Title:
RADAR SYSTEMS
Document Type and Number:
WIPO Patent Application WO/2019/138041
Kind Code:
A1
Abstract:
A radar system for air volume surveillance, the radar having a transmitter and receiver with separate antennas. The receiver aperture being relatively large compared with the transmitter aperture such that the receiving beam is narrower than the transmitting beam, which itself is relatively small compared with the volume to be surveyed. The radar having means to form multiple receiving beams simultaneously from the receiver aperture, the multiple receiving beams configured so that collectively they substantially match the angular volume of the transmitting beam; and in which the transmitter is arranged, when operating, to transmit a signal with a duty cycle greater than fifty percent. This arrangement provides simpler construction compared with duplex transmit/receive antennas, allows for higher duty cycles, avoids performance penalties associated with blanking of the receiver, and allows for a transmitter antenna to be physically smaller and lighter than the receiver antenna making it more straightforward for it to being mounted higher – an marked benefit when the transmit antenna is to be mounted on a ship or like platform.
Inventors:
KINGHORN ANTHONY (GB)
MOUNTFORD CHRISTOPHER (GB)
MOUNTFORD CHRISTOPHER (GB)
Application Number:
PCT/EP2019/050643
Publication Date:
July 18, 2019
Filing Date:
January 11, 2019
Export Citation:
Assignee:
LEONARDO MW LTD (GB)
International Classes:
G01S13/00; G01S13/02; G01S13/42; G01S13/536
Foreign References:
| US20150070208A1 | 2015-03-12 | |||
| US20150048965A1 | 2015-02-19 | |||
| US20100253574A1 | 2010-10-07 |
Other References:
None
Attorney, Agent or Firm:
TOLFREE, Adam (GB)
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