INTEGRATED RADAR SYSTEM AND VEHICLE CONTROL SYSTEM
An integrated radar system and a vehicle control system are provided. More particularly, an antenna structure that can sense multiple distances using multiple beams, an integrated radar system using the same, and a vehicle control system that performs vehicle control through multiple distance sensing of a target are provided.
1 . An integrated radar system comprising:
a transmission antenna unit including a plurality of transmission antenna groups having different sensing ranges; and
a reception antenna group receiving reception signals through multiple channels.
2 . The integrated radar system as claimed in claim 1 , wherein each of the plurality of transmission antenna groups has an antenna structure in which one or more transmission antennas are arranged according to one or more of the number of antennas and an antenna interval, which are for differently setting one or more of a maximum sensing distance and a maximum sensing angle so that the transmission antennas have different sensing ranges.
3 . The integrated radar system as claimed in claim 2 , wherein the maximum sensing distance is in proportion to the number of transmission antennas, and the maximum sensing angle is in reverse proportion to a value that is obtained by multiplying the number of the transmission antennas by an antenna interval.
4 . The integrated radar system as claimed in claim 2 , wherein the plurality of transmission antenna groups includes two or more of
a short-distance transmission antenna group having a short-distance sensing range in which the maximum sensing distance is set to a short-distance value and the maximum sensing angle is set to a wide angle value;
an intermediate-distance transmission antenna group having an intermediate-distance sensing range in which the maximum sensing distance is set to an intermediate-distance value and the maximum sensing angle is set to an intermediate angle value; and
a long-distance transmission antenna group having a long-distance sensing range in which the maximum sensing distance is set to a long-distance value and the maximum sensing angle is set to a narrow angle value.
5 . The integrated radar system as claimed in claim 2 , wherein the plurality of transmission antenna groups has an antenna gain that is in proportion to the number of antennas and the maximum sensing distance.
6 . The integrated radar system as claimed in claim 1 , further comprising a transmission antenna switching unit selecting and switching a specified transmission antenna group having a specified sensing range among the plurality of transmission antenna groups to transmit the transmission signal to the specified sensing range.
7 . The integrated radar system as claimed in claim 6 , wherein the above-described transmission antenna switching unit performs switching of the specified transmission antenna groups having specified sensing ranges among the plurality of transmission antenna groups one by one in a time division method in order to simultaneously transmit the transmission signals to the plurality of specified sensing ranges.
8 . The integrated radar system as claimed in claim 6 , further comprising a control unit which controls the transmission antenna switching unit to perform switching of the plurality of transmission antenna groups, and performs vehicle control through target sensing by respective sensing ranges based on the reception signals.
9 . The integrated radar system as claimed in claim 1 , wherein each of the plurality of transmission antenna groups comprises one or more array antenna type transmission antennas.
10 . The integrated radar system as claimed in claim 1 , wherein the reception antenna unit comprises a plurality of array antenna type reception antennas.
11 . The integrated radar system as claimed in claim 1 , further comprising:
a transmission signal generation unit generating transmission signals;
a signal reception unit receiving reception signals in multiple channels through the reception antenna unit; and
an amplification and signal conversion unit amplifying and converting the reception signals into digital signals.
12 . A vehicle control system comprising:
a signal transmission unit transmitting a transmission signal through a specified transmission antenna group having a specified sensing range among a plurality of transmission antenna groups having different sensing ranges;
a signal reception unit receiving a reception signal, for which the transmission signal is reflected by a target that is located in the specified sensing range, through a reception antenna;
a target sensing unit sensing the target based on the reception signal; and
a control unit performing vehicle control using the result of the target sensing.
13 . The vehicle control system as claimed in claim 12 , wherein the plurality of transmission antenna groups includes two or more of
a short-distance transmission antenna group having a short-distance sensing range in which the maximum sensing distance is set to a short-distance value and the maximum sensing angle is set to a wide angle value;
an intermediate-distance transmission antenna group having an intermediate-distance sensing range in which the maximum sensing distance is set to an intermediate-distance value and the maximum sensing angle is set to an intermediate angle value; and
a long-distance transmission antenna group having a long-distance sensing range in which the maximum sensing distance is set to a long-distance value and the maximum sensing angle is set to a narrow angle value.
14 . The vehicle control system as claimed in claim 13 , wherein the maximum sensing distance is in proportion to the number of transmission antennas included in the corresponding transmission antenna group, and
the maximum sensing angle is in reverse proportion to a value that is obtained by multiplying the number of the transmission antennas included in the corresponding transmission antenna group by an antenna interval.