A method, apparatus and device for determining a coverage area of a satellite positioning signal
By acquiring the antenna basic parameters and target coverage area parameters of the satellite constellation simulator, and independently adjusting the coverage range using a signal limiting device, the problem of adjusting coupling effects in GNSS simulator networking was solved, achieving efficient and precise coverage area control.
Patent Information
- Application Number
- CN202610894709.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-06-22
- Publication Date
- 2026-11-03
AI Technical Summary
When existing GNSS simulators are networked, adjusting the coverage boundary in one direction will affect other directions, making the adjustment process complex and difficult to quickly achieve the planned goals in high-precision scenarios where the accuracy of the coverage boundary is critical.
By acquiring the basic antenna parameters and boundary adjustment parameters of the target coverage area from the satellite constellation simulator arranged side by side, the coverage range of the antenna is independently adjusted using the signal limiting device, a signal obstruction boundary model is constructed, and the length of the signal limiting device is calculated and adjusted to control the coverage boundary.
It enables independent adjustment of the satellite positioning signal coverage area, improves positioning efficiency and accuracy, simplifies the debugging process, and reduces construction difficulty and cost, making it particularly suitable for special scenarios such as tunnels and narrow passages.
Smart Images
Figure CN123029578A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of navigation and positioning technology, and in particular to a method, apparatus, and equipment for determining the coverage area of satellite positioning signals. Background Technology
[0002] Global Navigation Satellite System (GNSS) constellation simulation positioning signal technology has been widely applied in receiver development, terminal testing, and indoor positioning blind spot filling. These simulators can generate signals from multiple satellites based on preset parameters, simulating the GNSS receiving environment at a specific coordinate point. In practical engineering deployments, to achieve continuous navigation coverage over large areas or linear regions (such as tunnels, underground passages, and narrow streets), it is usually necessary to deploy multiple GNSS simulators in a network. Each simulator covers a certain area through a transmitting antenna configured with a specific radiation pattern. The signals from each simulator overlap in space to form a coverage boundary, i.e., the intersection point. In existing networking methods, simulator transmitting antennas often use fixed models, with their radiation patterns having predetermined beamwidth and gain distribution characteristics. The shape and range of the coverage area are determined by the inherent radiation pattern of the antenna and its transmission power. When it is necessary to adjust the coverage boundary position between a simulator and adjacent simulators, operators typically adjust the simulator's RF output power or fine-tune the antenna attitude (such as rotation or tilt). For example, by increasing the transmission power of a simulator, the coverage radius of that simulator's signal can be expanded, thereby pushing the coverage boundary outward.
[0003] However, the existing adjustment methods mentioned above have significant limitations in multi-point network scenarios. Since changes in the transmit power or antenna pointing of a single simulator simultaneously affect the signal strength radiated in all directions, when operators increase power to improve coverage distance in a certain direction (e.g., the east), not only does the intersection point between the east simulator and adjacent simulators shift, but the intersection points between the simulator and adjacent simulators in other directions (west, south, etc.) also shift synchronously. This global impact of the adjustment action results in a coupling effect in the coverage boundary adjustment process, i.e., "adjusting one point affects many." In actual network optimization, construction personnel often need to repeatedly increase or decrease power or fine-tune antenna attitude for the same simulator and verify the boundary position through multiple drive tests. This debugging workload is large and inefficient, and it is difficult to quickly achieve the expected coverage planning goals in scenarios with high coverage boundary accuracy requirements, such as tunnels and narrow passages. Therefore, existing technologies lack a solution that can directionally adjust the coverage boundary in a specific direction without interfering with the coverage range in other directions. Summary of the Invention
[0004] This invention provides a method, apparatus, and device for determining the coverage area of satellite positioning signals, which solves the problems of easy linkage interference and control difficulties when adjusting the coverage area of GNSS simulators.
[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows: This invention provides a method for determining the coverage area of a satellite positioning signal, comprising: Obtain the first fundamental parameters of the first antenna of the first satellite constellation simulator and the second fundamental parameters of the second antenna of the second satellite constellation simulator in multiple side-by-side satellite constellation simulators; Obtain the boundary adjustment parameters of the first target coverage area of the first satellite constellation simulator and the second target coverage area of the second satellite constellation simulator; Based on the first basic parameters and the boundary adjustment parameters, a first adjustment amount of the first signal limiting device of the first satellite constellation simulator is determined; the first signal limiting device is used to adjust the coverage area of the satellite positioning signal of the first antenna. Based on the second basic parameter and the boundary adjustment parameter, a second adjustment amount of the second signal limiting device of the second satellite constellation simulator is determined; the second signal limiting device is used to adjust the coverage area of the satellite positioning signal of the second antenna. The length of the first signal limiting device is adjusted according to the first adjustment amount to obtain the first target coverage area after adjustment by the first satellite constellation simulator; The length of the second signal limiting device is adjusted according to the second adjustment amount to obtain the second target coverage area after adjustment by the second satellite constellation simulator; the second target coverage area is adjacent to the first target coverage area and does not overlap.
