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Information operations environment,Accurately and rapidly to position our ship location coordinates and the enemy ship's geographic coordinates is positioning system design's essential condition.The traditional ship positioning system used on ships are positioning tracking location of the source signal poor stability, poor positioning signal under the environment of the search domain range small, stationary wave anti interference such as a series of problems. Through deep research and analysis, the paper puts forward information operations environment ships passive location system design. Using three dimensional space positioning unit, wide-area GPNS harmonic vibration frequency signal retrieval module and anti interference technique to solve the problems existing in the traditional,to realize ship combat environment passive location system design.Under operational environment,to go on simulation experiment tests for passive positioning system design.Simulation tests prove that the proposed passive location system design information operations environment ships are fast positioning, coordinates, positioning, positioning source strong anti-interference, under the bad environment to achieve the goal of passive location.