序号 专利名 申请号 申请日 公开(公告)号 公开(公告)日 发明人
1 一种基于多维波形编码的合成孔径声纳成像方法及系统 CN201210249537.2 2012-07-18 CN103576157A 2014-02-12 段江涛; 黄勇; 刘纪元
发明设计了一种基于多维波形编码的合成孔径声纳成像方法及系统,该方法基于方位向的时间、空间及频率域的多维波形编码,所述方法包含:步骤101)发射阵通过相控策略发射若干中心和载频不同的窄波束信号,将发射的脉冲时宽分为若干个子脉冲,在不同子脉冲时间内利用发射波束形成策略控制波束指向使其照射不同子测绘带;步骤102)将多通道接收阵接收到的各子测绘带的多孔径数据分别进行冲压缩和方位向FFT,然后按照解模糊方法进行方位向空域滤波后,再采用成像算法进行聚焦成像。总之本发明的技术方案采用空间分集技术,可以在一个脉冲重复周期内获得更多的方位向空间采样,从而使测绘效率得到提高。本发明主要应用于声成像领域。
2 多通道扫描延时计算方法及装置 CN201210591344.5 2012-12-31 CN103913747A 2014-07-09 李小雪; 王勇; 张羽
发明公开一种多通道扫描延时计算方法及装置。其中,所述方法包括步骤:以阵元表面上任意点为参考点,计算通道中各阵元中心点、扫描线起点相对于该参考点的位置参量;计算各阵元中心点到扫描线上焦点的距离dn;计算出每条扫描线上焦点F到每个通道的量化后的延时时间tn。本发明提高了聚焦精度,可提升基波图像质量,消除谐波下的伪像,并减少了延时计算中的实时运算量,从而可以节省资源。
3 基于分布式Phased-MIMO联合处理的目标探测方法 CN201310695778.4 2013-12-15 CN103713289A 2014-04-09 丁振平; 潘翔
发明公开了一种基于分布式Phased-MIMO联合处理的目标探测方法。该方法通过将多个子阵分布式地布置在不同的位置,子阵内部通过发射波束形成发射相干信号获取相干增益,子阵之间信号相互正交照射到目标不同位置获取目标分集,接收阵列通过接收波束形成与匹配滤波对目标实现检测。本发明方法可以获得相干与非相干增益,并且消除干扰、抑制混响,抗目标闪烁特性。在分布式目标,子阵的波束宽度大于目标尺寸的情况下,检测性能优于传统的相控阵列。
4 Multiple beam sounder JP2009507078 2007-04-26 JP2009534679A 2009-09-24 コプ、ロラン
The sounder according to the invention comprises two transmit-receive antennas (1, 10) whose respective axes are off-target toward the front, in the direction of movement of the platform, these axes being symmetrical relative to a straight line (3) passing through their intersection and parallel to the axis of travel of the platform, the transmit frequency of the first antenna, equal to the receive frequency of the second being different from the transmit frequency of the second, the latter frequency being equal to the receive frequency of the first.
5 Multiple beam sounder JP2009507078 2007-04-26 JP5358852B2 2013-12-04 コプ、ロラン
The sounder according to the invention comprises two transmit-receive antennas (1, 10) whose respective axes are off-target toward the front, in the direction of movement of the platform, these axes being symmetrical relative to a straight line (3) passing through their intersection and parallel to the axis of travel of the platform, the transmit frequency of the first antenna, equal to the receive frequency of the second being different from the transmit frequency of the second, the latter frequency being equal to the receive frequency of the first.
