Error Estimation in Target Height Finding Using VHF Radars and a Three-Antenna System Positioned one Above the Other in a Radar Network

Abstract: A combined algorithm for automatic target detection and height estimation, based on amplitude comparison using multipath lobes of three sensors positioned one above the other, and a three-positioned in a plane method, is proposed in this paper. A method for three-positioned radar system base estimation, allowing target height measurement with height probability of detection, is developed and applied. The measurement accuracies, achieved with two approaches for target height estimation with identical statistical and power detection parameters, are compared. The suggested approach can be successfully applied in different sensor system solutions

Time of arrival estimation in pulsar-based navigation systems

This paper focuses on the Time of Arrival (TOA) estimation problem related to new application of pulsar signals for airplane-based navigation. The aim of the paper is to propose and evaluate a possible algorithm for TOA estimation that consists of epoch folding, filtering, CFAR detection, crosscorrelation and TOA calculation. The TOA estimation algorithm proposed is verified using real experimental data obtained from the Westerbork radio observatory in The Netherlands. The performance of the proposed TOA algorithm is evaluated in terms of SNR at the cross-correlator input and the TOA accuracy