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Target localization method based on multi-transmission and multi-reception passive multistatic radar under interference environment
ActiveCN120949209BHigh positioning accuracyEfficient use of space diversity gainRadio wave reradiation/reflectionRadarMultistatic radar
This invention discloses a target localization method for multiple-transmitter, multiple-receiver passive multistatic radar under interference conditions. The method includes: acquiring reference channel signals and echo signals and performing signal characterization preprocessing to obtain reference channel signal matrices and echo signal matrices; estimating channel parameters based on the reference channel signal matrices and echo signal matrices using the generalized likelihood ratio principle to construct a DPI-GRLT detector; solving the DPI-GRLT detector and calculating the detection statistics at each grid point to obtain the radar target information estimation result. This invention can maintain high localization accuracy and achieve rapid estimation and resolution of multiple targets even under weak signal conditions. As a target localization method for multiple-transmitter, multiple-receiver passive multistatic radar under interference conditions, this invention can be widely applied in the field of radar target localization technology.
Owner:JIANGYIN LUOKONG TECHNOLOGY CO LTD
A liquid leakage judgment and leakage position positioning system and method
ActiveCN116026538Bquick resolutionNuclear energy generationFluid-tightness measurement using lightFiber gratingsMechanical engineering
The present application relates to a kind of liquid leakage judgment and leakage location positioning system and method, including the broadband light source, spectrum analysis module and fiber coupler respectively connected on optical fiber circulator, fiber coupler is connected multiple groups of liquid leakage monitoring sensor respectively;Liquid leakage monitoring sensor includes at least two groups of fiber collimator arranged horizontally on the same axis, wherein a group of fiber collimator is connected fiber grating, and float is arranged in the direction perpendicular to the axis of two groups of fiber collimator;Broadband light source generates optical signal, and optical signal is sent to fiber collimator by fiber coupler, and the reflection signal generated by fiber grating is acquired by spectrum analysis module;The bottom of float has opening, and the liquid leakage enters the inside of float by opening and pushes it to rise, and the light path between two fiber collimators is shielded, and reflection signal disappears in spectrum analysis module, and the position of liquid leakage monitoring sensor corresponding to disappeared signal is positioned leakage position.
Owner:SHANDONG MICRO SENSOR PHOTONICS LIMITED
Barreled ice cream cabinet convenient to refrigerate
The invention discloses a barreled ice cream cabinet convenient to refrigerate, and belongs to the technical field of refrigeration equipment.The barreled ice cream cabinet convenient to refrigerate comprises a base, the top of the base is fixedly connected with a foaming box body, and the top of the foaming box body is fixedly connected with a foaming table top; a plurality of placing round holes are formed in the top of the foaming table board, barrel covers are arranged in the placing round holes, an inner box is fixedly installed in the foaming box body, and two finned evaporators are fixedly installed at the inner bottom of the inner box. The problem of sanitary dead angles formed by fixed connection of a foaming table board and a box body of a traditional direct-cooling ice cream cabinet is solved, meanwhile, an air duct structure of a refrigerating system is optimized, a fin type evaporator is adopted to be matched with a forced air circulation mode, inner wall frosting is effectively avoided, heat exchange efficiency is improved, and it is ensured that the temperature in the cabinet is evenly distributed; therefore, the storage quality and food safety of the ice cream are guaranteed.
Owner:QINGDAO WANXUNDA ELECTRIC CO LTD
A device for detecting the sealing property of a flue
The utility model discloses a device for smoke flue leakproofness detects, include: detection box, air blower, adjusting assembly, output pipe, connecting hose and smoke generator, be equipped with the partition that divides into smoke generator and air blower and places the chamber of placing chamber of air blower of smoke generator in detection box, the smoke generator is placed in the smoke generator placing chamber, and the air blower is installed in the air blower placing chamber, and air inlet pipe passes through the partition and is connected with the smoke generator, and the output pipe one end is connected with the air outlet pipe of air blower, and the other end passes through the air blower placing chamber side wall and is detachably connected with the connecting hose, and adjusting assembly swing joint is placed in the smoke generator chamber far from the partition one end, in the utility model, through the air blower to the smoke flue in blowing into the smoke that the smoke generator released, through the diffusion of smoke, can discern the leak point of the existence of smoke flue fast, and then complete smoke flue leakproofness detection.
