Application of cumulants to array signal processing - Part V: Sensitivity issues

Virtual-ESPRIT (VESPA) imposes a slight constraint on the array, i.e., only a pair of identical sensors are required, We follow the classical procedur e to define the sensitivity of VESPA with respect to each model parameter a nd derive closed forms for the sensitivity formulas, We justify our derivat ions by comparing the theoretical formulas with the results from Monte Carl o simulations, Additionally, we demonstrate, by simulations, that VESPA is more robust to model mismatches than ESPRTT in most situations.