Millimeter wave time-division frequency modulation marine multi-target detection and anti-collision radar

Abstract

The invention relates to the technical field of radio positioning radar, and is a millimeter-wave time-division frequency modulation marine multi-target detection and anti-collision radar. Set up the ring array of optical medium lens antenna, the DSP scans the beam in an all-round way to warn the target that may collide on the water surface, fully coherently receives / sends the reference signal, time-division timing asynchronous control, water surface camera combined with the speed of the ship and GPS signal MCU control time-division n Channel modulation frequency and waveform millimeter-wave linear phase-locked frequency modulation, transmitted through R / T2, circulator, beam switch, antenna array, and the echo is transmitted through antenna array, beam switch, circulator, R / T1, low-noise high-amplification, sub-harmonic Wave mixing, intermediate amplifier, time-division circuit, multi-target signal correlation matching filter are processed and controlled by DSP and MCU. In case of multiple targets, DSP suppresses false alarms and determines azimuth, distance and relative speed. CRT displays three-dimensional images to identify the closest distance to the target If the target is smaller than the safe distance, the audible and visual alarm will be used to intelligently avoid obstacles or slow down when approaching the dangerous distance. Its control will make decisions with reference to the actual water surface, the speed of the ship and GPS data to improve the safety of the ship.

Description

technical field [0001] The invention relates to the technical field of radio wave transmission and reception to detect target azimuth, distance and speed, in particular to a millimeter-wave time-division frequency modulation marine multi-target detection and anti-collision radar. Background technique [0002] At present, with the rapid development of ocean shipping and inland river and lake shipping and fishery, a large number of ships are increasing, ports and waterways are becoming more and more crowded, and ships are often overloaded and speeding, especially when two or more ships meet, their inertial forces impact and set off large waves , Affecting the course is not easy to operate correctly, causing accidents caused by ships colliding with each other or hitting bridge piers, and in severe cases, the ship sinks or even the bridge collapses. Accidents are more likely to occur during severe storms. Therefore, it is imperative to apply radar anti-collision in ocean shippi...

AI Technical Summary

Problems solved by technology

In addition, simple monitors are difficult to distinguish adjacent targets, cannot display multiple target panoramic images, and lack early warning for relative positions, distances, and moving speeds

Overall structure The existing anti-collision radar lacks the function of using sensor signals to form a closed-loop control, lacks the adaptive control of the antenna in the water environment and the intelligent control of automatic obstacle avoidance, deceleration, and boat braking, and cannot help the driver in time to avoid danger in poor visibility or navigation distress. ACCIDENT

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