The relative characteristics of the pseudo code are analyzed. With discussion on the principle ol ultrasonic level measurement based on pseudo code technology, the level measuring system is designed.

分析了伪随机码的相关特性，讨论了基于伪码相关技术的超声波液位测量原理，设计并完成了液位测量系统。

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The method of RVD relative navigation based on relative differential pseudo range of GPS was studied.

研究基于GPS相对伪距差分技术的RVD相对导航方法。

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Using the concept of pseudo control variable, a simple state equation is constructed which describes the relative motion between an anti-ship missile and a target ship.

利用伪控制变量的概念，建立了简单的描述反舰导弹与目标舰艇相对运动的状态方程。

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