This paper considers the problem of multiple disjoint sources localization using time difference of arrivals (TDOA) and frequency difference of arrival (FDOA) with sensor position and velocity errors. By exploiting the observation that the multiple disjoint sources exhibit the same sensor location errors, the influence of sensor location errors can be greatly alleviated. The CTLS technique, as ...

Cognitive radio is new technology that uses spectrum more effectively. Spectrum sensing is one of the most challenging problems in cognitive radio systems. There are some sensing methods for indentifying the unused spectrum for opportunistic transmission. This paper develops one method based on multiple signal classification (MUSIC) algorithm for spectral estimation in cognitive radio system. U...

The interception of low probability of intercept signals has become increasingly difficult due to the availability of waveform agile transmitters and increased spectral bandwidth. Current detection techniques based on energy detection ignore the important cross-sensor correlation information. Additionally, existing TDOA/FDOA based localization techniques pair up the sensors and perform only pai...

With the increasing economic and strategic significance of global navigation satellite systems (GNSS), interference events also occur frequently. Interference monitoring technologies aim to monitor that may affect regular operation GNSS. can be divided into three parts: detection recognition, source direction finding, location tracking. aims determine whether exists. This paper introduces class...

Estimating the location parameters of moving target is an important part intelligent surveillance for Internet Vehicles (IoV). Satellite has potential to play a key role in many applications space–air–ground-integrated networks (SAGINs). In this article, novel passive parameter estimator using multiple satellites aerial proposed. estimator, direct wave signals reference channels are first filte...