Owner:POWERCHINA MUNICIPAL CONSTR GRP CO LTD
Multifunctional slipcase
ActiveCN224130752UPlay a protective effecteasy to viewBook coversStructural engineeringMechanical engineering
Owner:ZHEJIANG NUOMA STATIONERY CO LTD
Anastomat with misassembly prevention
ActiveCN116509485Bquick resolutionprevent misassemblyDiagnosticsSurgical staplesAnastomosis couplerStructural engineering
The application discloses an anastomat with mistaken assembly prevention function, which comprises a detachably connected nail magazine assembly and a body, the nail magazine assembly comprises a nail magazine inner core pipe, the body is provided with an empty slot for the insertion of the nail magazine inner core pipe, a cutting knife is slidably arranged in the nail magazine inner core pipe, a guide-in sliding block is slidably arranged on the surface of the nail magazine inner core pipe close to the body, a plurality of guide-in extension blocks are arranged on the side of the guide-in sliding block close to the body, the guide-in sliding block is provided with an accommodating slot for accommodating a limiting sliding block, a limiting sliding groove is formed through the nail magazine inner core pipe, the position of the cutting knife corresponds to the middle position of the limiting sliding groove, a limiting bottom sliding block is arranged at the bottom of the limiting sliding block and is slidably connected with the limiting sliding groove, and the limiting bottom sliding block extends into the nail magazine inner core pipe through the limiting sliding groove and corresponds to the cutting knife; a plurality of guide slots are uniformly formed on the end of the body close to the nail magazine inner core pipe. The anastomat can quickly distinguish whether the nail magazine has been fired.
Owner:WUXI BEIEN SURGERY DEVICE CO LTD
Cable branch box
ActiveCN224153923UAchieve breathable heat dissipationRealize insulation protectionElectrical apparatusStructural engineeringElectric cables
The utility model belongs to the technical field of cable boxes, and particularly discloses a cable branch box, which comprises a box body and assembly blocks, the assembly blocks are respectively fixed on two sides outside the box body, a door plate is hinged on the right side of the rear end inside the box body, a lock body is arranged between the left side of the door plate and the box body, and two groups of assembly frames are fixed at the front end of the door plate. A first hole is formed in the assembling frame, and a first bolt is in threaded connection between the first hole and the door plate. According to the utility model, the two groups of assembling frames are fixed at the front end of the door plate by using the bolts through the holes, then the fixing plates are arranged between the adjacent assembling frames by virtue of the brackets, and then the yellow, green, red and basket insulating shells are sequentially arranged in the four groups of fixing plates, so that the requirements of flame retardance, corrosion resistance and aging resistance are met; the cable branch can help people to quickly distinguish the installation position where the cable should be inserted, is convenient to disassemble and assemble, saves the time of an electrician, and solves the problem that the cable branch is inconvenient to install.
Owner:ZHEJIANG ZHULANG ELECTRIC CO LTD
A method for generating paleontological images based on neural networks
This invention discloses a method for generating paleontological images based on neural networks, including acquiring paleontological image datasets and non-paleontological image datasets; preprocessing the paleontological image datasets and non-paleontological image datasets; performing viewpoint image segmentation on the preprocessed paleontological image datasets and non-paleontological image datasets; training a generative adversarial network (GAN) based on the segmentation results; using the trained GAN to generate a first-view image, and then stitching it with a second-view image obtained from the viewpoint image segmentation to generate a new paleontological image. This invention, by performing viewpoint image segmentation on the paleontological image datasets and non-paleontological image datasets and then training a GAN, can generate clear adversarial images while ensuring more complete image information.
Owner:YANGTZE DELTA REGION INST OF UNIV OF ELECTRONICS SCI & TECH OF CHINE (HUZHOU)