6 SONDEUR MULTIFAISCEAUX EP07728552.6 2007-04-26 EP2010938B1 2014-05-21 KOPP, Laurent
7 PROCEDE DE DETECTION DE CIBLE SOUS-MARINE AVEC DIVERSITE DE FREQUENCE EP93905377.3 1993-02-09 EP0626073B1 1996-10-02 DOISY, Yves
Process for detection of a moving underwater target using an active sonar, in which the sonar emits a plurality of different frequency pulses, and in which the signal processing comprises a path forming stage, coherent detection stages for each pulse, and incoherent grouping of the results obtained in the coherent detection stage. Advantageously, the pulse frequencies are selected so that each pulse reflected on a high speed moving target is outside the frequency range corresponding to the reverberation from each other pulse. The invention is of special interest when the path forming stage consists in swiching the sonar antenna's transducer signals to obtain at least one sub-antenna having a fictive movement to compensate the Doppler shift imparted to the stationary echoes by a sonar movement.
8 Multibeam sounder US12298415 2007-04-26 US08077548B2 2011-12-13 Laurent Kopp
The sounder according to the invention comprises two transmit-receive antennas (1, 10) whose respective axes are off-target toward the front, in the direction of movement of the platform, these axes being symmetrical relative to a straight line (3) passing through their intersection and parallel to the axis of travel of the platform, the transmit frequency of the first antenna, equal to the receive frequency of the second being different from the transmit frequency of the second, the latter frequency being equal to the receive frequency of the first.
9 Trailer cargo detection using ultrasonic transducers US11335226 2006-01-19 US07579941B2 2009-08-25 Ronald Cleveland; Steve Wendler
A cargo detector for use in a trailer that includes an ultrasonic transducer for covering the entire interior area of the trailer. In particular, the cargo detector has three modes including short range, long range, and proximity range, and can detect cargoes located flush against a front or rear wall of the trailer.
10 MULTIBEAM SOUNDER US12298415 2007-04-26 US20090175127A1 2009-07-09 Laurent Kopp
The sounder according to the invention comprises two transmit-receive antennas (1, 10) whose respective axes are off-target toward the front, in the direction of movement of the platform, these axes being symmetrical relative to a straight line (3) passing through their intersection and parallel to the axis of travel of the platform, the transmit frequency of the first antenna, equal to the receive frequency of the second being different from the transmit frequency of the second, the latter frequency being equal to the receive frequency of the first.
11 Trailer cargo detection using ultrasonic transducers US10633365 2003-08-01 US07015824B2 2006-03-21 Ronald Cleveland; Steve Wendler
A cargo detector for use in a trailer that includes an ultrasonic transducer for covering the entire interior area of the trailer. In particular, the cargo detector has three modes including short range, long range, and proximity range, and can detect cargoes located flush against a front or rear wall of the trailer.
12 Trailer cargo detection using ultrasonic transducers US10633365 2003-08-01 US20040140886A1 2004-07-22 Ronald Cleveland; Steve Wendler
A cargo detector for use in a trailer that includes an ultrasonic transducer for covering the entire interior area of the trailer. In particular, the cargo detector has three modes including short range, long range, and proximity range, and can detect cargoes located flush against a front or rear wall of the trailer.
13 Method and apparatus for remote measurement of variation in wind velocity US903481 1978-05-08 US4143547A 1979-03-13 Martin Balser
An acoustic echo system transmitter and receivers for measuring signal scattering at a zone resulting from wind movement, with the receiver doppler outputs averaged to provide spectra of wind velocity. Method and apparatus for calculating the second moment of the spectra which corresponds to gust velocities in the zone.
14 SONDEUR MULTIFAISCEAUX EP07728552.6 2007-04-26 EP2010938A1 2009-01-07 KOPP, Laurent
The sounder according to the invention comprises two transmit/receive antennas (1, 10), the respective axes of which are off-aimed to the front, in the direction of movement of the platform, these axes being symmetrical with respect to a straight line (3) passing through their intersection and parallel to the direction of advance of the platform, the transmit frequency of the first antenna, equal to the receive frequency of the second, being different from the transmit frequency of the second, this latter frequency being equal to the receive frequency of the first antenna.
