The acoustic systems trainer
Image 1: The acoustic systems trainer included: AST Console and Acoustic Tank with Target Transport System
SONAR is the underwater equivalent of radar, and like radar its functions are many and varied but are used under water. These include the detection, identification, location and speed indication of 'targets of interest'. There are basically two sonar modes of operation, 'Passive' (receiving or listening) and 'Active' (transmitting and receiving).
The acoustic systems trainer AST was developed for the purpose of training and research. This system has been used in many Navy schools in the world, to provide to students the practice exercises for more understanding about the theory of sonar and underwater acoustics signal, included:
Image 2: The navy schools was used the AST systems
System included:
AST Console |
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Acoustic Tank |
Rack mounting enclosure 19" / 48cm with handles |
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Acrylic - 12 and 15mm thickness |
110 / 220 / 240 Volts 50/60~ @ 2 amps |
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Length 1,200mm |
USB2 connector to PC |
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Width 600mm |
0-12 volts/+5 v/-5/+15v/-15v D.C. |
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Depth 600mm |
TX CW @ 200 kHz - CAL/VAR |
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Heater with thermostat - 3kW |
PRF @ 714Hz - CAL/VAR |
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Int/Ext Digital Thermometer |
PW @ 100µsecs - CAL/VAR |
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Stainless steel frame |
TX PULSE Gated 100µsecs ~ 20CW cycles |
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Transport System and transducer guide rails |
TX2, TX3 Fixed and Variable Phase O/Ps |
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Sonar Signal analyzer |
SYNC pulse 5v - positive polarity |
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12,14,16 bits Resolution ~ 500Ms/sec |
Echo Threshold control |
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2 Channel operation + Math functions |
Target Transport System |
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Storage Oscilloscope 100nsec - 600sec/div |
0-12 Volts speed controlled |
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Averaging 1 - 256 |
Auto/Manual reversing |
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Phase Measurement |
Direct traction drive |
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Spectrum Analyzer .001Hz - 50MHz |
Sliding Target Rails |
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AM/FM/FSK Modulation~ Sweep |
Reversing sensors |
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Transient Recorder >30,000 points ~ 750 days |
Targets |
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Voltmeters - 6 programmable |
Active |
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Arbitrary Waveform Generator 1µHz - 30MHz |
SS Flat plate 20cm sq |
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Transducers |
SS Flat plate 10cm sq |
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200 kHzresonant frequency |
SS Grill plate 10cm sq |
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8°~16° beam width @ -3dBs |
Acrylic Flat Plate 20cm sq |
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Conical beam shape |
Passive |
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Epoxy resin encapsulation |
Variable speed passive- |
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2.5" / 6cm diameter pod |
Three bladed prop |
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BNC connector coaxial cable |
Four bladed prop |
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Reversible operation |
Five bladed prop |
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Orientation - vertical or horizontal |
PT Vari-speed Motor ~Gearbox |
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3 Transducers supplied |
Source: RSI