Captive balloon-based frequency spectrum monitoring and unmanned aerial vehicle triangulation positioning method

Abstract

The invention provides a frequency spectrum monitoring and unmanned aerial vehicle triangulation positioning method based on captive balloons, and relates to the technical field of wading aviation, and the method comprises the steps: deploying the captive balloons at multiple points in the sky, arranging a control center on the ground, carrying a frequency spectrum monitoring system and triangulation positioning equipment on each balloon, and enabling the balloons to be in communication connection with the control center. The frequency spectrum monitoring system dynamically monitors multi-band frequency spectrums according to the management and control instruction, collects, manages and analyzes frequency spectrum information and geographical location information and then transmits the information to the management and control center, and the management and control center activates the triangulation positioning equipment to calculate and determine the position of the unmanned aerial vehicle when perceiving an abnormal wave band. According to the method, captive balloon and triangular positioning technologies are fused, accurate frequency spectrum monitoring and accurate unmanned aerial vehicle positioning are realized, the monitoring efficiency can be effectively improved, and the positioning accuracy is enhanced.

Description

Technical Field

[0001] The present invention relates to the field of aviation technology, and in particular to a spectrum monitoring and unmanned aerial vehicle triangulation positioning method based on a tethered balloon. Background Art

[0002] Spectrum monitoring technology is an important technology in the field of radio communications. It is mainly used for wireless spectrum resource management, radio station management, and electromagnetic environment management. Spectrum monitoring systems are usually composed of antennas, radio frequency modules, signal processing modules, data storage and analysis modules, etc. It can capture signals in different frequency bands, process and analyze them, and obtain information such as spectrum occupancy, signal strength, and signal type. This information is of great significance for the planning and optimization of radio communication systems and the rational allocation of spectrum resources.

[0003] Triangulation positioning technology is a positioning method based on geometric principles. It uses two or more detectors to detect the target's direction at different locations, and then uses triangulation geometry principles to determine the target's position and distance.

[0004] Tethered balloons can be used as point-suspended equipment, with only a small number of high-frequency heads, direct control devices and equipment for sensing the direction of the antenna on the platform. Most of the processing equipment can be placed on the ground, forming an air-ground combined detection equipment, which is suitable for observing long-range targets at low or ultra-low altitudes. It can also form a comprehensive system of active and passive detection combined with radar, optoelectronics, radio detection and some military communication functions, making full use of its commanding position to form an integrated and complementary detection system.

[0005] Currently, a single solution is not accurate in detecting the location and altitude of drones. Summary of the invention

[0006] The purpose of the present invention is to provide a spectrum monitoring and UAV triangulation positioning method based on a tethered balloon to solve the technical problem of inaccurate positioning existing in the prior art.

[0007] In order to solve the above problems, the present invention relates to a spectrum monitoring and UAV triangulation positioning method based on a tethered balloon, which adopts the following technical solutions: The present invention provides a spectrum monitoring and unmanned aerial vehicle triangulation positioning method based on a tethered balloon, comprising: a. At least three tethered balloons are set up and deployed in the sky at intervals. A control center is set up on the ground. A spectrum monitoring system and a triangulation positioning device based on time difference positioning technology are deployed on any tethered balloon. Both the spectrum monitoring system and the triangulation positioning device are connected to the control center in communication; b. The spectrum monitoring system receives control instructions from the control center. The spectrum monitoring system dynamically monitors the spectrum usage of different frequency bands according to the instructions, collects spectrum information, manages and analyzes it, and transmits spectrum information and geographic location information to the control center; c. After the control center obtains the abnormal band through the spectrum monitoring system, it activates the triangulation positioning device. Based on the time difference positioning technology, at least three triangulation positioning devices receive the signal sent by the positioning source, and calculate the time difference of the signal reaching each triangulation positioning device, so as to determine the location of the drone.

[0008] Preferably, it also includes a triangulation positioning device arranged on the ground, and the triangulation positioning device deployed on the ground and the triangulation positioning device deployed on the tethered balloon are combined with the angle positioning technology to measure the signal arrival angle to assist in locating the height of the UAV.

[0009] Preferably, the triangulation positioning device is configured as a triangulation positioning instrument.

[0010] Preferably, the spectrum monitoring system includes a broadband antenna, a radio frequency module, a communication module, a GPS positioning module, and a cognitive radio platform. The broadband antenna is electrically connected to the radio frequency module, the broadband antenna is used to capture a wide range of wireless spectrum signals, the radio frequency module receives and processes the signals collected by the broadband antenna, the radio frequency module is electrically connected to the communication module, the communication module is electrically connected to the cognitive radio platform to obtain spectrum data and control instructions, the communication module is communicatively connected to the control center to be responsible for real-time and reliable data transmission, the GPS positioning module is electrically connected to the cognitive radio platform, and the GPS positioning module receives GPS satellite signals to locate the geographical location of the monitoring terminal.

