发明名称 |
FORFARANDE FOR ATT I EN RADARFYR FORHINDRA ATT FYREN SVARAR PA MOTTAGNA RADARPULSER FRAN EN SENDARANTENS SIDOLOBER SAMT ANORDNING FOR UTFORANDE AV FORFARANDET |
摘要 |
PCT No. PCT/SE80/00325 Sec. 371 Date Jul. 17, 1981 Sec. 102(e) Date Jul. 17, 1981 PCT Filed Dec. 8, 1980 PCT Pub. No. WO81/01747 PCT Pub. Date Jun. 25, 1981.A method for preventing a radar beacon's response to received pulses from a vessel which originate from the side lobes of the vessel antenna. The carrier frequency of the radar signal pulses to and received by the beacon is measured and a value of this frequency is stored when the amplitudes of the signal pulses exceed a certain high threshold level (Th). If signals after that are received which exceed a low threshold level (Tl) (but not the high) the carrier frequency of such signals is measured and a corresponding value is stored. Measuring two subsequent and equal carrier frequencies is considered as a criterion that a response signal from the beacon responding to the second received signal should not be transmitted. An arrangement to carry out the method is described. |
申请公布号 |
SE419002(B) |
申请公布日期 |
1981.07.06 |
申请号 |
SE19790010168 |
申请日期 |
1979.12.11 |
申请人 |
* TELEFON AB L M ERICSSON |
发明人 |
P M * CHARAS;P-O G * GUSTAVSSON;B A * MORWING |
分类号 |
G01S13/75;G01S13/76;G01S13/78;G01S13/79;(IPC1-7):01S13/80 |
主分类号 |
G01S13/75 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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