RADAR APPARATUS AND ANTENNA APPARATUS

• US 20150229033A1
• Filed: 05/30/2014
• Published: 08/13/2015
• Est. Priority Date: 06/03/2013
• Status: Active Grant

• Current Assignee: HL Klemove Corporation
• Original Assignee: Mando Corporation (Halla Holdings Corporation)
• Inventors: CHOI, Seung Un, JEONG, Seong Hee
• Granted Patent: US 9,964,631 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G01S 13/42 Simultaneous measurement of distance and other co-ordinates indirect measurement G01S13/46
• CPC Class Codes: G01S 13/58 Velocity or trajectory determination systems; Sense-of-movement determination systems
• CPC Class Codes: G01S 7/03 Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver
• CPC Class Codes: G01S 7/032 Constructional details for solid-state radar subsystems
• CPC Class Codes: G01S 7/2813 Means providing a modification of the radiation pattern for cancelling noise, clutter or interfering signals, e.g. side lobe suppression, side lobe blanking, null-steering arrays specially adapted to secondary radar systems G01S13/762; aerials or aerials systems H01Q21/29, H01Q25/00
• CPC Class Codes: H01Q 21/08 the units being spaced along or adjacent to a rectilinear path waveguide fed H01Q21/0037
• CPC Class Codes: H01Q 3/2611 Means for null steering; Adaptive interference nulling
• CPC Class Codes: H01Q 3/2635 the auxiliary unit being composed of a plurality of antennas

Abstract

Disclosed are a radar apparatus and an antenna apparatus. In particular, disclosed are a radar apparatus and an antenna apparatus including an antenna structure capable of suppressing a grating lobe while enhancing resolution.

Claims

1. A radar apparatus comprising:

a transmission unit including a plurality of transmission antennas which are arranged at a predetermined transmission antenna interval, and configured to radiate a transmission signal using the plurality of transmission antennas;

a reception unit including a plurality of reception antennas which are arranged at a predetermined reception antenna interval, and configured to receive a reception signal when the transmission signal is reflected by an object, through the plurality of reception antennas; and

a signal processing unit configured to detect the object based on the reception signal received by the reception unit.

2. The radar apparatus of claim 1, wherein the reception antenna interval is determined based on the number of the transmission antennas and the transmission antenna interval.

3. The radar apparatus of claim 1, further comprising:

a virtual reception antenna forming unit configured to perform a control such that a plurality of virtual reception antennas is formed according to an arrangement structure of the plurality of transmission antennas and the plurality of reception antennas.

4. The radar apparatus of claim 3, wherein the virtual reception antenna forming unit performs a control such that the plurality of virtual reception antennas are formed to be disposed to spaces between every two adjacent reception antennas, respectively.

5. The radar apparatus of claim 4, wherein the virtual reception antenna forming unit determines an interval between reception end antennas including the plurality of reception antennas and the plurality of virtual reception antennas based on the number of he transmission antennas and the reception antenna interval, and performs the control such that the plurality of virtual reception antennas are formed to be dispersed to the spaces, each of which is formed between every two adjacent reception antennas according to the determined interval.

6. The radar apparatus of claim 3, wherein the signal processing unit detects a distance to the object, a velocity of the object, and a bearing of the object based on a real reception signal received through the plurality of reception antennas and a virtual reception signal estimated to be virtually received through the plurality of virtual reception antennas.

7. The radar apparatus of claim 6, wherein the signal processing unit compensates for an phase difference between signals with respect to the real reception signal received through the plurality of reception antennas and the virtual reception signal estimated to be virtually received through the plurality of virtual reception antennas, and detects the distance to the object, the velocity of the object, and the bearing of the object based on one synthesized signal obtained by synthesizing the reception signals which are received and subjected to the compensation for phase difference.

8. The radar apparatus of claim 6, wherein the signal processing unit recognizes reception end antennas including the plurality of reception antennas and the plurality of virtual reception antennas as a plurality of reception antenna groups, based on arrangement positions of the plurality of reception antennas and the plurality of virtual reception antennas, and detects the distance to the object, the velocity of the object and the bearing of the object, based on a reception signal received through each of the reception antenna groups.

9. An antenna apparatus for signal transmission/reception, comprising:

a transmission antenna unit including a plurality of transmission antennas arranged at a predetermined transmission antenna interval; and

a reception antenna unit including a plurality of reception antennas arranged at a reception antenna interval which is determined on the transmission antenna interval.

10. The antenna apparatus of claim 9, further comprising:

a virtual reception antenna forming unit configured to perform a control such that a plurality of virtual reception antennas is formed according to an arrangement structure of the plurality of transmission antennas and the plurality of reception antennas.