4 results about "Spherical array" patented technology

This invention belongs to the field of spherical array layout design, and discloses a broadband high-gain spherical array layout method based on co-frame design, according to the upper limit f of the operating frequency of the closely packed spherical array. max Calculate the approximate element spacing d0 = (c / f max Step 2: Based on the array space, calculate the maximum diameter R, vertical height H, and vertical arc length L of the spherical array. H This invention addresses the problem of insufficient low-frequency gain caused by the limited installation space of spherical arrays. By using a design that combines a vector sparse spherical array with a scalar close-packed conformal array, it achieves high low-frequency gain, enabling it to have broadband high array gain with only a slight increase in the number of preprocessing channels, thus meeting the requirements for full-band detection.

This invention discloses an asynchronous measurement technique for 3D imaging of multi-point, non-planar low-frequency sound sources. It utilizes two 64-channel 3D spherical arrays for asynchronous measurement, proposing a unique dual-cylindrical spiral ascent and rotation movement method to achieve 3D point source imaging within low-frequency sound sources. This method differs from previous directional methods. It employs an asynchronous measurement technique involving the centers of two spherical arrays following a designed dual-cylindrical spiral parallel ascent trajectory and the array's rotation, applied to 3D imaging of multi-point, non-planar low-frequency sound sources. This results in a larger and denser array. To a certain extent, the asynchronous measurement method combining the dual-cylindrical spiral trajectory and rotation further improves the density of synthesized microphones compared to cylindrical trajectory asynchronous measurement methods and spherical array center revolution-rotation asynchronous measurement methods. The method is stable and efficient.

The invention discloses a multi-sensor efficient integration verification method, system and device based on multiple phase centers and a medium, and relates to the field of radio frequency sensor dynamic integration verification. Aiming at the defect that a single-phase center of a traditional darkroom cannot verify multiple sensors at the same time, multiple phase centers in the same airspace are constructed in the darkroom based on a multi-band triple spherical array radiating antenna, and tested equipment is deployed through multiple synchronously-controlled six-degree-of-freedom motion platforms to ensure attitude consistency; the system master console resolves scene parameters in real time, and high-precision angle and echo simulation is carried out through the array feed control subsystem and the comprehensive signal source; cooperative verification of electronic reconnaissance interception guide radar tracking and radar tracking guide attribute identification is realized in a closed loop. According to the method, the physical space limitation of a darkroom is broken through, a complex space three-dimensional dynamic interaction scene is reproduced with high confidence, and the blank of complete machine multi-sensor cooperative capability integrated verification is filled.

The application discloses a multi-sensor efficient integration verification method, system, device and medium based on multiple phase centers, relates to the field of radio frequency sensor dynamic integration verification, and aims at the defect that a traditional darkroom single phase center cannot verify multiple sensors simultaneously, constructs multiple phase centers based on a multi-band triplet spherical array radiation antenna in the darkroom, deploys a test device through multiple six-degree-of-freedom motion tables to ensure attitude consistency, and realizes the cooperative verification of electronic reconnaissance interception guiding radar tracking and radar tracking guiding attribute identification in a closed loop. The application breaks through the limitation of the physical space of the darkroom, reproduces a complex spatial three-dimensional dynamic interaction scene with high confidence, and fills the gap of the integration verification of the cooperative capability of the whole machine multiple sensors.