[0006] Optionally, obtain the first fundamental parameters of the first antenna of the first satellite constellation simulator and the second fundamental parameters of the second antenna of the second satellite constellation simulator in multiple side-by-side satellite constellation simulators, including: The parameters of the first and second antennas of adjacent first satellite constellation simulators in multiple side-by-side satellite constellation simulators are measured to obtain the basic parameters of the first and second antennas. The basic parameters of the first and second antennas include the vertical height of the phase center of the first and second antennas from the ground, the horizontal distance of the phase center of the first antenna from the vertical plane of the first signal limiting device, the horizontal distance of the phase center of the second antenna from the vertical plane of the second signal limiting device, the satellite positioning signal blocking efficiency coefficient, and the vertical half-power angle of the satellite positioning signal.
[0007] Optionally, obtain the boundary adjustment parameters of the first target coverage area of the first satellite constellation simulator and the second target coverage area of the second satellite constellation simulator, including: Obtain network coverage requirement data for multiple satellite constellation simulators arranged side by side; Based on the network coverage requirement data, determine the coordinates of the boundary points of the first target coverage area of the first satellite constellation simulator and the second target coverage area of the second satellite constellation simulator. Based on the coordinates of the boundary point, the horizontal distance from the boundary point to the ground projection point of the phase center of the first antenna and the second antenna is measured to obtain the boundary adjustment parameters.
[0008] Optionally, based on the first basic parameters and boundary adjustment parameters, the first adjustment amount of the first signal limiting device of the first satellite constellation simulator is determined, including: The basic parameters of the first antenna and the boundary adjustment parameters are processed by the input signal blocking boundary determination model to obtain the adjustment amount of the first signal limiting device.
[0009] Optionally, the signal obstruction boundary determination model is: ; in, For the first i The adjustment amount of the signal limiting device i It is 1 or 2. For the first i The vertical height of the phase center of each antenna from the ground. For the first i The horizontal distance from the phase center of each antenna to the vertical plane of the signal limiting device To cover the boundary points of the target to the th i The horizontal distance between the ground projection points of the antenna phase centers k The efficiency coefficient for satellite positioning signal obstruction. The vertical half-power angle of the satellite positioning signal.
[0010] Optionally, the length of the first signal limiting device is adjusted according to the first adjustment amount to obtain the first target coverage area after adjustment by the first satellite constellation simulator, including: Based on the first adjustment amount, the vertical length of the obstruction surface adjacent to the target coverage boundary point in the first signal limiting device is adjusted to obtain the first target coverage area after adjustment by the first satellite constellation simulator.
[0011] Optionally, the method for determining the coverage area of the satellite positioning signal further includes: Boundary detection processing is performed on the adjusted first target coverage area to obtain the first coverage boundary verification result; Boundary detection processing is performed on the adjusted second target coverage area to obtain the second coverage boundary verification result; Based on the first coverage boundary verification result, the adjustment amount of the first signal limiting device is corrected to obtain the first final coverage area; Based on the second coverage boundary verification result, the adjustment amount of the second signal limiting device is corrected to obtain the second final coverage area.
[0012] This invention also provides a device for determining the coverage area of a satellite positioning signal, comprising: The first acquisition module is used to acquire the first basic parameters of the first antenna of the first satellite constellation simulator and the second basic parameters of the second antenna of the second satellite constellation simulator in a plurality of satellite constellation simulators arranged side by side. The second acquisition module is used to acquire the boundary adjustment parameters of the first target coverage area of the first satellite constellation simulator and the second target coverage area of the second satellite constellation simulator. The processing module is used to determine a first adjustment amount of the first signal limiting device of the first satellite constellation simulator based on the first basic parameters and boundary adjustment parameters; the first signal limiting device is used to adjust the satellite positioning signal coverage area of the first antenna; a second adjustment amount of the second signal limiting device of the second satellite constellation simulator is determined based on the second basic parameters and boundary adjustment parameters; the second signal limiting device is used to adjust the satellite positioning signal coverage area of the second antenna; the length of the first signal limiting device is adjusted according to the first adjustment amount to obtain the first target coverage area adjusted by the first satellite constellation simulator; the length of the second signal limiting device is adjusted according to the second adjustment amount to obtain the second target coverage area adjusted by the second satellite constellation simulator; the second target coverage area is adjacent to the first target coverage area and does not overlap.
[0013] This invention also provides a computing device, including: a processor and a memory storing a computer program, wherein the computer program, when run by the processor, executes the above-described method.
[0014] This invention also provides a computer-readable storage medium storing instructions that, when executed on a computer, cause the computer to perform the above-described method.
