JPS5744870A - Double sweep picture display system - Google Patents
Double sweep picture display systemInfo
- Publication number
- JPS5744870A JPS5744870A JP55119381A JP11938180A JPS5744870A JP S5744870 A JPS5744870 A JP S5744870A JP 55119381 A JP55119381 A JP 55119381A JP 11938180 A JP11938180 A JP 11938180A JP S5744870 A JPS5744870 A JP S5744870A
- Authority
- JP
- Japan
- Prior art keywords
- memory
- radar
- picture
- radar echo
- ppi
- 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 a PPI radar picture from disappearing, by a method wherein radar echo signals are stored in a memory and read reversely during retrace time in order to make pictures overlap with each other in reverse sweep. CONSTITUTION:The radar echo data stored in an analog memory 9 are sampled and temporarily stored in a digital memory 10. The content of said memory 10 is reversely read out by means of the reverse readout pulse generated during retrace time by means of a timing signal generator 11 in accordance with a trigger pulse generator 1, and a radar echo picture in reverse sweep is displayed on a PPI scope 8 in an overlapping manner. Accordingly, the radar picture is prevented from disappearing from the PPI scope even when the radar echo signal is interrupted because of another picture display.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55119381A JPS5744870A (en) | 1980-08-29 | 1980-08-29 | Double sweep picture display system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55119381A JPS5744870A (en) | 1980-08-29 | 1980-08-29 | Double sweep picture display system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5744870A true JPS5744870A (en) | 1982-03-13 |
Family
ID=14760095
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55119381A Pending JPS5744870A (en) | 1980-08-29 | 1980-08-29 | Double sweep picture display system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5744870A (en) |
-
1980
- 1980-08-29 JP JP55119381A patent/JPS5744870A/en active Pending
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