CN-122027767-A - Beidou full-space-time positioning tracking method based on recorder

CN122027767ACN 122027767 ACN122027767 ACN 122027767ACN-122027767-A

Abstract

The invention discloses a Beidou full space-time positioning tracking method based on a recorder, which relates to the technical field of Beidou recorders and Beidou camera monitoring and controlling, and comprises the steps of analyzing an encrypted data packet from the recorder to obtain geographic position coordinates; the method comprises the steps of taking geographical position coordinates as a center, taking a preset distance as a radius, generating a control ring, retrieving video acquisition nodes in the coverage area of the control ring, sending relay tracking instructions to the video acquisition nodes, enabling the video acquisition nodes to point to the geographical position coordinates and record videos to obtain video data streams, identifying the video data streams, acquiring position coordinate streams of tracking targets when the tracking targets are identified, associating the video data streams, the position coordinate streams and time stamps in the video data streams to obtain track indexes of the tracking targets, and completing positioning tracking. According to the invention, beidou is used as a unified space-time reference, active continuous positioning and tracking of the target in a complex environment are realized, and the positioning efficiency and the positioning safety are improved.

Inventors

WANG CHUAN
LI ZIJIAN
YAO ZURONG
CHENG JIAN
SUN JIAN
HAN SHAOWEI

Assignees

武汉梦芯科技有限公司
武汉市公安局武汉东湖新技术开发区分局

Dates

Publication Date: 20260512
Application Date: 20251216

Claims (10)

1. The Beidou full space-time positioning tracking method based on the recorder is characterized by comprising the following steps of: S1, receiving an encrypted data packet from a recorder, and analyzing the encrypted data packet to obtain geographic position coordinates; s2, generating a control ring by taking the geographic position coordinates as the center and taking a preset distance as a radius; S3, issuing a relay tracking instruction to the video acquisition node, enabling the video acquisition node to point to the geographic position coordinates and starting video recording to obtain a video data stream; s4, identifying the video data stream, and acquiring a position coordinate stream of the tracking target when the tracking target is identified; And S5, correlating the video data stream, the position coordinate stream and the time stamp in the video data stream to obtain the track index of the tracking target, and completing positioning tracking.
2. The recorder-based Beidou full space-time positioning tracking method of claim 1, wherein the encrypted data packet comprises position information and a state identifier; the position information is obtained through continuous positioning of a Beidou positioning module arranged in the recorder and is used for determining the spatial position of the recorder in a geographic coordinate system and used as a central datum point for generating the control ring; The position information comprises date, time, longitude, latitude, altitude, satellite number, double-antenna distance, speed and error factors; The status identifier is used for identifying whether the recorder is in an emergency state.
3. The recorder-based Beidou full-space-time positioning tracking method is characterized in that the video acquisition node comprises a Beidou camera, an unmanned aerial vehicle and a vehicle-mounted cradle head; the Beidou camera, the unmanned aerial vehicle and the vehicle-mounted cradle head are all internally provided with Beidou positioning modules.
4. The recorder-based Beidou full space-time positioning tracking method of claim 1, wherein the video acquisition nodes are provided with gesture information, and the gesture information is used for describing a space pointing state of the video acquisition nodes; when the video acquisition node receives the relay tracking instruction, adjusting the lens direction of the video acquisition node based on the gesture information; the attitude information comprises pitch angle, roll angle, direction angle and magnification.
5. The Beidou full-time space positioning and tracking system based on the recorder is characterized by comprising a receiving and analyzing module, an anti-control ring generating module, an instruction issuing module, a target identification module and a data association module; the receiving and analyzing module is used for receiving the encrypted data packet from the recorder and analyzing the encrypted data packet to obtain geographic position coordinates; The control ring generation module is used for generating a control ring by taking the geographic position coordinates as the center and taking a preset distance as a radius; the command issuing module is used for issuing a relay tracking command to the video acquisition node, so that the video acquisition node points to the geographic position coordinates and starts video recording to obtain a video data stream; The target recognition module is used for recognizing the video data stream, and when a tracking target is recognized, a position coordinate stream of the tracking target is obtained; And the data association module is used for associating the video data stream, the position coordinate stream and the time stamp in the video data stream to obtain the track index of the tracking target and finish positioning tracking.
6. The recorder-based Beidou full-time space positioning and tracking system of claim 5, wherein the encrypted data packet comprises position information and a state identifier; the position information is obtained through continuous positioning of a Beidou positioning module arranged in the recorder and is used for determining the spatial position of the recorder in a geographic coordinate system and used as a central datum point for generating the control ring; The position information comprises date, time, longitude, latitude, altitude, satellite number, double-antenna distance, speed and error factors; The status identifier is used for identifying whether the recorder is in an emergency state.
7. The recorder-based Beidou full-time space positioning and tracking system of claim 5, wherein the video acquisition node comprises a Beidou camera, an unmanned aerial vehicle and a vehicle-mounted cradle head; the Beidou camera, the unmanned aerial vehicle and the vehicle-mounted cradle head are all internally provided with Beidou positioning modules.
8. The recorder-based Beidou full-time space positioning and tracking system of claim 5, wherein the video acquisition node has gesture information for describing a spatial pointing state of the video acquisition node; when the video acquisition node receives the relay tracking instruction, adjusting the lens direction of the video acquisition node based on the gesture information; the attitude information comprises pitch angle, roll angle, direction angle and magnification.
9. A computer device, characterized in that it comprises a processor coupled to a memory, in which at least one computer program is stored, which is loaded and executed by the processor, so that the computer device implements a recorder-based Beidou full space-time positioning tracking method according to any one of claims 1 to 4.
10. A computer readable storage medium, wherein at least one computer program is stored in the computer readable storage medium, and the at least one computer program is loaded and executed by a processor, so that a computer implements a beidou all-time positioning and tracking method based on a recorder according to any one of claims 1 to 4.

