NL172187C - Radio-navigatie-inrichting. - Google Patents
Radio-navigatie-inrichting.Info
- Publication number
- NL172187C NL172187C NLAANVRAGE7109881,A NL7109881A NL172187C NL 172187 C NL172187 C NL 172187C NL 7109881 A NL7109881 A NL 7109881A NL 172187 C NL172187 C NL 172187C
- Authority
- NL
- Netherlands
- Prior art keywords
- navigation device
- radio navigation
- radio
- navigation
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
- H04B7/0822—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection according to predefined selection scheme
-
- 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
- G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
- G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
- H01Q21/26—Turnstile or like antennas comprising arrangements of three or more elongated elements disposed radially and symmetrically in a horizontal plane about a common centre
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/24—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the orientation by switching energy from one active radiating element to another, e.g. for beam switching
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Signal Processing (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Radar Systems Or Details Thereof (AREA)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7026432A FR2112029B1 (nl) | 1970-07-17 | 1970-07-17 | |
FR7026433A FR2108146B1 (nl) | 1970-07-17 | 1970-07-17 | |
FR7117979A FR2137312B2 (nl) | 1970-07-17 | 1971-05-18 | |
FR7117978A FR2135115B2 (nl) | 1970-07-17 | 1971-05-18 |
Publications (2)
Publication Number | Publication Date |
---|---|
NL7109881A NL7109881A (nl) | 1972-01-19 |
NL172187C true NL172187C (nl) | 1983-07-18 |
Family
ID=27446069
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NLAANVRAGE7109881,A NL172187C (nl) | 1970-07-17 | 1971-07-16 | Radio-navigatie-inrichting. |
Country Status (10)
Country | Link |
---|---|
US (1) | US3747101A (nl) |
JP (1) | JPS5316677B1 (nl) |
AU (1) | AU457255B2 (nl) |
BE (1) | BE769039A (nl) |
CA (1) | CA938354A (nl) |
DE (1) | DE2135737C2 (nl) |
GB (1) | GB1333804A (nl) |
LU (1) | LU63543A1 (nl) |
NL (1) | NL172187C (nl) |
NO (1) | NO131692C (nl) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5559756U (nl) * | 1978-10-20 | 1980-04-23 | ||
JPH01141846U (nl) * | 1988-03-25 | 1989-09-28 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2994081A (en) * | 1953-03-06 | 1961-07-25 | Edward C Jordan | Radio direction finder |
DE1123000B (de) * | 1958-07-16 | 1962-02-01 | Standard Elektrik Lorenz Ag | Anordnung zur drahtlosen Richtungsbestimmung auf Grund des Dopplereffektes |
-
1971
- 1971-06-25 BE BE769039A patent/BE769039A/xx not_active IP Right Cessation
- 1971-06-30 US US00158486A patent/US3747101A/en not_active Expired - Lifetime
- 1971-07-08 GB GB3223471A patent/GB1333804A/en not_active Expired
- 1971-07-13 AU AU31135/71A patent/AU457255B2/en not_active Expired
- 1971-07-14 JP JP5283971A patent/JPS5316677B1/ja active Pending
- 1971-07-15 LU LU63543D patent/LU63543A1/xx unknown
- 1971-07-16 NO NO2738/71A patent/NO131692C/no unknown
- 1971-07-16 NL NLAANVRAGE7109881,A patent/NL172187C/nl not_active IP Right Cessation
- 1971-07-16 DE DE2135737A patent/DE2135737C2/de not_active Expired
- 1971-07-16 CA CA118476A patent/CA938354A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NO131692C (nl) | 1975-07-09 |
GB1333804A (en) | 1973-10-17 |
US3747101A (en) | 1973-07-17 |
AU3113571A (en) | 1973-01-18 |
DE2135737C2 (de) | 1982-09-09 |
DE2135737A1 (de) | 1972-01-20 |
CA938354A (en) | 1973-12-11 |
AU457255B2 (en) | 1975-01-23 |
NO131692B (nl) | 1975-04-01 |
LU63543A1 (nl) | 1971-11-16 |
JPS5316677B1 (nl) | 1978-06-02 |
NL7109881A (nl) | 1972-01-19 |
BE769039A (fr) | 1971-11-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
V1 | Lapsed because of non-payment of the annual fee |