[0015] The technical solution of the present invention has at least the following effects: The above-described solution of the present invention obtains the first basic parameters of the first antenna of an adjacent first satellite constellation simulator and the second basic parameters of the second antenna of a second satellite constellation simulator in a plurality of side-by-side satellite constellation simulators; obtains the boundary adjustment parameters of the first target coverage area of the first satellite constellation simulator and the second target coverage area of the second satellite constellation simulator; determines the first adjustment amount of the first signal limiting device of the first satellite constellation simulator based on the first basic parameters and the boundary adjustment parameters; the first signal limiting device is used to adjust the satellite positioning signal coverage area of the first antenna; determines the second adjustment amount of the second signal limiting device of the second satellite constellation simulator based on the second basic parameters and the boundary adjustment parameters; the second signal limiting device is used to adjust the satellite positioning signal coverage area of the second antenna; adjusts the length of the first signal limiting device according to the first adjustment amount to obtain the first target coverage area of the first satellite constellation simulator after adjustment; adjusts the length of the second signal limiting device according to the second adjustment amount to obtain the second target coverage area of the second satellite constellation simulator after adjustment; the second target coverage area is adjacent to the first target coverage area and does not overlap. This solution achieves independent adjustment of the satellite positioning signal coverage area, improving positioning efficiency and accuracy. Attached Figure Description
[0016] Figure 1 This is a flowchart of a method for determining the coverage area of a satellite positioning signal provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the network coverage of the satellite positioning signal simulator provided in an embodiment of the present invention; Figure 3 This is a schematic diagram illustrating the coverage boundary expansion process when the power of the satellite positioning signal simulator provided in this embodiment of the invention increases; Figure 4 This is a schematic diagram of the spatial position of the signal limiter and antenna provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the satellite positioning signal coverage area adjustment process provided in an embodiment of the present invention; Figure 6 This is a structural diagram of the device for determining the coverage area of satellite positioning signals provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of the computing device provided in an embodiment of the present invention; Among them, 1. First antenna; 2. Second antenna; 3. Third antenna; 4. Westward signal limiter; 5. Eastward signal limiter. Detailed Implementation
[0017] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
[0018] like Figure 1 As shown, an embodiment of the present invention proposes a method for determining the coverage area of a satellite positioning signal, comprising: Step 11: Obtain the first basic parameters of the first antenna of the first satellite constellation simulator and the second basic parameters of the second antenna of the second satellite constellation simulator in multiple side-by-side satellite constellation simulators. Step 12: Obtain the boundary adjustment parameters of the first target coverage area of the first satellite constellation simulator and the second target coverage area of the second satellite constellation simulator; Step 13: Determine the first adjustment amount of the first signal limiting device of the first satellite constellation simulator based on the first basic parameters and the boundary adjustment parameters; the first signal limiting device is used to adjust the coverage area of the satellite positioning signal of the first antenna. Step 14: Determine the second adjustment amount of the second signal limiting device of the second satellite constellation simulator based on the second basic parameters and the boundary adjustment parameters; the second signal limiting device is used to adjust the coverage area of the satellite positioning signal of the second antenna. Step 15: Adjust the length of the first signal limiting device according to the first adjustment amount to obtain the first target coverage area after adjustment by the first satellite constellation simulator; Step 16: Adjust the length of the second signal limiting device according to the second adjustment amount to obtain the second target coverage area after adjustment by the second satellite constellation simulator; the second target coverage area is adjacent to the first target coverage area and does not overlap.
[0019] The technical solution described in this embodiment involves configuring independently adjustable signal limiting devices around the antenna and constructing a signal obstruction boundary determination model based on the antenna phase center height, the distance between the antenna and the signal limiting devices, and the positional relationship of the target coverage boundary points. This model calculates the required extension length of each signal limiting device in a specified direction, and then constrains the signal coverage radius by adjusting the length of the corresponding obstruction surface. This solution simplifies the on-site debugging process of GNSS analog positioning networks, shortens network optimization time, and reduces construction difficulty and labor costs. It is particularly suitable for scenarios with special requirements for coverage shape, such as tunnels and narrow passages.
[0020] In an optional embodiment of the present invention, step 11, obtaining the first basic parameters of the first antenna of the first satellite constellation simulator and the second basic parameters of the second antenna of the second satellite constellation simulator in a plurality of side-by-side satellite constellation simulators, may include: Step 111: Perform parameter measurements on the first and second antennas of adjacent first satellite constellation simulators in multiple side-by-side satellite constellation simulators to obtain the basic parameters of the first and second antennas. The basic parameters of the first and second antennas include the vertical height of the phase center of the first and second antennas from the ground, the horizontal distance from the phase center of the first antenna to the vertical plane of the first signal limiting device, the horizontal distance from the phase center of the second antenna to the vertical plane of the second signal limiting device, the satellite positioning signal blocking efficiency coefficient, and the vertical half-power angle of the satellite positioning signal.
