1. We picked up two submarines on sonar.

2. Having been suggested by a bat, people invented sonar.

3. The ship's sonar can detect the presence of solid objects in the water.

4. Sonar was used to locate the submerged plane wreckage.

5. They carry simple Kelvan Hughes sonar and Racal-Decca radar.

6. We used three kinds or sonar apparatus.

7. The Bottle-nosed dolphin's sonar sense is remarkably accurate.

8. In water, sonar is essential for long distance perception, for light can not penetrate more than sixty feet or so.

9. Clustering applications would include things like character recognition, sonar / radar signal classification, and robotic control.

10. The Lowrance company introduced the first civilian sonar in 1957.

11. They used sonar in a search for the voice and data recorders and the aircraft engines, among other components.

11.

12. The sonar room was heavily insulated against all outside noise and dimly lit by subdued yellow lighting.

13. The gauges and sonar screen are spread across the bottom third of the computer monitor.

14. Sonar behaves differently because sounds reverberate off the sea floor.

15. There is another dark world where animals use sonar to find their way around.

16. Distinguishing between active sonar returns from mines and returns from rocks and debris on the sea floor is difficult.

17. The sonar watch on the ticking device in the crashed bomber was now continuous.

18. A dolphin is able to produce sonar clicks by forcing air through special passages and sinuses in its head.

19. Navy salvage experts used sonar to help locate the area of submerged wreckage.

20. Sonar, Kipper and Bottlenose were waiting for Seaweed.

21. The answer is that they use echolocation or sonar.

22. Sonar is an acronym for sound navigation ranging.

23. Beamforming is an important technology in sonar signal processing.

24. Doppler - sonar is a dead - reckoning system.

25. In practice, the word seems to be used mostly to refer to animal sonar.

26. Observations of Freddy led them to conclude that dolphins use sonar while hunting.

27. So these particular species of bat or whale are living and working in a sonar world.

28. In that case, the mud prevented investigators from using sonar to locate the voice and data recorders.

29. And, the Navy is having trouble filling shipboard billets with enough sonar and fire control technicians, who require extensive schooling.

30. Something in the loch has produced some very peculiar sonar traces on some very sophisticated equipment, and that something demands explanation.

31. Cavitation is noisy and easily detected by sonar.

32. Firstly the dynamic models of sonar array are given.

33. I'm getting a strong response on the sonar.

34. To build a good salt delve gas storage reservoir, sonar measuring technique is introduced.

35. An unnamed U. S. military official told CNN that the submarine damaged an underwater sonar array on Thursday as it was being dragged by the USS John S. McCain in waters near the Philippines.

36. The paper presents a method of lake bottom sediment classification using echo signals provided by a wideband active sonar.

37. The study on the characteristics of scattering from an underwater target is only the base that the active sonar works on but also the source which new ideas, new theories and new methods come from.

38. The measurement of signal transmission time is a critical technique for Radar and Sonar System.

39. Mk800: At present, the United States Pacific Fleet, the US government has asked for the lifting of its "restricted use" active sonar sound of the water requirements.

40. A method to obtain the vertical directivity of hydrophone triplets towed line sonar by the optimal array processing is introduced in brief at first.

41. On the final dive of the trip,(/sonar.html) the scanning sonar detected a large object on the seafloor.

42. The problem to forecast integrated sonar self-noise of sailing naval vessels was researched.

43. Actual data were utilized to train BP neural network that can be used to accurately forecast submarine sonar self-noise.

44. The traditional method of Kalman filter for passive sonar target track association is limited in practice.

45. Reducing the self noise of submarines can effectively increase passive sonar range sonar platforms.

46. In this paper, Bayesian Regularization algorithm and BP neural network were combined to forecast submarine sonar self-noise.

47. The digital active sonar has many advantages, but we have many problems to realize them.

48. The users can also get the information on the already installed plugins, compatibility verification, check new versions of Sonar and automatically manage the plugin compatibility matrix.

49. A bottom detection method used in the multibeam bathymeter sonar is introduced. The method is based on the separate aperture method, which is associated with phase information.

50. A sonar array is a radar towed behind a ship that listens and locates underwater sounds.

51. The towed array sonar is used extensively in modern antisubmarine, ocean geologic and resources surveying techniques.

