BE501772A - - Google Patents
Info
- Publication number
- BE501772A BE501772A BE501772A BE501772A BE501772A BE 501772 A BE501772 A BE 501772A BE 501772 A BE501772 A BE 501772A BE 501772 A BE501772 A BE 501772A BE 501772 A BE501772 A BE 501772A
- Authority
- BE
- Belgium
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
- G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
- G01S11/02—Systems for determining distance or velocity not using reflection or reradiation using radio waves
-
- 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
-
- 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
- G01S13/87—Combinations of radar systems, e.g. primary radar and secondary radar
- G01S13/878—Combination of several spaced transmitters or receivers of known location for determining the position of a transponder or a reflector
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/04—Reversed telephoto objectives
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Optics & Photonics (AREA)
- Radar Systems Or Details Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB612850A GB671737A (en) | 1950-03-10 | 1950-03-10 | Improvements in or relating to radar systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE501772A true BE501772A (no) | 1951-03-31 |
Family
ID=9808932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE501772A BE501772A (no) | 1950-03-10 | 1951-03-09 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE501772A (no) |
| GB (1) | GB671737A (no) |
| NL (2) | NL251955A (no) |
-
0
- NL NL66525D patent/NL66525C/xx active
- NL NL251955D patent/NL251955A/xx unknown
-
1950
- 1950-03-10 GB GB612850A patent/GB671737A/en not_active Expired
-
1951
- 1951-03-09 BE BE501772A patent/BE501772A/fr unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB671737A (en) | 1952-05-07 |
| NL251955A (no) | 1900-01-01 |
| NL66525C (no) | 1900-01-01 |