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.