Radar process for the measurement of distances and relative spee

Details Radar process for the measurement of distances and relative spee Radar process for the measurement of distances and relative spee

1996-10-10

1998-05-26

Sotomayor, John B.

Communications: directive radio wave systems and devices (e.g.,

Return signal controls external device

Radar mounted on and controls land vehicle

342111, 342116, G01S 1360, G01S 1393

Patent

active

057573085

ABSTRACT:
In the particular embodiment disclosed in the specification, a CW radar process for measurement of distances and relative speeds between a vehicle and one or more obstructions including transmitting a sequence of constant-frequency radar signal bursts which follow one another without any time interval during four successive measurements. In the first measurement, the radar signal bursts are of sequentially increasing frequency and in the second measurement they are of sequentially decreasing frequency while in the third measurement they have the same frequency and in the fourth measurement the burst frequencies follow a coded pattern. Demodulation of the signals which are reflected by obstructions is carried out by mixing them with the transmitted signals using only one single-channel mixer providing an output signal which is not the signal of a phase curve but of an amplitude curve.

REFERENCES:
patent: 3786509 (1974-01-01), Applebaum et al.
patent: 4045797 (1977-08-01), Krage
patent: 4276549 (1981-06-01), Tomasi
patent: 4901083 (1990-02-01), May et al.
patent: 4970519 (1990-11-01), Minnis et al.
patent: 5252981 (1993-10-01), Grein et al.
patent: 5274380 (1993-12-01), Yatsuka et al.
patent: 5359331 (1994-10-01), Adler

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