Multipoint positioning system receiving station position error correction method
An error correction and multi-point positioning technology, which is applied in satellite radio beacon positioning systems, radio wave measurement systems, and measurement devices, can solve problems affecting the normal operation of the system and heavy testing workload, so as to ensure positioning accuracy and reduce The effect of the installation effort
Active Publication Date: 2017-12-01
芜湖华创光电科技有限公司
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Problems solved by technology
When the scale of the airport is large, the number of receiving stations will be relatively large, so that the real-time kinematic (abbreviated as RTK) test workload will be very large
In addition, during the operation of the system, if the location of individual receiving stations changes, it is necessary to re-test the location of the receiving stations, which will affect the normal operation of the system
Method used
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Embodiment 1
[0066] Embodiment one: Take the actual receiving station position error correction of an airport as an example, select 4 receiving stations here, the position of receiving stations, including the true value and measured value, are shown in Table 2, and the receiving station position is measured in Table 2 The standard deviation of σ=50m; considering 5 beacons, the true and measured values of their positions are given in Table 1, and the measurement standard deviation of the beacon position σ=0.1m. Using this invention, under the condition of considering the position error of the beacon, that is, select the "measurement position" in Table 1, the position error correction situation of the four receiving stations is shown in Table 3, the initial maximum error is 118m, after optimization The location error of the receiving station is about 1m, which meets the requirements of engineering use.
[0067] Table 1 Location of 5 beacons
[0068]
[0069] Table 2 Locations of 4 rece...
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The invention discloses a multipoint positioning system receiving station position error correction method. The multipoint positioning system receiving station position error correction method comprises steps of (1) establishment of a coordinate system, (2) function design, and (3) optimization of method design. The multipoint positioning system receiving station position error correction method is advantageous in that workload of civil aviation multipoint positioning system initial installation testing is reduced, and an electronic tacheometer and other high precision measurement devices are not required to measure position information of receiving station antennas sequentially, and then the workload of the installation is greatly reduced; after the receiving stations are in service, when the position of one receiving station is required to be changed, the acquisition of the GPS coordinate of the position after the change is required, and the new position coordinate of the corresponding receiving station is determined by a software algorithm, and then workload of maintenance is reduced; after the whole system is in service for a while, on-line correction of position errors accumulated during the operation process of the system and other various errors is realized by using beacons, and therefore the positioning precision of the system during the operation process is guaranteed.
Description
technical field [0001] The invention relates to the technical field of traffic control in civil aviation, in particular to a position error correction method for a receiving station of a multipoint positioning system. Background technique [0002] The air transport market is developing rapidly, and the rapid growth of air transport volume puts forward higher requirements for the use of airspace and airports. The contradiction between the high-density traffic flow's demand for airspace and the shortage of available airspace resources has become increasingly prominent. Civil Aviation Multilateration (MLAT for short) can provide high-precision, high-coverage, high-data-rate surveillance services to meet the needs of air traffic services for airport scene surveillance, ensure air transportation safety, and improve airspace capacity and aircraft operating efficiency . The MLAT system uses multiple receiving stations to receive the 1090MHz response signal transmitted by the civi...
Claims
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IPC IPC(8): G01S19/23
CPCG01S19/235
Inventor 吴双
Owner 芜湖华创光电科技有限公司