52. This dissertation studies and analyses active sonar reverberation model and anti-reverberation signal processing.

53. Enemy forces are constantly listening with floating sonobuoys, sonar mines, passive arrays towed by ships and subs , as well as active sonar from those vessels.

54. Bathymetric (or sea floor terrain) data is often collected from boats using sonar to take measurements of the sea floor, " she added.

55. The Spherion is a Thales Underwater Systems hull mounted sonar. It involves the porting of the DSTO Panorama software application to an industrial Sonar Operator console (SOC).

56. In this paper, a new technique about long distance source localization with passive synthetic aperture sonar array is presented.

57. In the sonar room Chief Petty Officer Mike Morrison and Sonarman First Class Billy Stewart faced display screens and computer keyboards.

58. The utility model provides a towed body used for a self-stabilization sonar platform, which comprises a towed body housing, a sonar installation platform, a sonar array and a towed body hanger plate.

59. Extracting line spectrum from ship- radiated noise is a key technique for identification of underwater targets in passive sonar system.

60. Feature extraction of targets radiated - noise is the key technique of passive sonar target recognition system.

61. In addition, it is certificated that the passive synthetic aperture sonar array can realize effectively long distant source localization by normal-mode filtering method.

62. Sound reflection sound shadow of high frequency imaging sonar detecting mine underwater was simulated with computer.

63. The propeller shaft frequency is one of the important target recognition features for passive sonar.

64. A new adaptive data reduction algorithm is presented to display large amounts of data on the computer screen of active sonar system.

65. A sonar array signal simulator generating signals received by hydrophones in a sonar array is useful in underwater acoustic engineering. It can simulate true detected targets as well as the ambience.

66. It's here today -- with night vision, sonar bumpers, video games.

67. The F is used for short range anti-submarine purpose around the carrier and depends on its own AQS-13F suspensory sonar to detect the submarine.

68. Describing the common display format of sonar display in detail that is all-scene, fan-scene, A-type and range-azimuth etc.

69. This paper analysised the possibility of using the adaptive line spectrum enhancer with LMS to improve the detection range of active sonar according to its characteristics.

70. The extraction of the in-phase and quadrature components from a received echo signal is an important problem in the digital beamformer of sonar systems.

71. It is an oceanographic ship that gathers underwater acoustic data(), using sonar.

72. The sonar array was deployed at the time of the confrontation, and a U.

73. In this paper, a new map building method sonar data is presented.

74. Side-scan sonar is an important means of detection in hypsography, and its incorporation of computer technology has greatly promoted its development.

75. The sonar buoy testing system can emulate signal of underwater sound and detect the operating status and performance of sonar buoy.

76. The very strong property of the synthetic array sonar is the ability to acquire a high azimuth resolution from a physically small array.

77. The paper is on improving the direction model of Passive SONAR.

78. In this thesis, the signal waveforms of an active sonar in shallow waters are studied, in particular, the structure of wideband Doppler sensitive signals are emphasized.

79. By using the optimal assignment algorithm of plot-track correlation, the results obtained are satisfactory in computer simulation for sonar TWS system.

80. As an advanced underwater imaging sonar, synthetic aperture sonar (SAS) has the ability to acquire a high azimuth resolution from a physically small array, thus has a broad prospect.

81. 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.

82. The author puts forward that using the measurable disturbance decoupling control to compensate the influence of the boat posture on sonar array posture.

83. The evolution of the odd shaped head has long puzzled scientists and many reasons such as manoeuvrability, smell and inbuilt "sonar" have been tested.

84. In the past, sling sonar"s antisubmarine efficiency was simply managed, that was out of accord with fact."

85. Digital scan converter (DSC) is an indispensable part in the display equipment of radar, biomedical ultra sound detector, sonar, electronic surface analyzer.

86. Active SONAR provides signal for enemy when ranging pulse and this is very dangerous for submarine.

87. In this thesis, two key-techniques of high-resolution imaging sonar are studied: beam-forming and acoustical image processing.

88. At last the sonar array attitude stabilization system based on hardware and software was debugged successfully.

89. On the basis of building forward looking sonar view model and artificial potential model, decision control of AUV is made, objects are searched through grads approach, a collision free path is planed.

90. Sound reflection and sound shadow of high frequency imaging sonar detecting sea mine underwater was simulated with computer.

