| 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 | 一种基于声压、振速互谱法的矢量阵左右舷分辨方法 | CN201610352531.6 | 2016-05-25 | CN106066468A | 2016-11-02 | 梅继丹; 朱英慧; 孙大军; 马超; 张珂 |
| 本发明属于水声测向研究领域，具体涉及一种基于声压、振速互谱法的矢量阵左右舷分辨方法。本发明包括：收到的声压信号转换为频域信号后，作频域宽带常规波束形成处理，得到原始空间谱矩阵；其中，空间谱矩阵是指输出的空间谱类型的矩阵；对步骤(1)得到的原始空间谱矩阵进行双向一阶递归滤波处理，得到平滑后的空间谱；根据得到的平滑空间谱，在平滑空间谱的基础上提高DT个分贝得到谱峰筛选的门限。该方法可以对空间谱进行峰选，对谱峰范围内的信号进行方位估计，通过比较估计结果与谱峰位置对伪峰测进行消减抑制，进而克服低信噪比条件下左右舷模糊的问题，提高同性噪声背景中弱目标检测能力。 | ||||||
| 2 | USE OF PHASOR MEASUREMENT UNITS FOR DIFFERENTIAL GLOBAL NAVIGATION SATELLITE SYSTEMS (DGNSS) | US12735971 | 2009-02-18 | US20110001664A1 | 2011-01-06 | Dieter Olpp |
| A system determines and transmits correctional data of a global navigation satellite system (GNSS) which has a plurality of reference stations that can be used to determine the correction data by repeatedly measuring the position of the reference stations and comparing it to the previously determined exact position. The data determined in this manner are transmitted to a central station via a network and optionally processed in the central station. Such a system requires that every reference station be equipped with a GNSS receiver, but it is especially the connection to the central station that requires considerable financial resources for the establishment of the connection and both for the maintenance and operation of the network. An already existing network of the phasor measurement units of a power transmission network is therefore used. | ||||||
| 3 | Directional detection system | US21280971 | 1971-12-27 | US3875553A | 1975-04-01 | FORMICA VINCENT A; TOROK STEVE F; CARO JASPER |
| A directional detection system including a microphone assembly comprising an omnidirectional microphone and two orthogonal directional microphones. The omnidirectional microphone signal is connected to a phase lock loop comprising a sweep generator connected to drive a voltage controlled oscillator where the output signal of the oscillator is compared in a phase detector with the microphone signal. Upon registering a match and satisfying a predetermined signal-to-noise ratio the phase lock loop locks on to one spectral component of the microphone signal, the sweep is terminated and the loop tracks the signal by integrating the phase detector output signal and further controlling the oscillator therewith. The integrated detector output signal, or the loop error signal, is connected to an enable unit which produces an enable signal when the error signal is within a predetermined frequency band and exceeds a predetermined amplitude. The enable signal is connected to a plurality of narrow bandpass tracking filters set to pass a frequency determined by the oscillator, the filters being respectively connected to receive the omnidirectional and the directional microphone signals. The enable signal activates each tracking filter and the respective output signals thereof are connected to a frequency converter which converts the signals into respective sidebands. The sidebands are then compared in phase, generating an azimuth signal referenced against magnetic north.
