5results about How to "Improve SINR" patented technology

This invention discloses a radar target angle measurement method under main lobe interference based on a joint air-pole cancellation algorithm. The implementation steps are as follows: receiving the echo signal from a dual-polarized radar antenna array; estimating the autocorrelation matrix of the auxiliary antenna using the echo signal; performing multi-directional beamforming on the main antenna echo signal, calculating the cross-correlation matrix of the main and auxiliary antennas using the beamforming results, and calculating adaptive weights using the minimum mean square error criterion; calculating the joint air-pole cancellation output using the adaptive weights, and using the scanning angle corresponding to the maximum magnitude in the joint air-pole cancellation output as the target angle estimate. The angle measurement method designed in this invention significantly improves the accuracy of target angle estimation while maintaining low computational load under main lobe interference conditions, and has high engineering application value.

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.

The application discloses a kind of for speed fuzzy target robust detection under clutter background transceiver design method, comprising the following steps: S1, intra-pulse inter-pulse parameter agile waveform component analysis;S2, intra-pulse inter-pulse waveform dependent airborne radar echo modeling;S3, the modeling of speed fuzzy target robust detection problem based on cognitive information;S4, transmission and Doppler filter bank robust joint design problem solution.The application proposes a kind of for speed fuzzy target robust detection under clutter background transceiver joint design method, based on block enhancement, principal component minimization and sequence convex approximation etc. Non-convex optimization method, efficient configuration intra-pulse inter-pulse waveform amplitude, phase and timing etc. Parameters and Doppler filter bank coefficient, maximize the worst signal-to-interference-and-noise ratio of speed fuzzy target, realize the robust detection of speed fuzzy target under clutter background.

The embodiment of the invention provides a communication perception integrated game anti-interference method and device, equipment and a medium. The invention relates to the technical field of signal transmission. The method comprises the following steps: acquiring to-be-sent information needing to be sent to a user side by a base station; obtaining the target beam forming of the base station, the target trajectory of the unmanned aerial vehicle and the target beam forming of the unmanned aerial vehicle; sending the information to be sent to the user side based on the base station according to the target beam forming of the base station; and sending the to-be-sent information to the user side based on the unmanned aerial vehicle according to the target trajectory of the unmanned aerial vehicle and the target beam forming of the unmanned aerial vehicle. The method is used for achieving the technical effect of improving the transmission quality of signal transmission.