JPS5451559A - Mimic target - Google Patents
Mimic targetInfo
- Publication number
- JPS5451559A JPS5451559A JP11760577A JP11760577A JPS5451559A JP S5451559 A JPS5451559 A JP S5451559A JP 11760577 A JP11760577 A JP 11760577A JP 11760577 A JP11760577 A JP 11760577A JP S5451559 A JPS5451559 A JP S5451559A
- Authority
- JP
- Japan
- Prior art keywords
- dots
- pulse
- receiving
- frequencies
- receiver
- 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
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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
- G01S7/523—Details of pulse systems
- G01S7/524—Transmitters
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
PURPOSE:To prevent howling and provide proportional relations to receiving and transmitting pulse signals by detecting the frequencies of the receiving pulse acoustic waves, outputting proportional electric signals and delaying and blocking the receiving pulse acoustic wave signal with a delay of a fixed time. CONSTITUTION:A control circuit M and a frequency variable oscillator F are added to an ordinary apparatus which receives the pulse acoustic wave dots Pi transmitted from an active sonar in a receiver R and transmits S the same as transmission pulse dots Po after various processing and amplification A. The control circuit M converts the signal, which comprise turning the input pulse acoustic wave dots Pi to pulse voltage dots Ei with the receiver R and turning to output dots Ei' with a blocking circuti B, to the voltage Em proportional to the frequencies and the oscillator F converts the same to dots Ef at a specified frequency conversion rate. These are then transmitted as transmission pulse dots Pi from the transmitter-receiver S via the gate circuit G and amplifier A. By this manner, proportional relations may be given to the frequencies between the transmitting and receiving pulses.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11760577A JPS5451559A (en) | 1977-09-29 | 1977-09-29 | Mimic target |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11760577A JPS5451559A (en) | 1977-09-29 | 1977-09-29 | Mimic target |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5451559A true JPS5451559A (en) | 1979-04-23 |
Family
ID=14715908
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11760577A Pending JPS5451559A (en) | 1977-09-29 | 1977-09-29 | Mimic target |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5451559A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5957181A (en) * | 1982-09-27 | 1984-04-02 | Nec Corp | Underwater stationary acoustic target |
-
1977
- 1977-09-29 JP JP11760577A patent/JPS5451559A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5957181A (en) * | 1982-09-27 | 1984-04-02 | Nec Corp | Underwater stationary acoustic target |
JPH0119551B2 (en) * | 1982-09-27 | 1989-04-12 | Nippon Electric Co |
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