[0021] In step 111 of this embodiment, both the first antenna and the second antenna are GNSS analog positioning signal transmitting antennas, and their phase centers are the equivalent origin of the antenna radiated signals. The vertical height of the phase center of the first antenna from the ground... Vertical height from the phase center of the second antenna to the ground The horizontal distance from the phase center of the first antenna to the vertical plane of the first signal limiting device can be obtained on-site by using a laser rangefinder or a level. And the horizontal distance from the phase center of the second antenna to the vertical plane of the second signal limiting device The GNSS signal obstruction efficiency coefficient is determined by the mechanical design drawings of the mounting bracket and can be re-measured and verified using calipers after equipment assembly. k This is an empirical constant used to correct for the actual signal blocking effectiveness of a metallic shield. Its value is obtained through prior calibration experiments in a microwave anechoic chamber, where the coverage boundary offset is measured at a known extension length, and then calculated using fitting. GNSS signal vertical half-power angle. The beamwidth is the beamwidth at which the antenna's radiated power in the vertical plane drops to half of its peak value, provided in the antenna's factory test report.
[0022] In an optional embodiment of the present invention, step 12, obtaining the boundary adjustment parameters of the first target coverage area of the first satellite constellation simulator and the second target coverage area of the second satellite constellation simulator, may include: Step 121: Obtain the network coverage requirement data of multiple satellite constellation simulators arranged side by side; Step 122: Based on the network coverage requirement data, determine the coordinates of the boundary points of the first target coverage area of the first satellite constellation simulator and the second target coverage area of the second satellite constellation simulator. Step 123: Based on the coordinates of the boundary point, measure the horizontal distance from the boundary point to the ground projection point of the phase center of the first antenna and the second antenna respectively to obtain the boundary adjustment parameters.
[0023] In step 121 of this embodiment, the network coverage requirement data comes from the engineering design scheme of the GNSS analog positioning network. This scheme, based on the site space dimensions, simulator deployment spacing, and required positioning continuity indicators, plans the expected intersection boundary positions of signal coverage between adjacent satellite constellation simulators. This requirement data is typically provided to construction personnel in the form of a site layout plan combined with site markers.
[0024] In step 122, the specific method for determining the coordinates of the target coverage boundary point based on the network coverage requirement data is as follows: The expected intersection boundary line in the plan layout diagram is correlated with the antenna positions deployed on-site, determining the specific orientation of the boundary point along the line connecting the first antenna and the second antenna. If the first antenna and the second antenna are arranged in an east-west direction, the target coverage boundary point is located on the line connecting them, and its coordinates can be expressed as the eastward horizontal distance from the projection point of the first antenna.
[0025] In step 123, the process of measuring the horizontal distance based on the coordinates of the target coverage boundary point is as follows: using a ranging wheel or laser rangefinder, the straight-line distance from the ground projection point of the first antenna phase center to the target coverage boundary point is measured along the ground. And the straight-line distance from the ground projection point of the second antenna phase center to the same target coverage boundary point. This set of distance values constitutes the boundary parameters of the target coverage area, corresponding to the adjustment calculation inputs of the first signal limiting device and the second signal limiting device in opposite directions.
[0026] In an optional embodiment of the present invention, step 13, determining the first adjustment amount of the first signal limiting device of the first satellite constellation simulator based on the first basic parameter and the boundary adjustment parameter, may include: Step 131: Input the basic parameters of the first antenna and the boundary adjustment parameters into the signal blocking boundary determination model for processing to obtain the adjustment amount of the first signal limiting device; The signal obstruction boundary determination model is as follows: ; in, For the first i The adjustment amount of the signal limiting device i It is 1 or 2. For the first i The vertical height of the phase center of each antenna from the ground. For the first iThe horizontal distance from the phase center of each antenna to the vertical plane of the signal limiting device To cover the boundary points of the target to the th i The horizontal distance between the ground projection points of the antenna phase centers k The efficiency coefficient for satellite positioning signal obstruction. The vertical half-power angle of the satellite positioning signal; The adjustment amount of the first signal limiting device in the direction opposite to the second antenna is based on: ; We obtained, among which, The adjustment amount of the first signal limiting device. The vertical height from the phase center of the first astronaut to the ground. The horizontal distance from the phase center of the first antenna to the vertical plane of the signal limiting device. The horizontal distance from the target coverage boundary point to the ground projection point of the first antenna phase center is calculated using boundary adjustment parameters. k The efficiency coefficient for satellite positioning signal obstruction. The vertical half-power angle of the satellite positioning signal.
[0027] In step 131 of this embodiment, the signal obstruction boundary determination model is constructed based on the geometric principle of similar triangles and combined with an antenna radiation characteristic correction factor. When both the first antenna and the second antenna are equipped with independently adjustable signal limiting devices, the precise location of the coverage boundary between them is jointly determined by the obstruction extension length of their respective signal limiting devices in that direction. The model is based on the vertical height from the antenna phase center to the ground. Horizontal distance from the antenna phase center to the vertical plane of the signal limiting device and the horizontal distance from the target coverage boundary point to the antenna projection point As a geometric input, a GNSS signal blocking efficiency coefficient is also introduced. k Vertical half-power angle of GNSS signal The ideal geometric relationships are corrected to compensate for non-ideal effects in actual electromagnetic propagation. The measured fundamental parameters of the first antenna are then... , The boundary parameters corresponding to the first antenna and Substituting into the model, the adjustment amount of the first signal limiting device in the direction opposite to the second antenna is calculated. .
