US5325097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multimode radar for road vehicle blind-zone target discrimination
Assignee: Delphi Technologies Inc
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Filing: 1993-06-01
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Granted: 1994-06-28
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Expires: 2013-06-01
Abstract
Abstract A road vehicle radar system for discriminating between hazard and non-hazard targets within a predetermined zone uses a pair of frequency modulated continuous wave radar cycles (FM-CW) and a single continuous wave cycle (CW) in the generation of radar quantities for measuring target range and apparent target velocity. Measured quantities from the FM-CW and CW cycles are compared with predetermined quantities for discriminating between hazard and non-hazard targets.
Inventors
- 👤 Zhaohong Zhang
- 👤 Michael J. Shorkey
- 👤 Fie A. Liem
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:38
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/50; G01S13/58; G01S13/583; G01S13/584; G01S13/06; G01S13/08; G01S13/32; G01S13/34; G01S13/88; G01S13/93; G01S13/931; G01S13/345; G01S2013/9315; G01S2013/932; G01S2013/9322; G01S2013/9327; G01S2013/93272; G01S2013/93274
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
111 words
A road vehicle radar system for discriminating between hazard and non-hazard targets within a predetermined zone, the system comprising in combination: means for transmitting a pair of FM-CW radar signals; means for transmitting a CW radar signal; means for receiving the transmitted FM-CW and CW radar signals reflected from the target; means for determining a first apparent relative velocity of the target from the received FM-CW radar signals; means for determining a second apparent relative velocity of the target from the received CW radar signal; and means for comparing the first and second apparent relative velocities in magnitude to thereby determine from the difference therebetween whether the target is a hazard.
Claim 2
Dependent Claim
111 words
A road vehicle radar system for discriminating between hazard and non-hazard targets within a predetermined zone, the system comprising in combination: means for transmitting a pair of FM-CW radar signals; means for transmitting a CW radar signal; means for receiving the transmitted FM-CW and CW radar signals reflected from the target; means for determining a first apparent relative velocity of the target from the received FM-CW radar signals; means for determining a second apparent relative velocity of the target from the received CW radar signal; and means for comparing the first and second apparent relative velocities in magnitude to thereby determine from the difference therebetween whether the target is a hazard.
Claim 3
Dependent Claim
97 words
A road vehicle radar system for discriminating between hazard and non-hazard targets within a predetermined zone, the system comprising in combination: transmitting means for means for transmitting a pair of FM-CW radar signals and a CW radar signal; receiving means for receiving said transmitted FM-CW and CW radar signals reflected from a current target; means for determining a FM-CW doppler quantity from the received FM-CW radar signals and a CW doppler quantity from the received CW radar signal; and means for identifying contradictory FM-CW and CW doppler quantities to thereby establish the current target as a non-hazard.
Claim 4
Dependent Claim
97 words
A road vehicle radar system for discriminating between hazard and non-hazard targets within a predetermined zone, the system comprising in combination: transmitting means for means for transmitting a pair of FM-CW radar signals and a CW radar signal; receiving means for receiving said transmitted FM-CW and CW radar signals reflected from a current target; means for determining a FM-CW doppler quantity from the received FM-CW radar signals and a CW doppler quantity from the received CW radar signal; and means for identifying contradictory FM-CW and CW doppler quantities to thereby establish the current target as a non-hazard.
Claim 5
Dependent Claim
17 words
A road vehicle radar system according to claim 2 wherein said FM-CW radar signals are linearly modulated.
Claim 6
Dependent Claim
87 words
In a road vehicle radar system, a method for discriminating between hazard and non-hazard targets within a predetermined zone, comprising the steps of: transmitting a pair of FM-CW radar signals and a CW radar signal; receiving said transmitted FM-CW and CW radar signals reflected from a current target; determining a FM-CW doppler quantity from the received FM-CW radar signals and a CW doppler quantity from the received CW radar signal; and identifying contradictory FM-CW and CW doppler quantities to thereby establish the current target as a non-hazard.
Claim 7
Dependent Claim
87 words
In a road vehicle radar system, a method for discriminating between hazard and non-hazard targets within a predetermined zone, comprising the steps of: transmitting a pair of FM-CW radar signals and a CW radar signal; receiving said transmitted FM-CW and CW radar signals reflected from a current target; determining a FM-CW doppler quantity from the received FM-CW radar signals and a CW doppler quantity from the received CW radar signal; and identifying contradictory FM-CW and CW doppler quantities to thereby establish the current target as a non-hazard.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-06-27 | 1997-12-27 | 1998-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-06-27 | 2001-12-27 | 2002-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-06-27 | 2005-12-27 | 2006-06-28 | $7700.00 | Window Closed / Lapsed |