | Time-gated delay lock loop tracking of digital television signals |
| US6900758B1 (en) * | 2001-10-17 | 2005-05-31 | Sirf Technology, Inc. | System, method, apparatus and means for constructing building tomography and timing information |
| WO2006132003A1 (en) * | 2005-06-06 | 2006-12-14 | National University Corporation Tokyo University Of Marine Science And Technology | Gps reception device and gps positioning correction method |
| CN100588292C (en) * | 2003-09-22 | 2010-02-03 | 美国联合包装服务有限公司 | Co-existing system for testing electromagnetic signal covering near the transportation route |
| CN201417305Y (en) * | 2009-04-25 | 2010-03-03 | 大连理工大学 | Omnibearing GPS multi-path signal testing device |
-
2009
- 2009-04-25 CN CN2009100113282A patent/CN101629998B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6753812B2 (en) * | 2001-02-02 | 2004-06-22 | Rosum Corporation | Time-gated delay lock loop tracking of digital television signals |
| US6900758B1 (en) * | 2001-10-17 | 2005-05-31 | Sirf Technology, Inc. | System, method, apparatus and means for constructing building tomography and timing information |
| CN100588292C (en) * | 2003-09-22 | 2010-02-03 | 美国联合包装服务有限公司 | Co-existing system for testing electromagnetic signal covering near the transportation route |
| WO2006132003A1 (en) * | 2005-06-06 | 2006-12-14 | National University Corporation Tokyo University Of Marine Science And Technology | Gps reception device and gps positioning correction method |
| CN201417305Y (en) * | 2009-04-25 | 2010-03-03 | 大连理工大学 | Omnibearing GPS multi-path signal testing device |
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| Publication number | Publication date |
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| CN101629998A (en) | 2010-01-20 |
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