Download e-book for kindle: Precision FMCW Short-Range Radar for Industrial Applications by Boris A Atayants

By Boris A Atayants

This ebook describes equipment for making radar measurements of brief distances in purposes the place actual touch with fabrics is impractical.

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1686–1696. ] Atayants, B. , Gurzuf, 2001, pp. 246–247. ] Ezerskiy, V. , B. V. Kagalenko, and V. A. Bolonin, “Adaptive Frequency-Modulated Level Meter: An Analysis of Measurement Error Components,” Sensors and Systems, No. 7, 2002, p. 44. ] Patent No. 2151408 (Russian Federation). INT. CL. G01S 13/34. “Radar Range Finder,” B. F. Atayants, et al. Bull. No. 17. Published June 20, 2000. Ezerskiy, V. , “An Analysis of a Truncation Error of a Range Finder with Adaptive Frequency Modulation for Short-Range Radar,” Vestnik RGRTA, Ryazan.

To ensure optimal control by the modulating voltage, it is necessary at first to formulate the optimality criterion. We assume as such a criterion the absence of DFS phase jumps using the periodic FM. 2). 21) 2 Phase jump absence at changing the sign of the function’s wmod(t) derivative on the boundaries of modulation half-periods corresponds to the DFS extreme presence in these points. Hence, the integer number of the DFS half-periods should be stacked in the modulation half-period. At the variation of the range R, this can be performed by only changing appropriately the carrier frequency w0 and the frequency deviation Dw.

Difference is observed only in inversion zones. 4), fixed range to the target, and, for distinctness, for js = 0. 9) The instantaneous DFS value at these phase values becomes zero. Therefore, these points of the graph are called DFS zeros [2]. They are concerned to distinctive DFS points. The time moment, where the instantaneous DFS value achieves the extreme values, is another type of typical points. Distinctive points of one type are time-shifted by the DFS half-period. The DFS from the mixer output passes to the frequency meter.

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