JPS56143972A - Radar apparatus - Google Patents
Radar apparatusInfo
- Publication number
- JPS56143972A JPS56143972A JP4726880A JP4726880A JPS56143972A JP S56143972 A JPS56143972 A JP S56143972A JP 4726880 A JP4726880 A JP 4726880A JP 4726880 A JP4726880 A JP 4726880A JP S56143972 A JPS56143972 A JP S56143972A
- Authority
- JP
- Japan
- Prior art keywords
- transmission
- low
- altitude
- multipulse
- equation
- 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
- G01S13/66—Radar-tracking systems; Analogous systems
- G01S13/68—Radar-tracking systems; Analogous systems for angle tracking only
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 remove multipulse effect for low-altitude targets by using one of the receiving antenna elements disposed in a vertical direction for transmission, too, and subjecting the respective received signals to prescribed phase correction then complex-adding these. CONSTITUTION:The signals received by N-1 pieces of receiving antenna elements 19... disposed at prescribed intervals in the position of a height hi in one row in a vertical direction and the transmission-reception antenna 18 of the lowermost position etc. as well as the distance measurement information R0 etc. by a transmission- reception switching machine 22, a transmitter 21, a distance measuring device 23 and a receiver 23 are applied to a signal processing device 24. These received signals are phase-corrected by the coefft. ti based on the equation I and are subjected to complex-addition processing. Thereby, the multipulse effect by the indirectly reflected waves 10... from a low-altitude target 7 reflected from the sea surface etc. 11 is removed. Hence, the highly accurate detection and tracking are accomplished for low-altitude objects as well. In the equation, theta0 is the variable in signal processing, K is a constant and lambda is transmission wavelength.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4726880A JPS56143972A (en) | 1980-04-10 | 1980-04-10 | Radar apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4726880A JPS56143972A (en) | 1980-04-10 | 1980-04-10 | Radar apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56143972A true JPS56143972A (en) | 1981-11-10 |
JPH0137710B2 JPH0137710B2 (en) | 1989-08-09 |
Family
ID=12770543
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4726880A Granted JPS56143972A (en) | 1980-04-10 | 1980-04-10 | Radar apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56143972A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006078342A (en) * | 2004-09-09 | 2006-03-23 | Toshiba Corp | Height measurement radar apparatus and its angle measurement processing method |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS548219A (en) * | 1977-06-17 | 1979-01-22 | Lucas Industries Ltd | Fuel pump device |
JPS5482191A (en) * | 1977-12-14 | 1979-06-30 | Japan Radio Co Ltd | Incoming wave signal incident angle detecting system |
-
1980
- 1980-04-10 JP JP4726880A patent/JPS56143972A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS548219A (en) * | 1977-06-17 | 1979-01-22 | Lucas Industries Ltd | Fuel pump device |
JPS5482191A (en) * | 1977-12-14 | 1979-06-30 | Japan Radio Co Ltd | Incoming wave signal incident angle detecting system |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006078342A (en) * | 2004-09-09 | 2006-03-23 | Toshiba Corp | Height measurement radar apparatus and its angle measurement processing method |
Also Published As
Publication number | Publication date |
---|---|
JPH0137710B2 (en) | 1989-08-09 |
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