Radar system and accurate method of range resolution

Details Radar system and accurate method of range resolution Radar system and accurate method of range resolution

1996-06-28

1997-12-09

Eldred, J. Woodrow

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

Determining distance

342134, 342139, G01S 1308

Patent

active

056965168

ABSTRACT:
In accordance with the teachings of the present invention, a radar system (20) and method of determining the range (R) to a remote target (14) is provided. The method includes computing a plurality of simulated M-dimensional points (x.sub.o (t)) as a function of return pulse arrival times over a range of expected return pulse arrival times (t.sub.1 through t.sub.2). The computed simulated points (x.sub.o (t)) are stored as function of return pulse arrival times in a memory (42) of the system (20). An antenna (10) is aligned in the direction of the remote target (14) and transmits at least one electromagnetic pulse (12) in the direction of the remote target (14) such that the pulse (12) reflects off the remote target (14) as a return pulse (16). The return pulse (16) is sampled at M different times representing a M-dimensional measured point (x). The measured point (x) is compared with each of the simulated points (x.sub.o (t)) stored in the memory (42) for determining which of the simulated points (x.sub.o (t)) and its corresponding pulse arrival time are closest to the measured point (x).

REFERENCES:
patent: 4954830 (1990-09-01), Krikorian et al.
patent: 5212489 (1993-05-01), Nelson
patent: 5504489 (1996-04-01), Kronhamn

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