passive ranging Doppler 无源测距多普勒雷达
passive ranging Doppler radar 被动式测距都普勒雷达
optical passive ranging 光电被动测距
passive ranging Doppler system 被动测距多普勒系统
passive-ranging 被动测距
passive ranging sonar 被动式测距声纳
image passive ranging 图像分析被动测距
monocular passive ranging 单目测距
Binocular passive ranging 双目立体测距
The research work of the dissertation includes the following two parts: researching the passive ranging technology and developing system hardware of the sonar pulse detection module.
本论文的研究工作分为两个部分：被动测距技术研究和声呐脉冲侦察模块系统硬件的研制。
参考来源 - 声呐脉冲侦察及硬件系统实现研究The accurate formula of three-sensor array passive ranging suitable for the near field are given in the thesis which are used to process data, the factors which mainly affect the results' precision are discussed.
本文首先给出了适用于近程的三元阵被动定位技术的精确测向测距计算公式,讨论了影响测距测向精度的主要因素,并将其用于后续实验数据处理中。
参考来源 - 三元阵浅海近程被动定位研究与分析·2,447,543篇论文数据，部分数据来源于NoteExpress
A passive ranging method, using focused beam-forming, has a good precision in near field.
介绍了一种近场高精度被动定位方法——聚焦波束形成声图定位。
In this paper, we introduce passive ranging of target based on the bearings and time-delay information of dual arrays and filtering algorithm of ranging.
利用有一定间距的两部声纳基阵提供的目标方位和时延差的信息，实现对目标的被动测距。建立了测距物理模型，给出了后置距离滤波算法。
The system of passive ranging SONAR makes use of the target noise received by the equipment which converts energy from one form to another to estimate the target distance.
被动测距声纳系统是利用换能器基阵接收的目标辐射（噪声）信号来估计目标距离。
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