而是存在一个不小的概率椭圆误差区域，因而无法精确确定被测目标的真实位置。
Moreover, there is still a large error area of probability ellipse, which makes the precise location cannot available.
研究了椭球目标单发命中概率的计算方法，得到了类似于椭圆目标的一系列计算公式，并详细给出了数学证明的推导过程。
The arithmetic of hit probability model of ellipsoidal target single firing was researched, a series formulas was put forward, and the mathematics certification was deduced in detail.
文中还根据积分中值定理证明了应用概率积分法求得的下沉等值线是椭圆形或圆形。
According to the theorem of integral mean value it is proved in this paper that by means of probability integral the subsidence equivalent curve is a circle or a ellipse.
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