JP-2026075258-A - Positioning device, positioning method, and computer program

Abstract

[Problem] To provide a positioning device, etc., that can pinpoint the location of the source of interfering radio waves with higher precision. [Solution] A positioning device comprising: determination means for determining whether a radio wave signal from a radio wave source is an interfering radio wave that interferes with communication; search range setting means for identifying the estimated location of the radio wave source of the radio wave signal determined to be an interfering radio wave, and setting a search range for the radio wave source based on the prediction error of the estimated location using the estimated location as a reference point; satellite image acquisition means for acquiring satellite images of the search range; candidate location identification means for identifying radio wave signal transmission equipment on the satellite images as candidate locations for the radio wave source; and output means for outputting output information including information indicating the identified candidate locations. [Selection Diagram] Figure 12

Inventors

• 大星 旭弘
• 堺 淳
• 河野 健司
• 大塚　雅仁

Assignees

• 日本電気株式会社

Dates

Publication Date

20260508

Application Date

20241022

Claims (10)

1. A determination means for determining whether a radio signal from a radio wave source is an interfering radio wave that interferes with communication, A search range setting means for identifying the estimated location of the radio wave source of the radio wave signal determined to be an interfering radio wave, and setting a search range for the radio wave source based on the prediction error of the estimated location, using the estimated location as a reference point. A satellite image acquisition means for acquiring satellite images of the aforementioned search area, A candidate location identification means for identifying a radio signal transmission facility on the satellite image as a candidate location for a radio signal source, Output means that outputs output information including information indicating the identified candidate location, A positioning device equipped with the following features.
2. The positioning device according to claim 1, wherein the output information includes information indicating the location of the candidate point.
3. The positioning device according to claim 2, wherein the output information further includes the characteristics of the radio signal determined to be an interfering radio wave, and the date and time on which the radio signal determined to be an interfering radio wave was received.
4. The positioning device according to claim 1, wherein the satellite imagery includes optical satellite imagery and SAR (Synthetic Aperture Radar) imagery.
5. The candidate location identification means identifies the candidate location by inputting the satellite image into a trained model that outputs the location of the candidate location when an image is input. The aforementioned trained model is trained using images of radio signal transmission equipment as training data. The positioning device according to claim 1, wherein the transmitting equipment includes at least one of a parabolic antenna, a beamforming antenna, or a radome.
6. The system further comprises signal characteristic analysis means for determining the main lobe and side lobes of the aforementioned radio wave signal, The search range setting means is For each of the main lobe and the side lobe, the estimated position is determined. For each of the aforementioned estimated positions, an error range is set based on the prediction error. The positioning device according to claim 1, wherein the region where each of the aforementioned error ranges overlap is set as the search range.
7. If there are multiple candidate locations, the system further provides a probability calculation means for each of the candidate locations to calculate the probability that the candidate location is a radio wave source. The accuracy calculation means calculates the accuracy by comparing the radio wave characteristics of the radio wave signals that can be transmitted by the candidate location radio wave signal transmission equipment with the radio wave characteristics of the received radio wave signals. The positioning device according to claim 1, wherein the output information includes a list of multiple candidate locations rearranged according to the accuracy.
8. If there are multiple candidate locations, The candidate location identification means calculates the distance from the estimated location to the candidate location, The positioning device according to claim 1, wherein the output information includes a list of multiple candidate locations arranged according to the distance.
9. Computers Determine whether the radio signal from the radio wave source is an interfering radio wave that interferes with communications. The estimated location of the source of the radio wave signal determined to be the aforementioned interfering radio wave is identified. Using the aforementioned estimated position as a reference point, the search range for the radio wave source is set based on the prediction error of the said estimated position. Obtain satellite images of the aforementioned search area, The radio signal transmission equipment on the aforementioned satellite image is identified as a candidate location for the radio wave source. A positioning method that outputs output information including information indicating the identified candidate location.
10. On the computer, A process to determine whether the radio signal from the radio wave source is an interfering radio wave that interferes with communications, The process involves identifying the estimated location of the radio wave source of the radio wave signal determined to be an interfering radio wave, and using the estimated location as a reference point to set a search range for the radio wave source based on the prediction error of the estimated location. The process of acquiring satellite images within the aforementioned search area, The process involves identifying the radio signal transmission equipment on the aforementioned satellite image as a candidate location for a radio signal source, A computer program that performs a process to output output information including information indicating the identified candidate locations.