[0028] Similarly, the second adjustment value of the second signal limiting device of the second satellite constellation simulator can adjust the basic parameters of the second antenna. , and boundary parameters Substituting into the model, the adjustment amount of the second signal limiting device in the direction opposite to the first antenna is calculated. The calculation formula is: ; The adjustment amount of the second signal limiting device is obtained, wherein, The adjustment amount of the second signal limiting device. The vertical height from the phase center of the second antenna to the ground. The horizontal distance from the second antenna phase center to the vertical plane of the signal limiting device. The horizontal distance from the target coverage boundary point to the ground projection point of the second antenna phase center; Adjustment amount ( i (1 or 2) A positive value indicates that the corresponding occlusion surface needs to be extended downwards by the corresponding length to enhance occlusion, while a negative value indicates that it needs to be contracted upwards to widen the coverage; and and The polarities remain opposite, that is When it is a positive value, It is a negative value.
[0029] In an optional embodiment of the present invention, step 15, which involves adjusting the length of the signal limiting device according to the adjustment amount to obtain the target coverage area, may include: Step 151: Adjust the length of the first signal limiting device according to the first adjustment amount to obtain the first target coverage area after adjustment by the first satellite constellation simulator.
[0030] In step 151 of this embodiment, the first signal limiting device and the second signal limiting device are each composed of multiple independent adjustable metal shielding surfaces, and adopt a retractable metal sheet or metal stack structure fixed to the periphery of the antenna, such as Figure 4 The westward signal limiter 4 and eastward signal limiter 5 are shown. Taking a two-dimensional planar coverage scenario as an example, each signal limiting device is typically configured with obstruction surfaces in four directions: east, south, west, and north. When it is necessary to adjust the coverage boundary between the first antenna and the second antenna, only the obstruction surfaces in the opposite directions need to be operated. Specifically, the operator adjusts the amount of adjustment obtained... The vertical extension length of the obstruction surface facing the second antenna in the first signal limiting device is changed by a mechanical adjustment mechanism; simultaneously, based on the adjustment amount... The vertical extension length of the shielding surface facing the first antenna in the second signal limiting device is changed. After adjustment, the signal blocking capability of the two signal limiting devices in that direction changes accordingly, thus constraining the signal coverage radius of the first and second antennas in that direction to a preset distance. and This ensures that the intersection point of the coverage boundaries of the two targets is precisely stabilized at the target coverage boundary point, so that the second target coverage area is adjacent to the first target coverage area and does not overlap.
[0031] In an optional embodiment of the present invention, the method for determining the coverage area of the satellite positioning signal may further include: Step 17: Perform boundary detection processing on the adjusted first target coverage area to obtain the first coverage boundary verification result; perform boundary detection processing on the adjusted second target coverage area to obtain the second coverage boundary verification result. Step 18: Based on the first coverage boundary verification result, the adjustment amount of the first signal limiting device is corrected to obtain the first final coverage area; based on the second coverage boundary verification result, the adjustment amount of the second signal limiting device is corrected to obtain the second final coverage area.
[0032] In step 17 of this embodiment, the process of boundary detection processing for the adjusted signal coverage area is as follows: After adjusting the obstruction surface lengths of the first and second signal limiting devices, a GNSS receiving terminal is used to perform a slow-moving test along the connecting line in the area between the first antenna and the second antenna. The receiving terminal displays its positioning calculation results and the carrier-to-noise ratio of the tracked satellite signal in real time. The tester records the actual physical location of the receiving terminal when the positioning result switches from the first antenna signal as the primary signal to the second antenna signal as the primary signal; this location is the actual coverage boundary intersection point. The actual intersection point location is compared with the coordinates of the target coverage boundary point, and the distance of the deviation along the path between the two is calculated as the coverage boundary verification result.
[0033] In step 18, the specific method for correcting the adjustment amount based on the coverage boundary verification results is as follows: If the actual intersection point is biased towards the second antenna side relative to the target coverage boundary point, it indicates that the coverage area of the first antenna is too large or the coverage area of the second antenna is too small. In this case, the extension length of the obstruction surface of the first signal limiting device in that direction can be appropriately increased, or the extension length of the obstruction surface of the second signal limiting device in that direction can be appropriately decreased. The reference value of the correction amount can still be estimated through the signal obstruction boundary determination model, that is, the required addition or reduction is calculated back from the actual measured deviation distance. Changes. After one or more fine-tuning and retesting, until the deviation between the actual intersection point and the target coverage boundary point converges to within the allowable tolerance range, the coverage area that accurately meets the network coverage requirements is finally obtained.
