2results about How to "Improve SINR" patented technology

This invention discloses a multi-target adaptive jamming system based on an array antenna, belonging to the field of electromagnetic countermeasures and signal processing technology. The system includes an array antenna unit, a multi-channel RF front-end, a signal processing and control unit, and an environmental sensing unit. The array antenna scans the airspace and captures signals from multiple targets; the signal processing and control unit runs various algorithms to estimate the azimuth, frequency, and power parameters of multiple targets; an interference suppression matrix is ​​constructed based on singular value decomposition, generating multiple low-sidelobe focused jamming beams aimed at each target; the environmental sensing unit monitors background noise intensity in real time and dynamically adjusts the transmission power through a noise adaptive power control algorithm. This invention overcomes the shortcomings of traditional jamming techniques, such as energy dispersion, poor environmental adaptability, and unintelligent resource allocation. It can simultaneously achieve efficient and precise jamming of multiple targets, significantly improving the suppression ratio of a single target, and maintaining high jamming efficiency and resource utilization even in high-noise environments.

The invention discloses a livestock raising equipment cooperative control method and system based on wireless communication, relates to the technical field of wireless communication, breaks through the limitation of traditional pure data driven blind separation, and provides a structure constraint type projection method based on RIS asymmetric partitioning. RIS is divided into an auxiliary detection and symbiotic transmission array plane, a known physical reflection coefficient is used as a prior structure and is subjected to forced orthogonal fusion with an SVD decomposition result, and a structure constraint type projection operator is constructed. According to the bypass detection and main path stripping mechanism, channel estimation in advance is not needed, the calculation complexity is low, and strong direct wave interference can be accurately stripped under the conditions of extremely low signal-to-noise ratio and few snapshots. According to the method, the signal to interference plus noise ratio of the weak symbiotic signals is greatly improved, dependence on the number of snapshots is remarkably reduced, the environment subspace can still be stably extracted under the extremely low signal to noise ratio, the error rate platform phenomenon of a traditional method is avoided, the secondary signals are highly reliably recovered, and accurate cooperative control over livestock raising equipment is guaranteed.