|
||||||
| 4 | Directional subaqueous receiving equipment | JP5663576 | 1976-05-19 | JPS52141260A | 1977-11-25 | MATSUZAKI SUSUMU |
| PURPOSE:To improve wave receiving sensitivity and minimize the size of an equipment, by combining two sets of directional subaqueous transmitters and one set of non-directional receiver, comparing their phase characteristics and detecting a direction from which acoustic wave comes. | ||||||
| 5 | Acoustic direction finder | US703280 | 1976-07-07 | US4119942A | 1978-10-10 | Harold M. Merklinger |
| An acoustic direction finder which identifies and displays bearing of an underwater received signal without the requirement of scanning the ambient space. The output signals of hydrophones at the ends of a pair of orthogonally located dipoles are applied to differential amplifiers to provide orthogonal dipole response characteristics, and an in-phase sum of the signal at the center of the dipoles is obtained. The differential amplifier output signals are integrated and the resultant signals are applied to individual multiplying means with the sum signal whereby a pair of X and Y coordinate deflection signals are obtained, which are applied to a display device. | ||||||
| 6 | Multi-path signal enhancing apparatus | US643047 | 1975-12-22 | US4017859A | 1977-04-12 | Herman Medwin |
| A plurality of processing channels each receive one of a number of direct d secondary signal energy rays. Each channel includes an A/D converter and computer the logic of which is controlled by a Fast Fourier Transform (FFT) algorithm to produce a plurality of data outputs each containing the amplitude and phase information of selected frequencies present in the channel input. To enhance signal detection and minimize signal strength fluctuations, each of the selected frequency outputs of each channel FFT is compared with each identical frequency output of other channel FFT's. Phase compensation means such as a shift register adjusts the phase relationship between all identical FFT outputs to permit their amplitudes to be constructively added. The individual subtotals so produced are totalled to provide an output representing the combined strength of the multi-path signal energy. In particular, medium interfaces such as an air-sea or air-ground interface, produce wide variations in the incoming direction of the signal energy to be detected. | ||||||
| 7 | Circuitry for determining direction of impingement of a received signal | US310074 | 1972-11-28 | US3935575A | 1976-01-27 | Reinhard Leisterer; Walter Mahlstedt; Manfred Rubel |
| An improved system for determining the direction of impingement of a received energy signal, of the type having a plurality of receivers forming pairs of mutually perpendicular dipoles for receiving the orthogonal components of the impinging signal, apparatus for measuring these received components in order to produce signals indicative of the direction of impingement, and a display device connected to the output of the measuring apparatus. The measuring apparatus is provided with a plurality of amplifier circuits each of which is connected to a respective one of the receivers for producing a constant amplitude representation of its received signal. The use of these amplifiers helps to eliminate errors that would otherwise occur in the measurements due to inaccuracies in the measured amplitudes of the received dipole signals. | ||||||
| 8 | Apparatus for displaying the direction of incident plane waves | US70177268 | 1968-01-30 | US3464056A | 1969-08-26 | ZIEHM GUENTER; TRIEBOLD KARL-FRIEDRICH; SCHIEF ALFRED; LEISTERER REINHARD W |
| 9 | MOTION MODIFIED STEERING VECTOR | US14036361 | 2013-09-25 | US20150085615A1 | 2015-03-26 | Steven Richard Perrin; John Miles Hunt; Jian Li; John Weldon Nicholson; Song Wang; Jianbang Zhang |
| For a motion modified steering vector, a motion module modifies a prior steering vector with a motion vector. A steering module spatially filters audio signals using the modified steering vector. | ||||||
| 10 | Direction determining apparatus | US878506 | 1969-11-20 | US4078222A | 1978-03-07 | Thomas E. Woodruff |
| A system for ascertaining the bearing of a remotely-located acoustic signalource including a hydrophone array having an omnidirectional hydrophone and a pair of orthogonally-oriented directional hydrophones all of whose output signals are applied to a processor which combines the output signals of the directional hydrophones to provide a signal shifted in phase relative to the omnidirectional output signal by an amount equal to the bearing angle and which resolves the phase-shifted signal by phase detection into a pair of signals representative of the sine and cosine of the bearing angle. The sine and cosine signals are processed by integrators and a bearing angle computer to provide an output signal indicative of the bearing angle to a display. A second embodiment of the processor combines the directional hydrophone output signals into a pair of phase shifted signals for resolution, one leading and the other lagging the phase of the omnidirectional signal by an amount equal to the bearing angle. | ||||||
| 11 | Passive sonar bearing and frequency detecting and indicating system | US3462729D | 1964-04-13 | US3462729A | 1969-08-19 | PAPINEAU MILTON D; ROUTH CLAUDE C |
