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7920821 |
All ship speeds correlation SONAR simulator
The present invention is a system that mathematically simulates acoustic waves that are reflected off an ocean floor from a SONAR transducer mounted on a ship, submarine, or other water navigable...
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7409323 |
Method for detecting a spatial random process using planar convex polygon envelope
A method is provided for automatically characterizing data sets containing data points, which may be produced by measurements such as with sonar arrays, as either random or non-random. The data...
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7269538 |
Method for sparse data two-stage stochastic mensuration
A method is provided for characterizing sparse data as either signal or noise. In one embodiment, a two-dimensional area which contains a distribution of data points of the sparse data from a...
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6584300 |
Object-oriented system for simulating sonar target acoustic scattering
A detailed sonar target scattering simulation system using object-oriented techniques to implement a broadband computational simulation of a plurality of detailed target highlight features. The...
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6150976 |
Synthesis of overlapping chirp waveforms
A digital radar landmass simulator (DRLMS) used for stimulation testing pulse radars, wherein the DRLMS operates by synthesizing time-overlapping chirp waveforms using finite impulse response...
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6118289 |
Cleaning method and cleaning device and cleaning tool for board electrical-test probes, and board electrical-test device and method
To securely clean dirty material deposited on ends of board electrical-test probes used in a board test device for executing tests including an incircuit test by a cleaning job executed once, the...
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6002914 |
Method and apparatus for simulating reverberation in a multipath sonar system
A method and apparatus for simulating reverberation signals in a multipath onar system is provided. The invention includes an input means for providing a plurality of simulated sonar system...
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5995803 |
Method and apparatus for simulating a multipath sonar system
An apparatus and method is provided for producing an output simulating a tipath sonar system. An input means produces signals corresponding to sonar system parameters. A generator means is jointed...
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5983067 |
Method and apparatus for simulating cross-correlation coefficients in a multipath sonar system
A method and apparatus for simulating the output of a multipath sonar sys. An eigenray module generates a plurality of eigenrays having terms that correspond with simulated parameters of a sonar...
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5978646 |
Method and apparatus for simulating a lofargram in a multipath sonar system
A method and apparatus for simulating a lofargram in a multipath sonar sym is provided. The invention includes an input means for providing a plurality of simulated sonar system parameters. A...
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5978647 |
Method and apparatus for simulating autocorrelation coefficients in a multipath sonar system
An apparatus and method is provided for producing simulated autocorrelation coefficients of a multipath sonar system. An input means produces signals simulating sonar system parameters including...
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5299171 |
Torpedo decoy signal generator
A torpedo countermeasure decoy which produces and broadcasts signals that e usually more attractive to a homing torpedo than those emanating from its intended target. Timely reset staircase...
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5062083 |
Ping elongator-modulator for realistic echo synthesis
A Sonar decoy system receives an interrogating pulse from an energy source nd then distorts, elongates, amplifies, and retransmits the pulse to simulate an echo of that pulse rebounding from the...
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5032083 |
Computerized vocational task guidance system
A system for training or aiding an impaired individual to perform a series of tasks at spaced work sites comprises a mobile device for being worn or carried by the individual. The mobile device...
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4991143 |
Mobile target acoustic system
This system is directed to an acoustic target simulator for use with active nd passive sonar systems. A receiver and a transmitter are mounted on the front and rear of the simulator. Separate high...
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4973252 |
Sonar simulation system using advanced digital to video conversion techniques
A sonar simulation system comprises a general purpose digital computer and n interface processor which receives position and intensity information from the computer for the effects to be simulated...
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4972379 |
Sonic echo simulator
A sonic echo simulator for simulating sonar signals reflected from underwr targets having a transmitter which broadcasts sonar signals through a given amount of water toward a receiver for readout...
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4943951 |
Depth finder with tutorial
A liquid crystal display depth finder using a sonar transducer is provided with a plurality of input keys interfaced to a microprocessor with each input key being dedicated to a particular function...