91. Equipped with electronic intelligence (ELINT), bow-mounted sonar, optical and acoustical surveillance systems, the ship was designed to collect foreign ship intelligence in offshore waters.

92. At last, a suitable sonar signal waveform and the frequency coding scheme are presented.

93. According to the tactical background that submarines use thermocline to escape active sonar, the effect of thermocline on active sonar searching submarine was studied.

94. SONAR both supports Automatic Speaker Recognition and Automatic Speech Recognition.

95. The thesis presents and implements a novel module - based Speaker recOgnitioN softwAre platfoRm ( SONAR ).

96. Simulation method and hardware system of multi - target multi - parameter sonar signal are described in this paper.

97. With the rampant expansion of activities of frogman invasion, sonar for detecting frogman has attracted great attention, and thus systems for ensuring underwater security are suggested.

98. The 3D imaging sonar adopts the universal high-speed signal processing mini-platform which uses TMS320C6416 as its main processor to accomplish the arithmetic.

99. In order to detect and monitor targets in broad sea environment, the modeling and simulation of passive sonar array nets have been studied in this paper.

100. In the littoral environment, the bottom scattering is one of the most important factors for limiting the performance of active sonar.

101. Then parameters of each slave-system are obtained by analyzing the active sonar equation. It makes designs of transmitter and receiver circuit hold water theoreticly.

101. try its best to collect and create good sentences.

102. Extended spirality searching model of dipping sonar and submarine moving models were built.

103. Target motion analysis ( TMA ) is an important problem for sonar.

104. In this dissertation, we study a supergain array to improve the detection performance of passive sonar.

105. The largest of the microbats, this white-furred cave dweller found across northern Australia also counts lizards and frogs among its prey, and uses its eyes as well as sonar to hunt.

106. The sonar installation platform is equipped with the sonar array which is isolated with the inner part of the towed body housing.

107. Each sensor node makes a local decision according to the characteristics of sonar receiver and sends it to the fusion center node.

108. Compared to experimental data, this method is better than other classical methods and improves PSNR of processing result and edges keeping of the sonar image effect.

109. Passive sonar technology is applied in the fishery detector system for the first time as well.

110. Recently in the analysis of active sonar signal detecting performance,[] the statistical model of reverberation envelope is assumed to be in accord with Rayleigh-distribution in computer simulation.

111. The algorithm makes sure of ranging underwater moving targets by two sonar array.

112. At present simulation research has infiltrated into every aspect of acoustic engineering and technology and become an important method of sonar equipment's research and development.

113. The texture feature set of sonar images is established by extracting co-occurrence matrix and statistical features of wavelet package coefficients of images.

114. The sonar display console plays an important role in displaying the result of signal and information processing suitable for the operators.

115. The results of simulation show that adaptive noise cancelling techniques could cancel the strong noise generated by the ship to restrain the noise from disturbing the sonar.

116. A signal source in sonar receiver′s testing is designed, its working principle is based on DDS technology and log DAC.

117. The design of servo system for pitch attitudes of a mine hunting sonar array was made using frequency domain control and variable structure control respectively.

118. Sonar to control. The bottom is rising. Range one thousand yards to the continental shelf.

119. Its goals: to use acoustic imaging, sonar, and 3-D video to virtually preserve Titanic in its current state and to help determine just how far gone the shipwreck is and how long it might last.

120. For radar and sonar systems, wideband condition has more applications and suitability than narrowband condition.

121. The actual data of naval vessel sonar are used to train the network, and then the trained neural network can forecast the naval vessel sonar self-noise accurately.

122. In applications of array processing such as radar, sonar, and wireless communications, the array observed signal is best modeled as a distributed, rather than a discrete source.

123. Detecting sonar pulse transmitted by an active sonar, it is sonar pulse detection.

124. Conclusion: Pure - tone threshold of hearing by air conduction must be measured when sonar trainees were chosen.

125. The localization principle of bistatic sonar is given and the GDOP(Geometry Dilution Of Precision) which used in bistatic radar for describing the localization error has been cited in bistatic sonar.

126. As be known, it is the base work for sonar designer to study beam pattern, and also make very important actions in naval tactics.

127. A novel submarine optical fiber cable monitoring system based on BOTDR and sonar is proposed, and the method of measurement is also discussed.

