JPS57178171A - Plan position indication of range scale - Google Patents
Plan position indication of range scaleInfo
- Publication number
- JPS57178171A JPS57178171A JP6253081A JP6253081A JPS57178171A JP S57178171 A JPS57178171 A JP S57178171A JP 6253081 A JP6253081 A JP 6253081A JP 6253081 A JP6253081 A JP 6253081A JP S57178171 A JPS57178171 A JP S57178171A
- Authority
- JP
- Japan
- Prior art keywords
- range
- displayed
- finely
- display
- scale
- 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
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/04—Display arrangements
- G01S7/06—Cathode-ray tube displays or other two dimensional or three-dimensional displays
- G01S7/22—Producing cursor lines and indicia by electronic means
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Radar Systems Or Details Thereof (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
PURPOSE:To finely display scale of range by one display, by optionally marking a range scale shown in the radial direction. CONSTITUTION:When a plan position indicator (PPI) is controlled by combining a scanning signal which is varied as desired such as a logarithmic variation, and sine and cosine signals corresponding to the direction, etc., a range scale displayed in the radial direction is logarithmically displayed; a short range is finely and a long range is coasely displayed or the range is displayed same as the above at the equally scaled intervals. According to this constitution, diferent ranges are displayed finely by this one display without range switching, etc., and a PPI being effective for a sonar, a radar, etc. is obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6253081A JPS57178171A (en) | 1981-04-27 | 1981-04-27 | Plan position indication of range scale |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6253081A JPS57178171A (en) | 1981-04-27 | 1981-04-27 | Plan position indication of range scale |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57178171A true JPS57178171A (en) | 1982-11-02 |
Family
ID=13202838
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6253081A Pending JPS57178171A (en) | 1981-04-27 | 1981-04-27 | Plan position indication of range scale |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57178171A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63191983A (en) * | 1987-02-04 | 1988-08-09 | Nec Corp | Logarithmic range radar equipment |
JPS646883A (en) * | 1987-06-30 | 1989-01-11 | Nec Corp | Radar display system |
-
1981
- 1981-04-27 JP JP6253081A patent/JPS57178171A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63191983A (en) * | 1987-02-04 | 1988-08-09 | Nec Corp | Logarithmic range radar equipment |
JPS646883A (en) * | 1987-06-30 | 1989-01-11 | Nec Corp | Radar display system |
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