Estimation of the delay time of quantized radar pulses

Abstract

Background. The object of the study is digital algorithms and a device for estimating the delay time of quantized radar pulses used in measuring the target range. The purpose of the study is to synthesize and analyse of digital algorithms and estimation devices with increased accuracy of the time of holding quantized pulses. Materials and methods. The optimal algorithm for estimating the delay time of a sequence of binary-quantized signal pulses, which does not impose restrictions on the choice of the time sampling period with respect to the duration of signal pulses, is synthesized using the Markov finite circuit algorithm by the maximum likelihood method. Results. The proposed practical algorithms and a device for estimating the delay time in combination with traditional weightless algorithms for detecting a bundle of binary-quantized signals take into account the temporary overlap of quantized pulses in accordance with the selected engagement zones and do not allow false counts by noise. Conclusions. The computer simulation has shown that the proposed algorithms for joint detection and evaluation can significantly improve the accuracy of estimating the delay time compared to the known algorithms.

Keywords

• estimation algorithms
• time sampling
• delay time
• range
• binary-quantized signals
• maximum likelihood method
• modeling
• joint detection-estimation
• markov chains