[0034] A specific embodiment of the method for determining the coverage area of satellite positioning signals provided in this invention is as follows: like Figure 2As shown, a positioning network consisting of three GNSS signal simulators is deployed in a two-dimensional planar coverage scenario of a factory area. Each GNSS signal simulator corresponds to one of three antennas: antenna 1, antenna 2, and antenna 3. The three GNSS signal simulators are arranged in a straight line along an east-west direction, with the second GNSS signal simulator located in the middle. The first GNSS signal simulator is adjacent to the second GNSS signal simulator to the east. The original signal coverage boundary intersection point is point b, corresponding to a coverage distance of 45m east of the second GNSS signal simulator. Based on the requirement for continuous network coverage, the boundary between the first and second GNSS signal simulators needs to be adjusted from point b to point b', as follows: Figure 3 and Figure 5 As shown, the target coverage distance (i.e., the horizontal distance from the target coverage boundary point to the ground projection point of the antenna phase center) east of the first GNSS signal simulator is ob'= L =50m. The GNSS transmitting antenna and supporting signal limiting device of the first GNSS signal simulator are pre-deployed. The signal limiting device is equipped with four independently adjustable shielding surfaces, corresponding to the east, south, west and north directions respectively. The shielding surface in the east direction corresponds to the coverage boundary adjacent to the second GNSS signal simulator.
[0035] Step 1: Measure the parameters of the pre-deployed first antenna (i.e., the first GNSS signal simulator antenna) and second antenna (i.e., the second GNSS signal simulator antenna) to obtain basic parameters. Measure the vertical height from the phase center of the first antenna to the ground. The vertical height of the second antenna phase center from the ground The horizontal distance from the phase center of the first antenna to the vertical plane of the first signal limiting device. The horizontal distance from the second antenna phase center to the vertical plane of the second signal limiting device The antenna test report revealed the vertical half-power angle of the GNSS signal for this batch of antennas. Based on the calibration experimental data conducted in a darkroom on metal sheets of the same material, the GNSS signal blocking efficiency coefficient was determined. k =1.02.
[0036] Step 2: Obtain network coverage requirement data and determine the coordinates of the target coverage boundary point c'. According to the design, point b' is located 50m due east of the first antenna projection point and 40m due west of the second antenna projection point. This represents the target coverage distance corresponding to the first antenna. The target coverage distance corresponding to the second line .
[0037] Step 3: Substitute the above parameters into the signal obstruction boundary determination model to calculate the adjustment amounts of the first and second signal limiting devices in the opposite directions. Calculate the adjustment amount corresponding to the first antenna: ; Substitution , , , , ,have to:
[0038] Calculated A positive value indicates that the eastward blocking surface of the first signal limiting device needs to be retracted upward by approximately 7.7 mm.
[0039] Calculate the adjustment amount corresponding to the second line: ; Substitution , , , , ,have to:
[0040] Calculated A negative value indicates that the eastward blocking surface of the second signal limiting device needs to be extended downwards by approximately [amount missing]. .
[0041] Step 4: According to the convention of adjustment values in this embodiment, negative values indicate downward extension to enhance obstruction, while positive values indicate upward contraction to reduce obstruction. The operator contracts the eastward obstruction surface of the first signal limiting device upward by 7.7mm and locks it in place to reduce the signal constraint of the first antenna in the east direction; the operator extends the westward obstruction surface of the second signal limiting device downward by 9.6mm and locks it in place to enhance the signal constraint of the second antenna in the west direction. After adjustment, the eastward coverage radius of the first antenna is widened to approximately 50m, and the westward coverage radius of the second antenna is constrained to approximately 40m. The intersection point of their coverage boundaries is precisely located at point b' at coordinates +50m, meeting the network coverage requirements.
[0042] The proposed method for determining the satellite positioning signal coverage area integrates adjustable-length signal limiters around the transmitting antenna of a GNSS simulator, configuring a corresponding number of adjustable surfaces according to different application scenarios. Basic parameters such as the height from the antenna phase center to the ground, the vertical distance from the antenna phase center to the antenna top, and the horizontal distance from these distances to the vertical surface of the signal limiter are pre-measured. The target coverage boundary point is determined based on actual network requirements, and its horizontal distance to the antenna's ground projection point is measured. The adjustment length of the corresponding direction signal limiter is calculated based on the principle of triangle similarity. The vertical length of the corresponding direction signal limiter is adjusted, utilizing its blocking effect on the GNSS signal to control the signal coverage boundary. This achieves independent and precise adjustment of the GNSS signal coverage area in a single direction, avoiding the problem of affecting other directions when adjusting one direction boundary. This shortens the optimization cycle of the positioning network, reduces construction and maintenance costs, and improves the performance of the GNSS simulation positioning network.
[0043] like Figure 6 As shown, this embodiment of the invention also provides a satellite positioning signal coverage area determination device 60, comprising: The first acquisition module 61 is used to acquire the first basic parameters of the first antenna of the first satellite constellation simulator and the second basic parameters of the second antenna of the second satellite constellation simulator in a plurality of satellite constellation simulators arranged side by side. The second acquisition module 62 is used to acquire the boundary adjustment parameters of the first target coverage area of the first satellite constellation simulator and the second target coverage area of the second satellite constellation simulator. Processing module 63 is used to determine a first adjustment amount of the first signal limiting device of the first satellite constellation simulator based on the first basic parameters and boundary adjustment parameters; the first signal limiting device is used to adjust the satellite positioning signal coverage area of the first antenna; a second adjustment amount of the second signal limiting device of the second satellite constellation simulator is determined based on the second basic parameters and boundary adjustment parameters; the second signal limiting device is used to adjust the satellite positioning signal coverage area of the second antenna; the length of the first signal limiting device is adjusted according to the first adjustment amount to obtain the first target coverage area adjusted by the first satellite constellation simulator; the length of the second signal limiting device is adjusted according to the second adjustment amount to obtain the second target coverage area adjusted by the second satellite constellation simulator; the second target coverage area is adjacent to the first target coverage area and does not overlap.
