Millimeter wave marine frequency modulation multichannel anti-collision radar

Abstract

The invention relates to the radio-positioning technical field, particularly a millimeter-wave marine frequency modulation multi-channel anti-collision radar, which is realized through the following steps: adopting the full-phase parameters to receive / transmit reference signals; asynchronously controlling the time division and the time sequence; watching the targets which are prone to collision on the water surface in an omni-directional manner through DSP cyclic scanning wave beams by a quasi-optical dielectric lens antenna circular array; controlling the time division SAW multi-channel passive frequency modulation through a plurality of water surface waterway cameras, an own ship speed sensor, a satellite positioning sensor GPS data MCU; sending to antenna array to transmit through an up-converter, T / R3, a frequency multiplier and a power amplifier, a circulator and T / R2; extracting the SAW multi-channel signals from the returning wave through the antenna array, a wave beam switch, T / R1, the circulator, a high amplifier, a down-converter and a medium amplifier; detecting a plurality of barrier target DSPs so as to confirm the position, the distance and the relative speed; displaying the three-dimensional image on a CRT, wherein the closer the ship gets to the target, the higher the resolution power is; controlling the false-alarm identification and tracing the nearest targets; giving an alarm when the distance is smaller than the safety distance; and intelligently avoiding the barriers or reducing if the distance is close to a risk distance, wherein the control is determined based on the actual condition of the water surface environment combined with the own ship speed and the GPS data, thereby improving the shipping safety.

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 marine FM multi-channel 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 illegally, especially when two or more ships meet. Waves affect the course and are difficult to maneuver correctly, causing ships to collide with each other or hit bridge piers. In severe cases, ships sink and even bridges collapse. The probability of accidents is greater in stormy weather, and it is urgent to configure advanced anti-collision radar. FM-CW frequency modulation continuous wave anti-collision radar is limited to the detection of a single target. According t...

AI Technical Summary

Problems solved by technology

The FM-CW antenna transmits energy leakage and blocks the reception of echo signals. Adjacent targets are difficult to distinguish and multiple target panoramic images cannot be displayed. There is no early warning for the relative position, distance and relative speed of multiple targets.

Generally speaking, the existing anti-collision radar lacks the function of closed-loop control using sensor signals, lacks adaptive control of channel environment antennas, automatic obstacle avoidance, and intelligent control of deceleration, poor visibility or driving encounters dangerous situations, and does not help drivers in time to avoid accidents

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