基于近海面海气通量算法与抛物线近似方法建立光线传播轨迹数学模型，评估最大探测距离(MIVR)，阐释蜃影出现的机制.通过数值分析以及海上对比试验验证，在相同的风速条件下，MIVR会随海气温差(ΔT)的减小而减小; 当海气温差ΔT不变时，随着风速的增大，MIVR逐渐减小; ΔT越小，MIVR的递减量越趋于平缓; MIVR与高度位置的对应关系几乎是一条标准的斜线，且MIVR随着高度参数的减小而递减; 通过实际海上试验验证，模型评估MIVR的准确率较高.

Based on air-sea flux algorithm and parabolic approximation method, mathematical model for the optical propagation tracing was established. Maximum Inter-Visvion Ranges(MIVR) was evaluated, and the root cause of Mirage was analyzed. Numerical analysis and sea experimental results showed that MIVR decreases with the reduction of the temperature difference (ΔT) between the air and sea when wind speed is kept constant. Under the invariant ΔT, MIVR decreases with the increase of wind speed. The decrement of MIVR decreases with ΔT decreasing. The values of MIVR decrease linearly with the height of the sensor-target. The experiment proved that evaluation of MIVR with the model has high accuracy.