[0044] Optionally, the first acquisition module 61 is specifically used for: The parameters of the first and second antennas of adjacent first satellite constellation simulators in multiple side-by-side satellite constellation simulators are measured to obtain the basic parameters of the first and second antennas. The basic parameters of the first and second antennas include the vertical height of the phase center of the first and second antennas from the ground, the horizontal distance of the phase center of the first antenna from the vertical plane of the first signal limiting device, the horizontal distance of the phase center of the second antenna from the vertical plane of the second signal limiting device, the satellite positioning signal blocking efficiency coefficient, and the vertical half-power angle of the satellite positioning signal.
[0045] Optionally, the second acquisition module 62 is specifically used for: Obtain network coverage requirement data for multiple satellite constellation simulators arranged side by side; Based on the network coverage requirement data, determine the coordinates of the boundary points of the first target coverage area of the first satellite constellation simulator and the second target coverage area of the second satellite constellation simulator. Based on the coordinates of the boundary point, the horizontal distance from the boundary point to the ground projection point of the phase center of the first antenna and the second antenna is measured to obtain the boundary adjustment parameters.
[0046] Optionally, processing module 63 is specifically used for: The basic parameters of the first antenna and the boundary adjustment parameters are processed by the input signal blocking boundary determination model to obtain the adjustment amount of the first signal limiting device.
[0047] Optionally, the signal obstruction boundary determination model is: ; in, For the first i The adjustment amount of the signal limiting device i It is 1 or 2. For the first i The vertical height of the phase center of each antenna from the ground. For the first i The horizontal distance from the phase center of each antenna to the vertical plane of the signal limiting device To cover the boundary points of the target to the th i The horizontal distance between the ground projection points of the antenna phase centers k The efficiency coefficient for satellite positioning signal obstruction. The vertical half-power angle of the satellite positioning signal.
[0048] Optionally, the processing module 63 is also specifically used for: Based on the first adjustment amount, the vertical length of the obstruction surface adjacent to the target coverage boundary point in the first signal limiting device is adjusted to obtain the first target coverage area after adjustment by the first satellite constellation simulator.
[0049] Optionally, the satellite positioning signal coverage area determination device 60 further includes: The determination module 64 is used to perform boundary detection processing on the adjusted first target coverage area to obtain a first coverage boundary verification result; perform boundary detection processing on the adjusted second target coverage area to obtain a second coverage boundary verification result; correct the adjustment amount of the first signal limiting device according to the first coverage boundary verification result to obtain a first final coverage area; and correct the adjustment amount of the second signal limiting device according to the second coverage boundary verification result to obtain a second final coverage area.
[0050] It should be noted that this device is a device corresponding to the above method. All implementation methods in the above method embodiments are applicable to this embodiment and can achieve the same technical effect.
[0051] like Figure 7 As shown, this embodiment of the invention also provides a computing device 70, including a processor 71, a memory 72, and a program or instructions stored in the memory 72 and executable on the processor 71. When the program or instructions are executed by the processor 71, they implement the various processes of the above-described method embodiment for determining the coverage area of satellite positioning signals, and achieve the same technical effect. To avoid repetition, they will not be described again here. It should be noted that the computing device in this embodiment of the invention includes the above-described mobile electronic devices and non-mobile electronic devices.
[0052] The above are preferred embodiments of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.
Claims
1. A method for determining the coverage area of a satellite positioning signal, characterized in that, include: Obtain the first fundamental parameters of the first antenna of the first satellite constellation simulator and the second fundamental parameters of the second antenna of the second satellite constellation simulator in multiple side-by-side satellite constellation simulators; Obtain the boundary adjustment parameters of the first target coverage area of the first satellite constellation simulator and the second target coverage area of the second satellite constellation simulator; Based on the first basic parameters and the boundary adjustment parameters, a first adjustment amount of the first signal limiting device of the first satellite constellation simulator is determined; the first signal limiting device is used to adjust the coverage area of the satellite positioning signal of the first antenna. Based on the second basic parameter and the boundary adjustment parameter, a second adjustment amount of the second signal limiting device of the second satellite constellation simulator is determined; the second signal limiting device is used to adjust the coverage area of the satellite positioning signal of the second antenna. The length of the first signal limiting device is adjusted according to the first adjustment amount to obtain the first target coverage area after adjustment by the first satellite constellation simulator; The length of the second signal limiting device is adjusted according to the second adjustment amount to obtain the second target coverage area after adjustment by the second satellite constellation simulator; the second target coverage area is adjacent to the first target coverage area and does not overlap.
