MATLAB Calculation of GDOP Values for Target Localization in Radar Networks

In this article, we will use MATLAB to calculate the Geometric Dilution of Precision (GDOP) values for target localization in radar networks. GDOP serves as a key metric for evaluating positioning accuracy, enabling assessment of radar network performance across different spatial configurations and orientations. The implementation involves constructing the Jacobian matrix derived from radar-target geometry relationships and computing the error covariance matrix through matrix inversion operations. By analyzing GDOP values, we can determine whether the radar network design meets specific target localization accuracy requirements. This analytical approach facilitates optimization of radar network configurations and parameter settings to enhance positioning precision while minimizing errors. The MATLAB implementation typically utilizes built-in functions like inv() for matrix inversion and sqrt() for trace calculations to derive GDOP from the covariance matrix. Therefore, computing GDOP values with MATLAB provides critical insights and guidance for making informed target localization decisions, supported by quantitative accuracy assessments.