| 摘要 |
<p>An apparatus and method for accurately determining a target distance in adverse weather conditions utilizing both LASER and RADAR is disclosed. The radar signals (100) are used to determine an approximate range (104) which is then used as a gating window (106) for the determination of which laser reflection is from the actual target as opposed to a reflection from the atmospheric interference. The method basically comprises the steps of initiating a radar pulse (100) in the direction of a target and receiving a reflection (102), transmitting a laser signal (110) and receiving a plurality of reflections (112), determining an approximate range based on the radar signals (104), and using this approximate range to ascertain which of the laser reflections is from the target. This determination is preferably made by generating a gating signal and gate width from the radar signals (120) and passing the set of laser range signals through the gate to eliminate the false signals and select the signal that survives the gate as the accurate target range.</p> |
