Communications: directive radio wave systems and devices (e.g. – Determining velocity – Combined with determining distance
Patent
1986-07-02
1988-04-26
Tubbesing, T. H.
Communications: directive radio wave systems and devices (e.g.,
Determining velocity
Combined with determining distance
342114, 342115, 342173, G01S 1362
Patent
active
047400455
ABSTRACT:
A multiple parameter doppler radar system transmits a radar signal which is alternated between a first and second frequency toward a target. The doppler shifted signals reflected from the target are received and processed to derive a pair of doppler signals related respectively to the first and second frequency signals. The frequency of one of the doppler signals is measured and scaled to a target speed. The phase magnitude between the two doppler signals is measured and scaled to a target range. The phase lead/lag relationship of the two doppler signals is detected to determine if the target is moving toward or away from the radar system. The components of the system are controlled by a microprocessor which is programmed to perform quality determinations on the data derived from the signals to assess the reliability of the data even in a multiple target environment prior to displaying the parameters of target motion.
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Alden John R.
Goodson William D.
Day Wm. Bruce
Goodson & Associates, Inc.
Tubbesing T. H.
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