2. The method for determining the coverage area of a satellite positioning signal according to claim 1, characterized in that, Obtain the first fundamental parameters of the first antenna of the first satellite constellation simulator and the second fundamental parameters of the second antenna of the second satellite constellation simulator in multiple side-by-side satellite constellation simulators, including: The parameters of the first and second antennas of adjacent first satellite constellation simulators in multiple side-by-side satellite constellation simulators are measured to obtain the basic parameters of the first and second antennas. The basic parameters of the first and second antennas include the vertical height of the phase center of the first and second antennas from the ground, the horizontal distance of the phase center of the first antenna from the vertical plane of the first signal limiting device, the horizontal distance of the phase center of the second antenna from the vertical plane of the second signal limiting device, the satellite positioning signal blocking efficiency coefficient, and the vertical half-power angle of the satellite positioning signal.
3. The method for determining the coverage area of a satellite positioning signal according to claim 1, characterized in that, Obtain the boundary adjustment parameters for the first target coverage area of the first satellite constellation simulator and the second target coverage area of the second satellite constellation simulator, including: Obtain network coverage requirement data for multiple satellite constellation simulators arranged side by side; Based on the network coverage requirement data, determine the coordinates of the boundary points of the first target coverage area of the first satellite constellation simulator and the second target coverage area of the second satellite constellation simulator. Based on the coordinates of the boundary point, the horizontal distance from the boundary point to the ground projection point of the phase center of the first antenna and the second antenna is measured to obtain the boundary adjustment parameters.
4. The method for determining the coverage area of a satellite positioning signal according to claim 3, characterized in that, Based on the first basic parameters and boundary adjustment parameters, determine the first adjustment amount of the first signal limiting device of the first satellite constellation simulator, including: The basic parameters of the first antenna and the boundary adjustment parameters are processed by the input signal blocking boundary determination model to obtain the adjustment amount of the first signal limiting device.
5. The method for determining the coverage area of a satellite positioning signal according to claim 4, characterized in that, The signal obstruction boundary determination model is as follows: ； in, For the first i The adjustment amount of the signal limiting device i It is 1 or 2. For the first i The vertical height of the phase center of each antenna from the ground. For the first i The horizontal distance from the phase center of each antenna to the vertical plane of the signal limiting device To cover the boundary points of the target to the th i The horizontal distance between the ground projection points of the antenna phase centers k The efficiency coefficient for satellite positioning signal obstruction. The vertical half-power angle of the satellite positioning signal.
6. The method for determining the coverage area of a satellite positioning signal according to claim 4, characterized in that, The length of the first signal limiting device is adjusted according to the first adjustment amount to obtain the first target coverage area after adjustment by the first satellite constellation simulator, including: Based on the first adjustment amount, the vertical length of the obstruction surface adjacent to the target coverage boundary point in the first signal limiting device is adjusted to obtain the first target coverage area after adjustment by the first satellite constellation simulator.
7. The method for determining the coverage area of a satellite positioning signal according to claim 1, characterized in that, Also includes: Boundary detection processing is performed on the adjusted first target coverage area to obtain the first coverage boundary verification result; Boundary detection processing is performed on the adjusted second target coverage area to obtain the second coverage boundary verification result; Based on the first coverage boundary verification result, the adjustment amount of the first signal limiting device is corrected to obtain the first final coverage area; Based on the second coverage boundary verification result, the adjustment amount of the second signal limiting device is corrected to obtain the second final coverage area.
8. A device for determining the coverage area of a satellite positioning signal, characterized in that, include: The first acquisition module is used to acquire the first basic parameters of the first antenna of the first satellite constellation simulator and the second basic parameters of the second antenna of the second satellite constellation simulator in a plurality of satellite constellation simulators arranged side by side. The second acquisition module is used to acquire the boundary adjustment parameters of the first target coverage area of the first satellite constellation simulator and the second target coverage area of the second satellite constellation simulator. The processing module is used to determine the first adjustment amount of the first signal limiting device of the first satellite constellation simulator based on the first basic parameters and the boundary adjustment parameters; The first signal limiting device is used to adjust the coverage area of the satellite positioning signal of the first antenna; based on the second basic parameters and boundary adjustment parameters, the second adjustment amount of the second signal limiting device of the second satellite constellation simulator is determined; the second signal limiting device is used to adjust the coverage area of the satellite positioning signal of the second antenna; the length of the first signal limiting device is adjusted according to the first adjustment amount to obtain the first target coverage area adjusted by the first satellite constellation simulator; the length of the second signal limiting device is adjusted according to the second adjustment amount to obtain the second target coverage area adjusted by the second satellite constellation simulator. The coverage area of the second target is adjacent to and does not overlap with the coverage area of the first target.
9. A computing device, characterized in that, include: A processor, a memory storing a computer program, wherein the computer program, when executed by the processor, performs the method as described in any one of claims 1 to 7.
10. A computer-readable storage medium, characterized in that, The system stores instructions that, when executed on a computer, cause the computer to perform the method as described in any one of claims 1 to 7.