JPS55125465A - Echo sounder - Google Patents

Echo sounder

Info

Publication number
JPS55125465A
JPS55125465A JP3237079A JP3237079A JPS55125465A JP S55125465 A JPS55125465 A JP S55125465A JP 3237079 A JP3237079 A JP 3237079A JP 3237079 A JP3237079 A JP 3237079A JP S55125465 A JPS55125465 A JP S55125465A
Authority
JP
Japan
Prior art keywords
gate circuit
signal
bpf
sounder
echo
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP3237079A
Other languages
Japanese (ja)
Inventor
Takayoshi Hirata
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP3237079A priority Critical patent/JPS55125465A/en
Publication of JPS55125465A publication Critical patent/JPS55125465A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
    • G01S15/06—Systems determining the position data of a target
    • G01S15/08—Systems for measuring distance only
    • G01S15/10—Systems for measuring distance only using transmission of interrupted, pulse-modulated waves
    • G01S15/18—Systems for measuring distance only using transmission of interrupted, pulse-modulated waves wherein range gates are used

Abstract

PURPOSE:To obtain an echo sounder, the dynamic range of which is not restricted, with a simple configuration by producing a reception beat signal by means of a gate circuit, which is controlled by a transmission pulse, and BPF. CONSTITUTION:The voltage control oscillator 2 produces a square wave signal, which increases or decreases the synchronism for a fixed time, through the voltage scanning circuit 1, an ultrasonic pulse is transmitted to the object by the amplifier 3 and transmitter 4. On the other hand, the square wave signal is fed to the gate circuit as a control signal to control the turning operation of the gate circuit 7, and a beat signal, the frequency and amplitude of which are corresponding to both the distance between the device and the object and the intensity of echo from the object, by the reception pulse reflected by the object is produced by the BPF 8 without a complicated multiplier. Accordingly the sounder can be simplified in structure, the restriction on the dynamic range in using the multiplier can be eliminated to improve the sounding precision.
JP3237079A 1979-03-22 1979-03-22 Echo sounder Pending JPS55125465A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3237079A JPS55125465A (en) 1979-03-22 1979-03-22 Echo sounder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3237079A JPS55125465A (en) 1979-03-22 1979-03-22 Echo sounder

Publications (1)

Publication Number Publication Date
JPS55125465A true JPS55125465A (en) 1980-09-27

Family

ID=12357049

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3237079A Pending JPS55125465A (en) 1979-03-22 1979-03-22 Echo sounder

Country Status (1)

Country Link
JP (1) JPS55125465A (en)

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