5results about How to "Reduce system cost" patented technology

This invention discloses a method for restoring turbulent degradation images based on complex amplitude detection, belonging to the field of computational optics imaging technology. This method constructs a computational optics imaging system without a hardware correction unit. It utilizes a wavefront sensor and an imaging sensor to simultaneously acquire Hartmann images and target degradation images. A computational unit performs wavefront complex amplitude reconstruction and aberration correction. Based on this, a physically constrained end-to-end neural network architecture is designed. By reconstructing the wavefront complex amplitude, it achieves accurate mapping and inference from the Hartmann image to the point spread function of the imaging system. Finally, a multi-scale deconvolutional network is combined to complete high-quality restoration of the turbulent degradation image. This invention eliminates the need for a hardware corrector, overcomes the physical limitations of traditional adaptive optics, effectively solves the problem of insufficient point spread function accuracy, and enables time-delay-free and highly efficient turbulent image restoration under low-cost conditions.

The perception-assisted predictive handover method in the high-speed railway tunnel scene of the application belongs to the technical field of wireless communication and intelligent transportation, and the steps include: constructing a bistatic communication and perception integrated architecture, establishing a communication and perception signal model considering double selective channels, deducing a lower bound of Cramer-Rao based on joint time delay-Doppler parameter estimation to establish a perception-assisted location prediction model, designing a three-state predictive handover mechanism based on perception information, and proposing a perception-assisted dual deep Q network algorithm, jointly optimizing handover decision, clamp antenna configuration and power allocation. By integrating perception capability into handover decision, the application realizes predictive switching before signal degradation, significantly improving the handover success rate and communication throughput in the high-speed railway tunnel scene.

This invention relates to the field of communication technology, specifically to a collision detection method and related equipment for ultra-short-range shared medium networks. The method includes: a master node broadcasting downlink messages on a downlink channel, and slave nodes sending uplink messages within a shared uplink contention window; each slave node starting an acknowledgment response timer for each sent uplink message and waiting to receive an acknowledgment message from the master node; the master node performing frame check sequence verification on the received uplink messages, and if a verification error is found, sending a verification error alarm message to the slave node at the corresponding source address; the slave node determining a serious collision when the acknowledgment response timer expires, or determining a collision event when it receives a verification error alarm message; and the slave node executing a backoff strategy based on the collision detection results. This invention enables efficient and reliable collision detection without adding additional hardware receivers, reducing system costs and design complexity, and is suitable for ultra-short-range scenarios such as intra-robot communication.

This invention discloses a high spatiotemporal resolution millimeter-wave radar imaging system, comprising: a U-shaped antenna array module, wherein the transmitting and receiving antennas are symmetrically distributed in a U-shape, with an element spacing greater than or equal to half a wavelength, adapted to the SAR imaging mechanism, and using an electronic scanning scheme to achieve beam scanning; a radio frequency (RF) module, employing a cyclic one-transmit-multiple-receive mode, completing data acquisition for all transmitting and receiving channels by cyclically switching the transmitting elements to ensure high system refresh rate and spatiotemporal resolution; a signal processing module, receiving multi-channel echo signals, rearranging the echo signals, and using a hardware-parallel accelerated time-domain backpropagation (BP) algorithm for imaging; and a control module, using a microcontroller to control the RF chip of the RF module. This invention verifies the applicability of antenna spacing greater than or equal to half a wavelength in near-field SAR imaging mechanisms, overcomes the dependence of traditional MIMO systems on antenna half-wavelength spacing, achieves high spatiotemporal resolution near-field imaging, and reduces system complexity and cost.

The present disclosure discloses a remote device, a system and a method for transmission compatible with two TDD switch signals. The method includes: receiving a downlink TDD switch signal; performing a power-on detection on the downlink TDD switch signal; in the case of a successful power-on detection, generating a standard switch signal corresponding to the downlink TDD switch signal; receiving an information of a successful power-on detection and the standard switch signal; comparing the downlink TDD switch signal with the standard switch signal; in the case that a number of abnormal values between the downlink TDD switch signal and the standard switch signal is less than a set value N, outputting a first downlink switching switch signal, a first uplink switching switch signal, a second downlink switching switch signal, and a second uplink switching switch signal related to the downlink TDD switch signal. The disclosed system having a simple design can detect the switch signal, perform error correction on the wrong switch signal, and ensure the correctness of the switch signal.