[0011] The beneficial effects of the present invention are as follows: The present invention provides a spectrum monitoring and unmanned aerial vehicle triangulation positioning method based on tethered balloons, which relates to the field of water-related aviation technology. The method includes deploying tethered balloons at multiple points in the sky, setting up a control center on the ground, and each balloon is equipped with a spectrum monitoring system and a triangulation positioning device, and all are connected to the control center for communication. The spectrum monitoring system dynamically monitors multi-band spectrum according to control instructions, collects and manages and analyzes spectrum information and geographic location information, and then transmits it to the control center. When the control center detects abnormal bands, it activates the triangulation positioning device and calculates and determines the position of the unmanned aerial vehicle. This method integrates tethered balloons and triangulation positioning technology to achieve accurate spectrum monitoring and accurate positioning of unmanned aerial vehicles, which can effectively improve monitoring efficiency and enhance positioning accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the following is a brief introduction to the drawings required for use in the embodiment: Figure 1 Constructing diagrams for spectrum monitoring systems on tethered balloons; Figure 2This is a diagram of the structural coordination of the monitoring terminal on the tethered balloon. DETAILED DESCRIPTION

[0013] In order to make the technical purpose, technical solution and beneficial effects of the present invention more clear, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0014] The present invention provides a spectrum monitoring and drone triangulation positioning method based on tethered balloons, which constructs an all-round monitoring layout based on tethered balloons deployed at multiple points in the sky. Specifically, the method includes: There are multiple tethered balloons (defined as multiple as at least three), which are deployed in the sky at intervals. A control center is set up on the ground. A spectrum monitoring system and a triangulation positioning device based on time difference positioning (TDOA) technology are deployed on any tethered balloon. The spectrum monitoring system and the triangulation positioning device are connected to the control center in communication, and the communication method can be wireless communication or wired connection. The control center is the core control hub. It decides the timing and parameter setting of the positioning task based on the analysis results of the spectrum monitoring data, and accurately issues the task instructions to the triangulation positioning device, which responds in real time to activate the positioning function. For example, when suspicious frequency band activities are detected, the control center transmits the positioning instructions to the triangulation positioning device, drives the triangulation positioning device to lock the target, and the triangulation positioning device calculates and processes the received signal data in real time, accurately locates the position and altitude information of the drone, and transmits the data to the control center.

[0015] Specifically: the spectrum monitoring system receives control instructions from the control center, dynamically monitors the spectrum usage of different frequency bands according to the instructions, collects spectrum information, manages and analyzes it, and transmits spectrum information and geographic location information to the control center. The spectrum monitoring system includes a broadband antenna, a radio frequency module, a communication module, a GPS positioning module, and a cognitive radio platform. The broadband antenna is used to capture a wide range of wireless spectrum signals. The broadband antenna is electrically connected to the radio frequency module. The radio frequency module receives and processes the signals collected by the broadband antenna. The radio frequency module is electrically connected to the communication module. The radio frequency module converts analog signals into digital signals and transmits them to the communication module via a link. The communication module is electrically connected to the cognitive radio platform to obtain spectrum data and control instructions. The communication module is connected to the control center to be responsible for real-time and reliable data transmission. The GPS positioning module is electrically connected to the cognitive radio platform. The GPS positioning module receives GPS satellite signals to locate the geographic location of the monitoring terminal (collects its own geographic location information).

[0016] The triangulation device is set as a triangulation device.

[0017] After the control center obtains the abnormal band through the spectrum monitoring system, it activates the triangulation positioning equipment. Based on the time difference positioning technology, it receives the signal sent by the positioning source through at least three triangulation positioning devices deployed in the air, and accurately calculates the time difference of the signal reaching each locator based on the TDOA technology, thereby determining the location of the drone.

[0018] At the same time, it also includes a triangulation positioning device installed on the ground. The triangulation positioning device deployed in the air is networked with the triangulation positioning device on the ground. The triangulation positioning device deployed on the ground and the triangulation positioning device deployed on the tethered balloon are combined with angle positioning technology to measure the signal arrival angle to assist in locating the height of the drone.

[0019] Finally, it should be noted that the above embodiments are only used to illustrate but not limit the technical solutions of the present invention, and any equivalent substitutions of the present invention and any modifications or partial substitutions that do not depart from the spirit and scope of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A spectrum monitoring and UAV triangulation positioning method based on a tethered balloon, characterized in that: The method includes: a. At least three tethered balloons are set up and deployed in the sky at intervals. A control center is set up on the ground. A spectrum monitoring system and a triangulation positioning device based on time difference positioning technology are deployed on any tethered balloon. Both the spectrum monitoring system and the triangulation positioning device are connected to the control center in communication; b. The spectrum monitoring system receives control instructions from the control center. The spectrum monitoring system dynamically monitors the spectrum usage of different frequency bands according to the instructions, collects spectrum information, manages and analyzes it, and transmits spectrum information and geographic location information to the control center; c. After the control center obtains the abnormal band through the spectrum monitoring system, it activates the triangulation positioning device. Based on the time difference positioning technology, at least three triangulation positioning devices receive the signal sent by the positioning source, and calculate the time difference of the signal reaching each triangulation positioning device, so as to determine the location of the drone.

2. The spectrum monitoring and UAV triangulation positioning method based on a tethered balloon according to claim 1, characterized in that: It also includes a triangulation positioning device set up on the ground. By combining the triangulation positioning device deployed on the ground and the triangulation positioning device deployed on the tethered balloon with the angle positioning technology, the signal arrival angle is measured to assist in locating the height of the drone.

3. The spectrum monitoring and UAV triangulation positioning method based on tethered balloon according to claim 2 is characterized in that: The triangulation device is set as a triangulation device.

4. According to the spectrum monitoring and UAV triangulation positioning method based on tethered balloons as described in claim 1, the spectrum monitoring system includes a broadband antenna, a radio frequency module, a communication module, a GPS positioning module, and a cognitive radio platform. The broadband antenna is electrically connected to the radio frequency module, the broadband antenna is used to capture a wide range of wireless spectrum signals, the radio frequency module receives and processes the signals collected by the broadband antenna, the radio frequency module is electrically connected to the communication module, the communication module is electrically connected to the cognitive radio platform to obtain spectrum data and control instructions, the communication module is communicatively connected to the control center to be responsible for real-time and reliable data transmission, the GPS positioning module is electrically connected to the cognitive radio platform, and the GPS positioning module receives GPS satellite signals to locate the geographical location of the monitoring terminal.

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