4results about How to "Strong invulnerability" patented technology

The invention provides a distributed electromagnetic monitoring system and method for abnormal signal direction finding and positioning. The system comprises a distributed electromagnetic spectrum monitoring subsystem and a GNSS time synchronization system. The distributed electromagnetic spectrum monitoring subsystem comprises a preset number of distributed antennas, a network switch and an operation terminal; the preset number of distributed antennas are distributed at preset positions of a target detection area, and original electromagnetic signals are collected, packaged and then sent to the operation terminal; the network switch provides stable data transmission for the distributed antenna and the operation terminal; the operation terminal is used for processing and analyzing the collected electromagnetic signals, performing instruction configuration on parameters of the whole system, and realizing correlation analysis and direction finding positioning of the signals; and the GNSS time synchronization system is used for realizing the clock synchronization function of the distributed antenna through a preset clock taming method. According to the invention, the accuracy of signal positioning is improved through the high-precision time delay estimation and time synchronization technology.

This invention discloses a multi-agent cooperative control method for cross-domain unmanned swarms across land, sea, air, and space, comprising the following steps: S1: Constructing a decoupling model to separate the complexity of cooperative control along three dimensions: hierarchical, frequency-based, and domain-based; S2: Based on the decoupling model, designing a unified cooperative strategy, which generates personalized control objectives adapted to the dynamics and roles of agents in different dimensions according to a dynamically updated cross-domain cooperative situation map; S3: Introducing an event-triggered distributed reinforcement learning mechanism for each agent, ensuring that the agent triggers only when preset triggering conditions are met. This invention, through a hierarchical-frequency-domain triple decoupling model, separates the extreme complexity of cross-domain cooperation along three orthogonal dimensions: task level, control frequency, and physical space, and defines a standard interface to encapsulate the dynamics of heterogeneous platforms, reducing the complexity of system design and analysis.

The present invention relates to the technical field of positioning or existence detection using reflection or re-radiation of radio waves, and specifically to a low-frequency resonance passive identification method and device for large-scale metal targets at sea, wherein the method comprises: determining the low-frequency resonance detection frequency and channel for detecting large-scale metal targets at sea according to the scale of the large-scale targets at sea, the current ionosphere state and the electromagnetic environment, receiving the low-frequency resonance scattering signal by using a pre-constructed wide-area distributed multi-frequency cooperative receiving system, and performing resonance target identification on the large-scale targets at sea in the frequency domain and the time domain respectively by analysis, and mutually verifying the two identification results to obtain the verification result, and then obtaining the actual identification result of the large-scale metal targets at sea. The embodiment of the present invention can use medium and short wave broadcast transmission signals as metal target resonance detection signals for passive detection, and perform low-frequency resonance passive identification of large-scale metal targets at sea according to the resonance scattering mechanism and the low-frequency resonance scattering identification method.

This invention presents a mobility management method based on a routing advertisement protocol. This method abstracts network devices into two functional entities: access devices and switching devices. Access devices assign user IP addresses, switching devices use dynamic routing protocols to establish a network, and access devices and switching devices use routing advertisement protocols to announce user IP addresses. When a user moves, the access device is switched. The old access device deletes the user's routing information using the routing advertisement protocol, while the new access device adds the user's routing information using the same protocol. The switching device updates the user's route across the entire network using dynamic routing protocols based on the routing advertisement protocol content. Thus, the user can achieve data communication with the network through the new access device. Throughout the user's movement, the user's IP address remains unchanged, ensuring uninterrupted service. This method eliminates the need for data tunneling encapsulation, resulting in higher data processing efficiency.