Description

This disclosure relates to a positioning device, a positioning method, and a computer program. Techniques for estimating the location of the source of interference radio waves transmitted from the Earth towards space are known. For example, as described in Patent Document 1, techniques for estimating the location of radio wave sources include the AOA (Angle of Arrival) method, the POA (Power of Arrival) method, and the TDOA (Time Difference of Arrival) method. International Publication No. 2023/175918 This is a conceptual diagram illustrating the positioning system described in this disclosure.This block diagram shows an example of the configuration of the positioning system in this disclosure.This diagram is intended to explain the setting of the search scope in this disclosure.This diagram illustrates the procedure by which the radio wave source identification unit identifies candidate locations for radio wave sources in this disclosure.This figure shows an example of the output information in this disclosure.This is a flowchart illustrating an example of the operation of the positioning device in this disclosure.This block diagram shows an example of the configuration of the positioning system in this disclosure.This block diagram shows an example of the configuration of the positioning system in this disclosure.This is a flowchart illustrating an example of the operation of the positioning device in this disclosure.This block diagram shows an example of the configuration of the positioning system in this disclosure.This is a flowchart illustrating an example of the operation of the positioning device in this disclosure.This block diagram shows an example of the configuration of a positioning device in this disclosure.This is a flowchart illustrating an example of the operation of the positioning device in this disclosure.This figure shows an example of a hardware configuration in which the positioning device described in this disclosure is implemented using a computer device including a processor. The embodiments described below will be explained in detail with reference to the drawings. While the embodiments described below have technically preferred limitations for carrying out the disclosure, they do not limit the scope of the invention. In all the drawings used in the description of the embodiments below, similar parts are denoted by the same reference numerals unless otherwise specified. In the embodiments below, similar configurations and operations may be omitted from repeated explanations. (First Embodiment) First, the positioning system in the first embodiment will be described with reference to Figures 1 and 2. Figure 1 is a conceptual diagram for illustrating the positioning system in this disclosure. Figure 2 is a block diagram showing an example of the configuration of the positioning system in this disclosure. The positioning system 1 has a plurality of satellite devices and a positioning device 10. In Figure 1, the number of satellite devices included in the positioning system 1 is shown as three (satellite devices 70-1, 70-2, 70-3), but this is just an example. The number of satellite devices 70 included in the positioning system 1 can be two or more. In the following description, when it is not necessary to distinguish between the plurality of satellite devices, they will be referred to as satellite device 70. Each of the satellite devices 70 receives radio signals transmitted from a radio wave source X. If the radio signals transmitted from the radio wave source X are interfering radio waves that affect the communication of the satellite device 60, the positioning system 1 identifies the location of the radio wave source X of the interfering radio waves. Each satellite device 70 comprises a receiving unit 71 and a transmitting unit 72. The receiving unit 71 receives radio signals transmitted from the radio source X. The transmitting unit 72 transmits the received radio signals to the positioning device. (composition) The positioning device 10 is implemented by an information processing device. In this embodiment, the positioning device 10 is assumed to be an information processing device installed on a satellite communication facility on the ground that can communicate with each of the satellite devices 70, but this is just one example for illustrative purposes. The positioning device 10 may also be implemented by satellite devices, and the configuration of the positioning system in this case will be described later. The positioning device 10 includes a receiving unit 11, a determination unit 12, a search range setting unit 13, a satellite image acquisition unit 14, a candidate location identification unit 15, and an output unit 16. The receiving unit 11 receives radio wave signals from the radio wave source X via each satellite device 70. The receiving unit 11 includes an antenna for receiving radio wave signals from the satellite devices 70 and a receiving circuit for converting the