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4759067 |
Acoustic regenerator
An apparatus for extracting, storing and repetitively replaying a broadband atasample is fabricated from proven electronic components to assure long term reliability and reproducibility. A...
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4667199 |
Simulator
A simulator for simulating radar or sonar signals returned to an observation point from a three-dimensional object of non-uniform reflectivity. An imaginary three-dimensional object is defined...
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4393483 |
Test set for a directional command active sonobuoy system (DICASS)
A DICASS test set utilizes a microcomputer to process infromation from an put and a down link section, generate the appropriate control logic for all the various electronic sections and format the...
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4347403 |
Electrical waveform synthesizer
This electrical waveform synthesizer uses a digital feedback loop circuit which includes selectable inputs for multiplex or recirculation operation, and a shift register whose shift rate is...
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4250634 |
Sonobuoy simulator device
The invention relates to a simulator for providing waveforms of the type produced at a receiver from a sonobuoy transmission. The simulator signal includes a component representing reverberation...
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4219885 |
Sonar target simulator
1. A system for simulating wave reflections from an irregular-shaped moving bject which has been illuminated with energy of frequency F, said system comprising; a receiver (10) for said frequency...
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4057913 |
Simulated training system that utilizes operational equipment
The invention of this disclosure is a training system that utilizes operational equipment in conjunction with ground-based simulation training equipment. The apparatus of this invention comprises...
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3936954 |
Electronic bearing selector for omni-directional signals
1. An electronic circuit for use with apparatus having timing signal geneing clock means and means for combining waveform information from a plurality of input channels into a single pulse train...
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3829596 |
SONAR REVERBERATION SIMULATOR
An electrical system for simulating sonar reverberation wherein an original onar signal is transferred to digital form and stored in a memory means, each signal sample at a different address, and...
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3706963 |
ACOUSTIC TARGET SOURCE
A plurality of separate channels, each generating a different acoustic frency band, have connected, in tandem, a random noise generator, a shaping filter, an amplitude clipper, an amplifier and an...
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3676565 |
TIME DOMAIN WAVEFORM SYNTHESIZING METHOD
A method of synthesizing time domain waveforms from data in the frequency domain with improved resolution in the middle and lower frequencies. Frequency data is broken down into groups and each...
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3676802 |
SUBMARINE PROPELLER CAVITATION NOISE SIMULATOR
Simulation of submarine propeller cavitation as it varies with speed and th of submergence is effected by feeding a frequency proportional to blade rate to a counter which is periodically read out...
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3671657 |
ECHO SYNTHESIZING APPARATUS
Echo synthesizing apparatus utilizing a fixed delay line having spaced tapsonnected to attenuators by gate means which are operated in an aspect dependent manner by shift registers so as to...
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3641485 |
ECHO SIMULATION MEANS
Synthetic sonar echoes are generated in response to a sonar signal by utiing a delay line, time compression technique to generate a reconstructed waveform which is then sampled to provide a pulsed...
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3610798 |
SONAR ECHO SIMULATOR
A sonar echo simulator utilizes analog and digital means to generate a ses of highlight trigger signals the timing of which is related to simulated target length, length of insonifying pulse, and...
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3532798 |
ATTENUATOR
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3419711 |
Combinational computer system
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3311868 |
Sonic simulator
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3180295 |
Submarine simulator
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3165734 |
Screw noise simulation technique
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3164659 |
Acoustic system
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3153770 |
Sonar echo simulator
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3145365 |
Acoustic water path simulator
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3130384 |
Artificial target
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3092684 |
Sonic simulator
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3009264 |
Simulator for echo ranging
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2975396 |
Artificial sonar target
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2969599 |
Group trainer for operators of echo-ranging equipment
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2887671 |
Echo elongator
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2838850 |
Virtual target for echo ranging apparatus
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2780011 |
Shipboard training device
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