8 results about "Overlap zone" patented technology

The invention discloses a multi-port-based tag anti-serial-reading identification method and device, a medium and a product, and relates to the field of data processing. The method comprises the following steps: by taking minimization of a signal radiation overlapping region between antennas as a target, adjusting real-time transmitting power of a plurality of antenna ports; after the antenna ports transmit detection signals at the real-time transmitting power, backscattering signals returned by the read tag are obtained through the antenna ports; according to the feature data of the backscattering signal, determining a key feature for judging the affiliation of the read tag; based on the key features, calculating the posterior probability of each antenna port to which the tag belongs through a Bayesian probability framework; and determining the antenna port with the maximum median value of the posterior probabilities as the attribution port corresponding to the tag. The problem of label serial reading can be relieved under the condition that the label reading rate is guaranteed.

The application provides a kind of multi-beam coherent high reliability combination method, device, electronic equipment and storage medium, it relates to satellite communication technical field, the method comprises: the multi-channel signal of satellite retransmission is received coherently, multi-channel signal is BPSK symbol sequence after direct sequence spread spectrum modulation, in beam overlap area through multiple different beams equal gain is sent to the satellite;Based on cross-entropy optimization algorithm, the normalized channel gain corresponding to each multi-channel beam is jointly optimized, and the optimal normalized channel gain corresponding to each beam is obtained;Based on the optimal normalized channel gain corresponding to each beam, the weighted and combined multi-channel signal after despreading is obtained, and the combined signal is obtained.The application realizes the adaptive maximum ratio combination of multi-channel signal, can significantly improve the signal-to-noise ratio after signal combination, so that the communication system can still maintain high communication quality in weak channel environment, enhance the anti-interference ability and concealment of system, improve the reliability of link.

Provided in the present application are a communication method, an apparatus and a storage medium, which can effectively reduce co-channel interference at a terminal side. The method comprises: when a ground coverage area of a relay apparatus and a ground coverage area of a network device have an overlap area, determining a target forwarding radius of the relay apparatus on the basis of a first CP length and / or a threshold of a first frequency offset difference, wherein the first CP length is determined by the network device, the first frequency offset difference is the difference between a frequency offset on a first transmission path and a frequency offset on a second transmission path, the first transmission path comprises a terminal device and the network device, and the second transmission path comprises the terminal device, the network device and the relay apparatus; and the network device sending first information to the relay apparatus, the first information being used to indicate the target forwarding radius.

The invention discloses a space-borne double-antenna interference SAR block adjustment method. The method comprises the steps that a plurality of adjacent unwrapping interferograms and additional data which are produced by a space-borne double-antenna interference SAR in a research area and have overlapped areas are acquired; the method comprises the following steps: acquiring an initial DSM of a radar coordinate system based on a satellite-borne double-antenna interference SAR interference baseline model and phase elevation conversion, and acquiring an initial DSM of a geographic coordinate system through geocoding; calculating the row and column numbers and elevation of the control points in the initial DSM of the radar coordinate system; determining the adjacency relation of each initial DSM, uniformly selecting homonymy points in the overlapping area of the adjacent initial DSM as connection points, and determining the row and column numbers and elevation of the connection points in the initial DSM of the corresponding radar coordinate system; and establishing a block adjustment model based on elevation constraints of the control points and the connection points, carrying out block adjustment correction on the radar coordinate system initial DSM, and obtaining an adjusted geographic coordinate system DSM through geocoding. According to the invention, the precision of an initial DSM product produced by a satellite-borne double-antenna X-band interference SAR system can be further improved.

This invention discloses a satellite routing control and switching method and system, belonging to the field of satellite communication. The satellite routing control and switching method includes the following steps: monitoring satellite signal quality and collecting satellite data to determine whether a node switch is needed. Triggering conditions include: signal quality degradation below a threshold and communication equipment about to leave the current satellite network coverage area. When a node switch is needed, the optimal switching target is selected from candidate nodes, and the signal quality of the optimal switching target is judged. If the signal quality meets the usage requirements, the beneficial effects of this invention compared with the prior art are: when the overlapping area of ​​the coverage edges of multiple satellite networks is too small and the signal quality is judged to be poor, the invention restricts the switching node, prohibiting arbitrary node switching within a set time. Moreover, the set time is adjusted according to the actual situation to match different situations, reducing problems such as communication quality degradation, network resource waste, and increased terminal power consumption.

The invention relates to a wireless communication device (30) comprising a plurality of antennas (42), each antenna (42) having a single loop (44), the antennas (42) of the plurality of antennas being arranged in groups (46) of four antennas (42), the position of each antenna (42) of the same group being deduced by translation from the position of another antenna (42) of the same group (46), each group (46) of four antennas (42) including only five zones of overlap of antennas of the same group (46): a common zone of overlap (ZC) of the four antennas (42) and four zones of overlap (Z1, Z2, Z3, Z4) of two antennas (42).

The invention discloses a multi-core radar target detection method and device based on FT6678. The method comprises the following steps: dividing a radar distance-Doppler two-dimensional matrix into a first region to be processed by a kernel 1 and a second region to be processed by a kernel 2, wherein an overlapping region exists between the first region and the second region; the core 0 adjusts the first area and the second area in real time according to the task queue depths of the core 1 and the core 2; for the first region after the kernel 1 is adjusted and the second region after the kernel 2 is adjusted, the following steps are executed in parallel: a plurality of candidate targets are obtained through Sudoku sliding window CFAR detection, a candidate target list is generated, and the candidate target list comprises distance / Doppler information and peak signal-to-noise ratios of the candidate targets; and determining an effective target in the plurality of candidate targets. According to the embodiment of the invention, the data distribution proportion of the kernel 1 and the kernel 2 is adjusted in real time, the block overlapping region is introduced, cross-kernel joint detection of the boundary target is ensured, and high-precision and low-delay radar target detection can be realized.

The invention provides a multi-beam coherent high-reliability merging method and device, electronic equipment and a storage medium, and relates to the technical field of satellite communication, and the method comprises the steps: carrying out the coherent receiving of a multi-path signal forwarded by a satellite, and carrying out the direct sequence spread spectrum modulation of a BPSK symbol sequence of the multi-path signal, in the wave beam overlapping area, the wave beams are sent to the satellite through equal gains of a plurality of different wave beams; based on a cross entropy optimization algorithm, united optimization is carried out on the normalized channel gains corresponding to the multiple beams, and the optimal normalized channel gain corresponding to each beam is obtained; and on the basis of the optimal normalized channel gain corresponding to each beam, weighting and combining the de-spread multi-path signals to obtain a combined signal. According to the invention, adaptive maximum-ratio combination of multiple paths of signals is realized, and the signal-to-noise ratio after signal combination can be obviously improved, so that a communication system can still maintain relatively high communication quality in a weak channel environment, the anti-interference capability and the concealment of the system are enhanced, and the reliability of a link is improved.