发明名称 |
INTERFERENCE AVOIDANCE SYSTEM FOR VEHICULAR RADAR SYSTEM |
摘要 |
An interference avoidance system used in conjunction with a vehicular target detection system. The microwave transceiver section (102) of the vehicular target detection system, in which the present invention is incorporated, transmits and receives time-multiplexed microwave signals (104) having at least two channels (frequencies) spaced about 250 kHz apart. The time-multiplexed transmit signal is transmitted and strikes objects (targets) in the environment, and a portion of the transmit signal is reflected back to the antenna. A difference signal having a frequency equal to the difference between the frequency of the transmit and the received signal is generated, digitized, and a Fast Fourier Transform (FFT) is performed on the digitized difference signal. A microcontroller (106) analyzes the energy spectrum to determine whether there is interference present. If such interference is present, the microcontroller causes the transmit frequency to change until a frequency is found which is relatively free of the interference. |
申请公布号 |
WO9404939(A1) |
申请公布日期 |
1994.03.03 |
申请号 |
WO1993US07506 |
申请日期 |
1993.08.09 |
申请人 |
VORAD SAFETY SYSTEMS, INC. |
发明人 |
SHERRY, RUSSELL, F.;WOLL, JERRY, D.;MALAN, VAN, R. |
分类号 |
G01S7/36;G01S7/02;G01S7/288;G01S7/35;G01S7/40;G01S7/42;G01S13/02;G01S13/24;G01S13/38;G01S13/60;G01S13/93;(IPC1-7):G01S7/292 |
主分类号 |
G01S7/36 |
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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