Echo simulating probe
First Claim
1. An echo probe for providing simulated sonar signals to test distance measuring systems measuring lapsed time between transmitted and reflected pulses, comprising:
- input/output terminal means adapted to be connected to the distance measuring equipment;
control means for producing a control signal in response to a received pulse at said input/output terminal means, said control signal including spaced first and second control signals, said first and second control signals having different characteristics from one another;
power supply means for tapping power from the pulses received at said input/output terminal means and connected to said control means; and
carrier frequency oscillator means responsive to said first and second control signals for generating simulated first and second sonar signals at said input/output terminal means and having substantially the same frequency as the carrier frequency of said distance measuring system.
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Accused Products
Abstract
An echo probe taps power from pulses received at an input/output terminal from a distance measuring system and generates delayed simulated sonar signals at the input/output terminal which have substantially the same frequency as the carrier frequency of the distance measuring system. Control circuitry produces spaced first and second control signals having different characteristics from one another in response to a received pulse from the distance measuring system appearing at the input/output terminal and actuates carrier frequency oscillator circuitry to generate the simulated sonar signals. Circuitry is provided for controlling the delay between the received pulse and the simulated sonar signals and also to determine the pulse widths of the first and second control signals and the spacing therebetween. Level control circuitry regulates the amplitude of the simulated first and second sonar signals. Indicating circuitry provides an indication of the power level of the pulse signal received at the input/output terminal.
9 Citations
12 Claims
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1. An echo probe for providing simulated sonar signals to test distance measuring systems measuring lapsed time between transmitted and reflected pulses, comprising:
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input/output terminal means adapted to be connected to the distance measuring equipment; control means for producing a control signal in response to a received pulse at said input/output terminal means, said control signal including spaced first and second control signals, said first and second control signals having different characteristics from one another; power supply means for tapping power from the pulses received at said input/output terminal means and connected to said control means; and carrier frequency oscillator means responsive to said first and second control signals for generating simulated first and second sonar signals at said input/output terminal means and having substantially the same frequency as the carrier frequency of said distance measuring system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification