JPS5596471A - Encoded pulse compressor - Google Patents
Encoded pulse compressorInfo
- Publication number
- JPS5596471A JPS5596471A JP385879A JP385879A JPS5596471A JP S5596471 A JPS5596471 A JP S5596471A JP 385879 A JP385879 A JP 385879A JP 385879 A JP385879 A JP 385879A JP S5596471 A JPS5596471 A JP S5596471A
- Authority
- JP
- Japan
- Prior art keywords
- interval
- transmitted code
- code
- transmitted
- signals
- 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.)
- Granted
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
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/06—Systems determining position data of a target
- G01S13/08—Systems for measuring distance only
- G01S13/10—Systems for measuring distance only using transmission of interrupted, pulse modulated waves
- G01S13/26—Systems for measuring distance only using transmission of interrupted, pulse modulated waves wherein the transmitted pulses use a frequency- or phase-modulated carrier wave
- G01S13/28—Systems for measuring distance only using transmission of interrupted, pulse modulated waves wherein the transmitted pulses use a frequency- or phase-modulated carrier wave with time compression of received pulses
- G01S13/284—Systems for measuring distance only using transmission of interrupted, pulse modulated waves wherein the transmitted pulses use a frequency- or phase-modulated carrier wave with time compression of received pulses using coded pulses
- G01S13/288—Systems for measuring distance only using transmission of interrupted, pulse modulated waves wherein the transmitted pulses use a frequency- or phase-modulated carrier wave with time compression of received pulses using coded pulses phase modulated
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
PURPOSE:To reduce the unevenness of the compressing characteristic depending on the sample timing of the signals received by addition of the correlation outputs between the values sampled in the delaying elements at an interval of m and the transmitted code with the stages of the sampling cycles and the delaying elements set at m. CONSTITUTION:The signals transmitted from the transmitter are phase-detected on the receiving side to reproduce the transmitted code. The coded pulses X of the received signals thus reproduced are applied to an m-stage tapped analog delay line 11, sampled by clockpulses CP and then, transferred. The contents of the delay line 11 are detected by stages and weighted with a multiplier 12. The weight coefficient to multiply the output of each stage is set equivalent to the time inversion of the transmitted code in the repetition of each bit of the code every m times and the correlation is determined between the values sampled at a interval of m and the transmitted code. Then, one or several correlation outputs are added. For example, the tap outputs at the interval of m are grouped at one set and added with adders 13-1-m every set. Thus, m sets of compressed waves V1...Vm are obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP385879A JPS5596471A (en) | 1979-01-19 | 1979-01-19 | Encoded pulse compressor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP385879A JPS5596471A (en) | 1979-01-19 | 1979-01-19 | Encoded pulse compressor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5596471A true JPS5596471A (en) | 1980-07-22 |
JPS6244622B2 JPS6244622B2 (en) | 1987-09-21 |
Family
ID=11568878
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP385879A Granted JPS5596471A (en) | 1979-01-19 | 1979-01-19 | Encoded pulse compressor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5596471A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006170842A (en) * | 2004-12-16 | 2006-06-29 | Furuno Electric Co Ltd | Pulse compression device, detection device, and pulse compression method |
JP2014519038A (en) * | 2011-06-01 | 2014-08-07 | パナソニック株式会社 | High-speed, high-resolution, wide-range, low-power analog correlator and radar sensor |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51138102A (en) * | 1975-05-24 | 1976-11-29 | Japan Radio Co Ltd | M-series signal detection system |
-
1979
- 1979-01-19 JP JP385879A patent/JPS5596471A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51138102A (en) * | 1975-05-24 | 1976-11-29 | Japan Radio Co Ltd | M-series signal detection system |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006170842A (en) * | 2004-12-16 | 2006-06-29 | Furuno Electric Co Ltd | Pulse compression device, detection device, and pulse compression method |
JP2014519038A (en) * | 2011-06-01 | 2014-08-07 | パナソニック株式会社 | High-speed, high-resolution, wide-range, low-power analog correlator and radar sensor |
Also Published As
Publication number | Publication date |
---|---|
JPS6244622B2 (en) | 1987-09-21 |
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