JPS64479A - Automatic gain controller - Google Patents
Automatic gain controllerInfo
- Publication number
- JPS64479A JPS64479A JP15572687A JP15572687A JPS64479A JP S64479 A JPS64479 A JP S64479A JP 15572687 A JP15572687 A JP 15572687A JP 15572687 A JP15572687 A JP 15572687A JP S64479 A JPS64479 A JP S64479A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- receiver
- frequency
- signals
- modulated
- 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
Landscapes
- Radar Systems Or Details Thereof (AREA)
Abstract
PURPOSE: To prevent the deterioration in signal reception sensitivity by alternating and using the image side signals of an image rejection mixer.
CONSTITUTION: The pulse-modulated high-frequency signal generated by a signal transmitter 2 by a trigger signal TP from a synchronizer 1 is radiated via a duplexer 3 and an antenna 4 and is reflected by a target; thereafter, the signal is frequency-modulated by the local signal from a local oscillator 6 in the image rejection mixer 5. Two kinds of the signals SU, SV of the side band where the reflected wave outputted from the mixer 5 exists and the side band where the reflected wave does not exist are then transmitted to an alternating switch 11. The switch 11 alternates the frequency-modulated signals SU, SV by control of the gate signal TG from the synchronizer 1 and transmits the same as an IF signal SIF to a signal receiver 7. The reception video signal RV outputted from the receiver 7 is subjected to the sample hold 8 by the signal TG and is fed back as a gain control signal VC via a loop filter circuit 10 to the receiver 7. The gain control is thus executed.
COPYRIGHT: (C)1989,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62-155726A JPH01479A (en) | 1987-06-23 | automatic gain control device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62-155726A JPH01479A (en) | 1987-06-23 | automatic gain control device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS64479A true JPS64479A (en) | 1989-01-05 |
JPH01479A JPH01479A (en) | 1989-01-05 |
Family
ID=
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06281724A (en) * | 1993-03-26 | 1994-10-07 | Koden Electron Co Ltd | Sampling receiver |
WO2013140712A1 (en) * | 2012-03-23 | 2013-09-26 | パナソニック株式会社 | Self-heterodyne detection system and radar device provided therewith |
JP6797339B1 (en) * | 2020-03-13 | 2020-12-09 | 三菱電機株式会社 | Radar device |
CN112204421A (en) * | 2018-06-07 | 2021-01-08 | 三菱电机株式会社 | Radar apparatus |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06281724A (en) * | 1993-03-26 | 1994-10-07 | Koden Electron Co Ltd | Sampling receiver |
WO2013140712A1 (en) * | 2012-03-23 | 2013-09-26 | パナソニック株式会社 | Self-heterodyne detection system and radar device provided therewith |
CN112204421A (en) * | 2018-06-07 | 2021-01-08 | 三菱电机株式会社 | Radar apparatus |
CN112204421B (en) * | 2018-06-07 | 2023-06-16 | 三菱电机株式会社 | Radar apparatus, control circuit, and program storage medium |
JP6797339B1 (en) * | 2020-03-13 | 2020-12-09 | 三菱電機株式会社 | Radar device |
WO2021181658A1 (en) * | 2020-03-13 | 2021-09-16 | 三菱電機株式会社 | Radar device |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0987561A3 (en) | Holographic radar | |
US4524361A (en) | Radar systems employing two kinds of pulses | |
EP0316879A3 (en) | Radio with broad band automatic gain control circuit | |
CA2074411A1 (en) | Target height determination system using directly and indirectly reflected signals | |
JPS64479A (en) | Automatic gain controller | |
JPS5552683A (en) | Control system for specified video program | |
SE8700329L (en) | RADARANLEGGNING | |
JPS57125868A (en) | Side looking aperture radar | |
GB1570279A (en) | Pulse radar apparatus | |
JPS5473599A (en) | Microwave ingression alarm apparatus | |
JPS5692480A (en) | Radio wave transmitter | |
JPH0527019A (en) | Chirp radar device | |
JPS5790178A (en) | Transmission frequency shifting system for radar | |
JPS57140042A (en) | Transmitting power controller in satellite communication | |
JPS62123577U (en) | ||
JPS6039579A (en) | Tracking radar | |
GB2143100A (en) | Radar receiver assembly | |
JPS61157870U (en) | ||
JPS62114377U (en) | ||
WO1979000937A1 (en) | Intermediate frequency sensing circuit | |
JPS5242395A (en) | Radar unit | |
JPS6373682U (en) | ||
JPS61173076U (en) | ||
JPS62114379U (en) | ||
JPH0416380U (en) |