Doppler radar kinemometer
First Claim
1. A Doppler radar kinemometer, comprising a first Doppler radar antenna and a second Doppler radar antenna mechanically connected to one another with respective axes thereof at a predetermined angle between 60°
- and 120°
;
a first wave generator and signal processor assembly connected to said first antenna;
a second wave generator and signal processor assembly independent of said first assembly and connected to said second antenna;
the wave generator of said first assembly supplying ultrahigh frequency first waves of a first predetermined frequency to said first antenna, and said signal processor of said first assembly receiving the Doppler frequency of said first waves as received by said first antenna;
the wave generator of said second assembly supplying ultrahigh frequency second waves of a second predetermined frequency different from said first frequency to said second antenna, and said signal processor of said second assembly receiving the Doppler frequency of said second waves as received by said second antenna;
each said signal processor providing an output representing the corresponding Doppler frequency; and
a computer connected to said signal processors and calculating velocity based on the respective outputs thereof.
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Accused Products
Abstract
The invention concerns a Doppler radar kinemometer intended to measure the speed of a railway vehicle. According to the invention, it includes two antennas (1,2) mechanically connected to one another such that their axes form a determined angle between them. This angle is preferably between 60° and 120°. For safety operation, the antennas are each supplied with ultrahigh frequency waves (F1,F2) by their own wave generators (4,5), and each furnishes corresponding Doppler frequencies (Fd1,Fd2) to a distinct processing unit (11,12), with the signals coming from these two processing units then processed within a computing assembly (15) which supplies the value of the measured velocity.
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Citations
11 Claims
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1. A Doppler radar kinemometer, comprising a first Doppler radar antenna and a second Doppler radar antenna mechanically connected to one another with respective axes thereof at a predetermined angle between 60°
- and 120°
;
a first wave generator and signal processor assembly connected to said first antenna;
a second wave generator and signal processor assembly independent of said first assembly and connected to said second antenna;
the wave generator of said first assembly supplying ultrahigh frequency first waves of a first predetermined frequency to said first antenna, and said signal processor of said first assembly receiving the Doppler frequency of said first waves as received by said first antenna;
the wave generator of said second assembly supplying ultrahigh frequency second waves of a second predetermined frequency different from said first frequency to said second antenna, and said signal processor of said second assembly receiving the Doppler frequency of said second waves as received by said second antenna;
each said signal processor providing an output representing the corresponding Doppler frequency; and
a computer connected to said signal processors and calculating velocity based on the respective outputs thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- and 120°
Specification