SE8502433L - signal processor - Google Patents
signal processorInfo
- Publication number
- SE8502433L SE8502433L SE8502433A SE8502433A SE8502433L SE 8502433 L SE8502433 L SE 8502433L SE 8502433 A SE8502433 A SE 8502433A SE 8502433 A SE8502433 A SE 8502433A SE 8502433 L SE8502433 L SE 8502433L
- Authority
- SE
- Sweden
- Prior art keywords
- signal
- measuring channel
- filtered
- noise signals
- filtered signal
- Prior art date
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
- G01S13/50—Systems of measurement based on relative movement of target
- G01S13/52—Discriminating between fixed and moving objects or between objects moving at different speeds
- G01S13/522—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves
- G01S13/524—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi
- G01S13/5246—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi post processors for coherent MTI discriminators, e.g. residue cancellers, CFAR after Doppler filters
Abstract
A signal processor for detecting a coherent signal superimposed on noise signals, particularly non-stationary noise signals. The input signals S(t) are applied to a bank of adjacent filters 1, and the signal Sq filtered by one of the filters Fq is supplied to a first measuring channel 3 - 5 and to a second measuring channel 6 - 9; the outputs Sq<1)<t) and Sq<2)<t) are connected to a coincidence circuit 2; the first measuring channel is sensitive to the amplitude of the filtered signal and the second measuring channel is sensitive to the phase of the filtered signal. The coincidence circuit 2 delivers an output signal Sq<*)<t) if the amplitude of the filtered signal is greater than a threshold value Vd depending on the mean level of the noise signals and if the absolute value of the second derivative of the phase of the filtered signal is less than a threshold value V alpha determined by the acceptable probability of a false alarm. Application to automatic detecting devices, particularly in airborne Doppler radar systems. <IMAGE>
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8407759A FR2625326B1 (en) | 1984-05-18 | 1984-05-18 | NOISE COHERENT SIGNAL PROCESSOR AND APPLICATION TO DOPPLER RADAR SYSTEMS |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE8502433D0 SE8502433D0 (en) | 1985-05-15 |
| SE8502433L true SE8502433L (en) | 1992-06-20 |
Family
ID=9304140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE8502433A SE8502433L (en) | 1984-05-18 | 1985-05-15 | signal processor |
Country Status (4)
| Country | Link |
|---|---|
| FR (1) | FR2625326B1 (en) |
| GB (1) | GB2251526A (en) |
| IT (1) | IT8567437A0 (en) |
| SE (1) | SE8502433L (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5478010B2 (en) * | 2007-11-12 | 2014-04-23 | 株式会社デンソーアイティーラボラトリ | Electronic scanning radar equipment |
| FR3105403B1 (en) | 2019-12-19 | 2021-11-19 | Openfield | MICROWAVE RADAR DOPPLER FLOW METER FOR OIL WELLS |
| CN111736126B (en) * | 2020-06-01 | 2023-12-15 | 西安电子科技大学 | Signal processing method based on low-cost security radar |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1147237A (en) * | 1956-03-28 | 1957-11-20 | Csf | Improvements to electromagnetic pulse receivers |
| NL287919A (en) * | 1962-01-23 | |||
| DE2413607C2 (en) * | 1974-03-21 | 1983-05-19 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Arrangement for the suppression of signals from moving interference targets in a quadrature radar system |
| DE3007527C2 (en) * | 1980-02-28 | 1982-10-28 | Siemens AG, 1000 Berlin und 8000 München | Pulse Doppler radar device with a digital integration circuit for the video signals |
-
1984
- 1984-05-18 FR FR8407759A patent/FR2625326B1/en not_active Expired - Lifetime
-
1985
- 1985-05-13 GB GB8512086A patent/GB2251526A/en not_active Withdrawn
- 1985-05-14 IT IT8567437A patent/IT8567437A0/en unknown
- 1985-05-15 SE SE8502433A patent/SE8502433L/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| GB2251526A (en) | 1992-07-08 |
| IT8567437A0 (en) | 1985-05-14 |
| SE8502433D0 (en) | 1985-05-15 |
| FR2625326A1 (en) | 1989-06-30 |
| FR2625326B1 (en) | 1990-08-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ATE109912T1 (en) | METHOD AND SYSTEM FOR INTRUSION ALERT. | |
| JPS5774837A (en) | Signal detection system of optical information reproducing device | |
| DK215690D0 (en) | VOICE ACTIVITY DETECTOR | |
| FR2395560A1 (en) | CONTROL AND SURVEILLANCE SYSTEM | |
| ES472658A1 (en) | Alarm system | |
| FR2403683A1 (en) | OVERLOAD DETECTION CIRCUIT FOR PWM TYPE AMPLIFIER | |
| JPS6453623A (en) | Pulse detecting circuit employing amplitude and time recognition | |
| GB1392767A (en) | Ultrasonic alarm circuit | |
| EP0290413A3 (en) | Detector for sensing and/or measuring passing objects | |
| SE8502433L (en) | signal processor | |
| KR890015607A (en) | Frequency detector | |
| NO169921C (en) | DEVICE FOR DISPOSAL OF VESSELS | |
| JPS6429997A (en) | Environmental abnormality alarming facility | |
| US3967260A (en) | Intrusion alarm system with improved air turbulence compensation | |
| EP0368351A3 (en) | Coordinate input apparatus | |
| SU1124238A1 (en) | Foreign inclusion detector | |
| SU1656569A1 (en) | Device for monitoring and warning indication to protect equipment operating in emergency conditions | |
| SE8206678L (en) | SIGNAL AND / OR INFORMATION PROCESSING DEVICE | |
| JPS537165A (en) | Synchronism detecting circuit of phase control circuit | |
| SU117087A1 (en) | Piezoelectric sound measuring receiver (synchrophone) | |
| JPS52144247A (en) | Minimum/maximum level detection circuit | |
| JPS5640778A (en) | Magnetism failure detector | |
| FR2405609A1 (en) | Volume control system for public address network - uses detected level of output sound to control amplification of broadcast | |
| FR2428878A2 (en) | Automatic control for Doppler effect mini-radar intruder detector - has circuits which guard against risk of failure of oscillator diode and detector diode | |
| JPS5758516A (en) | Alarm system for vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NAV | Patent application has lapsed |
Ref document number: 8502433-9 Effective date: 19921201 |