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- Design of Ultrasonic Ranging System for Liquid Caging 超声波测量罐中液面高度的系统设计
- Quasi-GPS ultrasonic ranging system and its location precision analysis 类GPS超声定位系统及其定位精度分析
- The Design of Software and Hardware for an Ultrasonic Ranging System for a Mobile Robot to Avoid Obstacle 用于移动机器人避障的超声测距系统
- Transducer de-convolution based high-precision ultrasonic ranging system 基于换能器解卷积的高精度超声波测距系统
- The Sampling and Handling of Ultrasonic Ranging Data for Robot. 机器人超声测距数据的采集与处理。
- AVR single chip ultrasonic ranging modules do, schematic and source code. AVR单片机做的超声波测距模块，原理图和源码。
- ultrasonic ranging system 超声测距系统
- Abstract：This paper introduces an ultrasonic ranging method based on analyzing the envelope of echo . 摘要：介绍了一种基于回波包络分析的高精度超声波测距方法。
- This paper introduces an ultrasonic ranging method based on analyzing the envelope of echo. 介绍了一种基于回波包络分析的高精度超声波测距方法。
- The unambiguous distance of tone ranging system is limited by the lowest frequency of tone. 侧音测距系统的最大无模糊距离受到侧音信号最低频率的限制。
- Echolocation calls are usually ultrasonic ranging in frequency from 20 to 200 kilohertz (kHz),whereas human hearing normally tops out at around 20 kHz. 用于回声定位的叫声一般是20－200千赫之间的超声波，而人所能听到的最高频率在20千赫左右。
- The ranging system turns optical heterodyne into electronic heterodyne demodulation, and the repetition error is less than 3%. 通过双频激光把光学外差探测变为了电子外差探测, 系统重复误差小于3%25。
- Echo RSSI signal strength information, and on the protection of mine workers RFID echo ranging system based on the RSSI. RSSI信号回波强度的相关资料，及关于井下工人保护的RFID基于RSSI回波测距系统。
- Echolocation calls are usually ultrasonic ranging in frequency from 20 to 200 kilohertz (kHz), whereas human hearing normally tops out at around 20 kHz. 用于回声定位的叫声一般是20－200千赫之间的超声波，而人所能听到的最高频率在20千赫左右。
- A responsive multiple frequency ranging system is designed by utilizing digital phase discrimination,based on FFT,and phase double principle. 利用基于FFT的数字鉴相方法和自乘倍相原理设计了一种应答式侧音测距系统。
- Liu Jibin,Zhao Huichang.Research on PN Phase Modulation and PAM Combined Ranging System[J].Journal of Astronautics,2004,25(2):152-157. [4]刘己斌;赵惠昌.;伪码调相与PAM复合测距系统研究[J]
- This paper describes the principle of microprocessor ultrasonic range finder. 主要介绍微电脑超声测距仪的工作原理。
- Moe has a grass shearer in his mouth and ultrasonic range finders to keep him from crashing into things. 莫伊的嘴巴里安装有割草机，身上还装有防止碰撞物体的超声波测距仪。
- Interconnection channel equipments' impedance mismatch is the key influence factor of system range performance in spread spectrum ranging system. 摘要高精度扩频测距系统中，信道设备间阻抗失配引入的测距误差是影响系统性能的重要因素。
- I was reading a magazine when the phone rang. 电话铃响时我正在看一本杂志。