128. The main function of the module is as follows: it can detect the CW signal transmitted by the active sonar, and measure the frequency of target signal and the direction of target.

129. Based on uniform line array, the sonar equation of active sonar beam main lobe and side lobe interfered by noise-jammer are presented.

130. The function of sonar display console is to present the result of signal and information processing on the screen and to supply the information about the watched field to the operator.

131. In order to achieve higher accuracy in probing seabed property,(http:///sonar.html) forming the image of lineation with higher sonar strength becomes a basic rule for judgment.

132. In military engineering applications, identification of sea bottom types are vary important for match field location, low-frequency sonar distance forecast, and choosing the location for submarine.

133. It works in a similar way to a sonar unit on a warship or submarine.

134. Hormone-A has a search radar in a large fairing under the nose, and a towed magnetic anomaly detector, while a dipping sonar is housed in a compartment at the rear of the cabin.

135. All kinds of parameters that have function to submarine sonar self-noise were analyzed.

136. The applications of titanium alloys in torpedo tube, high pressure vessel, severe cooling vessel, sonar dome, water brake cylinder and propeller for naval vessels were introduced in details.

137. The most he heard, from sonar echoes in 1997, was very like a whale.

138. A sonar array is a device towed behind a ship that listens and locates underwater sounds.

139. On the base of the active sonar theory, This thesis provide active ultrasonic detecting system that application in low-speed moving object of short-range in shallow sea surroundings.

140. System composition, capability of mine hunting sonar and expendable are briefly introduced in the article.

141. The frequencies used in sonar systems vary from infrasonic to ultrasonic.

142. BBN has developed the ARTS array vehicle concept specifically to address the formidable problems of low-frequency active sonar sources.

143. Therefore , Passive SONAR SONARsubmarine . The traditional SONARs are consisted of middle or small scale Integrated circuit.

144. Your licence could not be found . To contact sonar - script . com.

145. The dynamic models of the sonar array are predigested logically, the concise and banausic models are given.

146. The main task of it is to measure the working parameter of active sonar and track the target.

147. For the active sonar operating in the reverberation-limited environment, reverberation is one of main factors restricting the performance exertion.

148. Supported by a project, this thesis presents the technology about passive sonar display and signal detection in design of the sonar display console.

149. He underwent three weekly sonar - wave treatments last season and still persistent pain.

150. CAATI technique is a high-resolution direction and amplitude estimation method used in multi-angle swath bathymetry sidescan sonar(MSBSS).

151. Abstract : Deep - sea sonar altimeter is a depth sounder to equip deep - sea detection devices.

152. With analyzing the detecting procedure of Low-frequency active sonar and emulating about it, the Optimum Detection Frequency Band of Low-frequency Active Sonar were researched.

153. Deep-sea sonar altimeter is a depth sounder to equip deep-sea detection devices.

154. Pass to the sonar technical research and application, analyze, compare, understand a dissimilarity.

155. A realization scheme of sonar - display - control system using EPM 3256 based on CPLD chips.

156. Weighted least squares (WLS) localization algorithm for bistatic sonar was proposed by fusing the data of transmitter and receiver. The localization principle and error of the algorithm were given.

157. Bathymetric (or sea floor terrain) data is often collected from boats using sonar to take measurements of the sea floor. The lines reflect the path of the boat as it gathers the data.

158. Targets captured by passive sonar are currently the radiant noises of ships or torpedoes.

159. This method is greatly increased in the high-intensity direct wave interference under active sonar echo extraction accuracy.

160. Target moving element is given through calculating sonar data,[http:///sonar.html] then its kinematic rule is imitated with uniform straight line motion.

161. The use of motorboats, nets and fishing rods, and sonar equipment allows for overexploitation to occur.

162. Sea Bat 7125-E - High resolution multi beam sonar, the S410 Deepwater hydrographic and broadband echosounder, and the PDS2000 Software package.

163. A passive synthetic aperture based on phase correction algorithm for solving the port-starboard discrimination problem in the non-aligned towed twin-line array sonar is described.

164. The sonar reveals acres of cobblestone fields surrounding our craft.

165. Precise bearing of underwater noise source is discussed in this paper. The performance comparison of the sum beam steering and the split beam steering methods in passive sonar is presented.