Fingerprint database generation method and device, computer equipment and storage medium
A fingerprint library and fingerprint technology, applied in the field of wireless communication, can solve the problem of high deployment cost of the overall positioning system, achieve the effect of balancing deployment cost and positioning performance, and ensuring robustness
Pending Publication Date: 2021-11-05
SHANGHAI PUDONG DEVELOPMENT BANK
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However, since the performance of a fingerprint-based positioning system depends on the density of the fingerprint library, the higher the density of the fingerprint library, the higher the positioning accuracy, and the higher the density of the fingerprint library, the higher the deployment cost of the overall positioning system. Therefore, how to maintain the fingerprint library The balance between deployment cost and positioning accuracy is imminent
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[0067] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.
[0068] In related technologies, the UWB positioning system based on dense fingerprint library (sampling point interval ≤ 2m) has high accuracy, and the average positioning error is stable below 0.82m, but its fingerprint data collection cost is too high, which is not suitable for large-scale deployment. The UWB positioning system based on the sparse fingerprint library (sampling point interval ≥ 5m) has low accuracy, with a maximum error of more than 17m, which does not meet the performance expectations of UWB signal high-precision positioning. Therefore, the performance o...
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The invention relates to a fingerprint database generation method and device, computer equipment and a storage medium. The method comprises the following steps: acquiring first real fingerprint data for a target area; detecting the target area to obtain multiple positioning coordinates, and inputting the multiple positioning coordinates into a pre-trained deep fingerprint generation model to obtain virtual fingerprint data respectively corresponding to the multiple positioning coordinates, wherein the virtual fingerprint data is predicted signal flight time of UWB signals at the positioning coordinates, and the deep fingerprint generation model is trained by using the first real fingerprint data and second real fingerprint data in the target area; and according to the real fingerprint data and the virtual fingerprint data, generating a high-density fingerprint database. According to the invention, the problems that the deployment efficiency of the high-density fingerprint database is low and a deployment process is tedious are solved, the deployment cost and the positioning performance of a system are balanced, and the robustness of the positioning system applying the fingerprint database is ensured.
Description
technical field [0001] The present application relates to the technical field of wireless communication, in particular to a method, device, computer equipment and storage medium for generating a fingerprint library. Background technique [0002] In a large-scale indoor scene, users will need real-time positioning and real-time navigation, and because the indoor scene is blocked by multi-layer floors, users cannot use the map software based on the Global Positioning System (Global Positioning System, GPS) signal to accurately identify the location , so the method of using signals other than GPS signals to realize the generation of fingerprint library also appears. [0003] In related technologies, a fingerprint library is usually constructed by using Ultra Wide Band (UWB) signals and signal time-of-flight, and indoor centimeter-level positioning within a short distance is realized according to the fingerprint library, that is, a fingerprint-based positioning system realizes i...
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IPC IPC(8): G06F16/21G06N3/04G06N3/08
CPCG06F16/21G06N3/08G06N3/047G06N3/045
Inventor 袁昊吴梓祺杨欣捷张琛万化
Owner SHANGHAI PUDONG DEVELOPMENT BANK