15 PROCEDE DE DETECTION DE CIBLE SOUS-MARINE AVEC DIVERSITE DE FREQUENCE EP93905377.0 1993-02-09 EP0626073A1 1994-11-30 DOISY, Yves
L'invention a pour objet un procédé de détection de cible sous-marine mobile à l'aide d'un sonar actif, dans lequel le sonar émet une pluralité d'impulsions à différentes fréquences, et dans lequel le traitement du signal comprend une étape de formation de voies, des étapes de détection cohérente pour chaque impulsion, et de regroupement de façon incohérente des résultats obtenus dans l'étape de détection cohérente. Avantageusement, les fréquences des impulsions sont choisies de façon à ce que chaque impulsion réfléchie sur une ciblé animée d'une vitesse extrême est hors de la plage de fréquence correspondant à la réverbération provenant de chaque autre impulsion. L'invention est particulièrement intéressante lorsque l'étape de formation de voies comprend la commutation des signaux de transducteurs de l'antenne du sonar pour obtenir au moins une sous-antenne animée d'un mouvement fictif permettant de compenser le décalage Doppler apporté aux échos fixes par un mouvement du sonar.
16 Ultrasonic measurement device US15969218 2018-05-02 US20180321380A1 2018-11-08 Don BARKER; Brett BARKER
A measuring device is provided, having a housing having a circuit board and processor; a first transducer arranged on a surface of the housing and configured to transmit an ultrasonic pulse towards a target surface; a second transducer adjacent to the first transducer configured to receive a reflection of the ultrasonic pulse off of the target surface; and a thermistor on the surface of the housing adjacent to the first and second transducers and configured to measure air temperature surrounding the device. The processor of the device is configured to measure a time duration between transmitting the ultrasonic pulse by the first transducer and receiving the reflection of the ultrasonic pulse by the second transducer, and to determine a distance between a ground surface upon which the device is resting and the target surface based at least upon the measured time duration and the measured air temperature.
17 Trailer cargo detection using ultrasonic transducers US11335226 2006-01-19 US20060132306A1 2006-06-22 Ronald Cleveland; Steve Wendler
A cargo detector for use in a trailer that includes an ultrasonic transducer for covering the entire interior area of the trailer. In particular, the cargo detector has three modes including short range, long range, and proximity range, and can detect cargoes located flush against a front or rear wall of the trailer.
18 Proximity detectors with dual-speed tracking circuitry US312805 1989-02-09 US4973837A 1990-11-27 Peter F. Bradbeer
A proximity detector in which a sensor unit (10) senses reflected energy received from a predetermined volume or zone and generates an electrical signal representative of the received energy. Circuit means process the received signals to control the operation of apparatus such as automatic doors. One aspect of the invention is concerned with the sensor unit in which transmitters (14) are located in a housing with a receiver (15). The housing has a filter (7) through which infrared radiation can be transmitted and received. Mask areas on the filter define the zone into which radiation can be transmitted and from which it can be received. The filter is interchangeable so that zones of different sizes and dimensions can be provided. Another aspect is concerned with novel signal processing circuitry and a further aspect is concerned with an ultrasonic system wherein a multiplier is used to process the received signals.
19 Sonar system for classifying submerged objects US495905 1974-08-08 US3967233A 1976-06-29 Pierre Maguer; Paul Gourlay
A sonar system capable of identifying submerged objects near the ocean floor is provided. Transmitting and receiving transducers are mounted on a common support including an arrangement for pivoting the transducers around a vertical axis. The signals from the receiving transducer are amplified and appropriate phase shifting is provided to form very narrow, close monitoring channels focused in the Fresnel region of the transducer. Sampling circuitry for sequentially sampling the monitoring channels provides a signal for a CRT display and a memory lens. Possible applications include the detection and identification of influence ground mines.
20 Exploration of troposphere stratification US67961546 1946-06-27 US2507121A 1950-05-09 SIVIAN LEON J
QQ群二维码
意见反馈