| 12 | Passive sonar detection and bearing system | US6156860 | 1960-10-10 | US3089118A | 1963-05-07 | BAUMANN HAROLD C |
| 13 | Acoustic direction finder | US8470649 | 1949-03-31 | US2966657A | 1960-12-27 | PRICE JAMES F |
| 14 | Incoming bearing measuring apparatus for acoustic signal | JP3344680 | 1980-03-18 | JPS56129874A | 1981-10-12 | KATAYAMA TAKASHI |
| PURPOSE:To efficiently measure the incoming bearing of an acoustic signal with a hearing sound by employing a signal obtained from a plurality of microphones having a specified directivity set under the sea. CONSTITUTION:This measuring apparatus is equipped with a nondirectional microphone 1 arranged to face the incoming direction of an acoustic signal, microphones 2 and 3 having a 8-shaped directivity whose directivities are arranged to intersect each other, a resolver 7 in which the 2-phase winding on the side of the stator is excited by the output of the microphones 2 and 3, a circuit 8 adapted to perform computation for the output of the winding on the rotator side of the resolver 7 and a amplification circuit 9 for giving the computation output to a speaker 10. The rotating shaft of the resolver 7 rotates and when the hearing sound reaches a specified level, the incoming bearing of an acoustic signal is determined from the angle of rotation of the rotating shaft of the resolver 7. | ||||||
| 15 | JPS5623359B2 - | JP5663576 | 1976-05-19 | JPS5623359B2 | 1981-05-30 | |
| 16 | VERWENDUNG VON PHASOR MEASUREMENT UNITS FÜR DIFFERENTIELLE GLOBALE SATELLITENNAVIGATIONSSYSTEME (GNSS) | EP09718019.4 | 2009-02-18 | EP2245480A1 | 2010-11-03 | OLPP, Dieter |
| The invention relates to a method and a system for determining and transmitting correctional data of a global navigation satellite system (GNSS). The GNSS comprises a plurality of reference stations that can be used to determine the correction data by repeatedly measuring the position of the reference stations and comparing it to the previously determined exact position. The data determined in this manner are transmitted to a central station via a network and optionally processed in said central station. Such a system requires that every reference station be equipped with a GNSS receiver, but it is especially the connection to the central station that requires considerable financial resources for the establishment of the connection and both for the maintenance and operation of the network. An already existing network consisting of the phasor measurement units (PMU) of a power transmission network is therefore used according to the invention. | ||||||
| 17 | VERFAHREN ZUM PASSIVEN BESTIMMEN VON ZIELDATEN | EP08716173.3 | 2008-03-03 | EP2140283A1 | 2010-01-06 | STEIMEL, Ulrich; STEINER, Hans-Joachim |
| The invention relates to a method for the passive determination of target data by means of a directionally-selective reception of sound waves, wherein a first converter arrangement uses estimated bearing angles, which are determined from estimated positions of a target, and measured bearing angles, to minimize bearing angle differences between measured and estimated bearing angles. In order to enable a suitable determination of the target data, with respect to time considerations for tactical requirements, without requiring an individual maneuver and frequency evaluation of the received sound waves, claimed bearing angle measurements of a second converter arrangement, located at a distance from the first converter arrangement, are utilized for the estimation of the target data when a parallax value determined between the bearing angle measurement of both converter arrangements is greater than a prespecifiable parallax threshold value, and the distance estimated during the target data estimation is smaller than a comparison distance determined from the parallax threshold value. | ||||||
| 18 | VERFAHREN ZUM PASSIVEN BESTIMMEN VON ZIELDATEN | EP08716173.3 | 2008-03-03 | EP2140283B1 | 2013-01-16 | STEIMEL, Ulrich; STEINER, Hans-Joachim |
| 19 | VERWENDUNG VON PHASOR MEASUREMENT UNITS FÜR DIFFERENTIELLE GLOBALE SATELLITENNAVIGATIONSSYSTEME (GNSS) | EP09718019.4 | 2009-02-18 | EP2245480B1 | 2012-10-17 | OLPP, Dieter |
| 20 | 표적 데이터의 수동 결정 방법 | KR1020097023750 | 2008-03-03 | KR1020100016545A | 2010-02-12 | 스테이멜울리히; 스테이너한스-조아침 |
| The invention relates to a method for the passive determination of target data by means of a directionally-selective reception of sound waves, wherein a first converter arrangement uses estimated bearing angles, which are determined from estimated positions of a target, and measured bearing angles, to minimize bearing angle differences between measured and estimated bearing angles. In order to enable a suitable determination of the target data, with respect to time considerations for tactical requirements, without requiring an individual maneuver and frequency evaluation of the received sound waves, claimed bearing angle measurements of a second converter arrangement, located at a distance from the first converter arrangement, are utilized for the estimation of the target data when a parallax value determined between the bearing angle measurement of both converter arrangements is greater than a prespecifiable parallax threshold value, and the distance estimated during the target data estimation is smaller than a comparison distance determined from the parallax threshold value. | ||||||
QQ群二维码
意见反馈
意见反馈