**
Algorithm for estimation the frequency properties of the individual reflector at low resolution in the time domain**

**
A. A. Savin**

**
Tomsk State University of Control Systems and Radioelectronics**

Received
December 20, 2012

**Abstract:** The problem of the filter synthesis is
solved at this paper. The filter implements a quasi-optimal estimation of the
frequency characteristics of two or more closely spaced reflectors, which are
localized in the time domain. The algorithm is realized on the assumption the
channel model is Gaussian with independent reflectors and the channel frequency
response is processed. Measurement processing method is based on the
application of the quasi-optimal filter that uses the UT (unscented
transformation) conversion. The algorithm convergence and processing algorithm
performance are shown. The statistical characteristics of the estimation
accuracy of the frequency characteristics for the individual reflectors are
obtained by mathematical simulation. The results of processing of the
experimental data obtained using the complex vector analyzer are given. The
verification standard of Beatty is chosen as the investigation object.
Measurements of the complex reflection coefficient are implemented in the
frequency range from 10 MHz to 18 GHz.

**Keywords:** impulse response, frequency characteristics, filtering algorithm,
Beatty standard.