Description

Beidou full-space-time positioning tracking method based on recorder Technical Field The invention relates to the technical fields of Beidou recorder and Beidou camera monitoring, in particular to a Beidou full space-time positioning tracking method based on a recorder. Background Along with the deepening of the construction of social development, the demands of all-time continuous positioning and tracking of moving targets in various fields are increasingly urgent. The dynamic monitoring of the target needs to establish an accurate association model among equipment, the target and space time, so as to realize relay tracking across the field of view of the equipment and automatic solidification of the evidence chain. Particularly in the complex urban environment, dense building groups or the scene of serious electromagnetic interference, the recorder and the monitoring equipment must provide high reliability, high anti-interference and autonomous controllable positioning capability, and support second-level response and multi-node cooperative scheduling. The Beidou satellite navigation system is used as an independently-operated and independently-controllable satellite navigation system, and can provide high-precision and high-reliability positioning, navigation and time service for various industries all over the world and all weather. The Beidou positioning chip, the Beidou positioning module and other positioning terminals are used as core devices of the Beidou positioning system, and play an important role in the positioning implementation process. In contrast, the current recorder and video monitoring equipment mainly rely on a GPS single-mode positioning scheme, acquire self geographic position information of the equipment through a built-in GPS receiving module, and transmit position data back to a monitoring platform. The existing platform generally realizes the functions of position information storage, historical track playback and basic electronic map display, and part of the system supports target tracking and post track analysis based on a single device field of view. The recorder is commonly provided with an emergency alarm button, an alarm signal carrying geographic position coordinates can be sent to the platform after triggering, and the platform completes police dispatch according to preset rules. The prior art described above has significant drawbacks. The GPS single-mode positioning scheme faces the risks of intervention and signal shutdown, has fundamental hidden danger on safety and controllability, and cannot meet the autonomous controllable requirement. Under the shielding environment, the GPS positioning precision is seriously reduced or even fails, so that the track drift and the data interruption are caused. In the prior art, the three-dimensional space-time correlation model among a recorder, a camera and a tracking target cannot be constructed by depending on the position data of the equipment, and trace fragments are generated when the target is photographed by a plurality of equipment in relay, so that space-time dimension is fractured. The traditional tracking platform only supports passive position feedback and post analysis, lacks active continuity tracking capability for key targets, relies on manual switching of monitoring nodes after the targets are separated from a single device field of view, has serious delay of dynamic response, and cannot form a cross-device cooperative treatment mechanism. In summary, the existing positioning and tracking technology has obvious defects in the aspects of autonomous controllability, environmental adaptability, cross-device coordination and active tracking capability, and is difficult to meet urgent requirements of high safety, high reliability and high efficiency full space-time positioning and tracking. Disclosure of Invention Aiming at the defects of the prior art, the invention particularly aims at the problems of fragmented tracking target track, low safety and response lag caused by the fact that the existing positioning and tracking technology relies on GPS single-mode positioning, lacks of equipment-target-space-time ternary association and cross-equipment relay shooting, and particularly provides a Beidou full-space-time positioning and tracking method based on a recorder, which comprises the following steps: 1) In a first aspect, the invention provides a Beidou full space-time positioning tracking method based on a recorder, which comprises the following specific technical scheme: S1, receiving an encrypted data packet from a recorder, and analyzing the encrypted data packet to obtain geographic position coordinates; s2, generating a control ring by taking the geographic position coordinates as the center and taking a preset distance as a radius; S3, issuing a relay tracking instruction to the video acquisition node, enabling the video acquisition node to point to the geographic position coordinates and starting video record