In this paper, we derive the Cramer-Rao bound (CRB) for joint target position and velocity estimation using an active or passive distributed radar network under more general, and practically occurring, conditions than assumed in previous work. In particular, the presented results allow nonorthogonal signals, spatially dependent Gaussian reflection coefficients, and spatially dependent Gaussian ...

Bistatic passive synthetic aperture radar (SAR) systems using ground broadcast and wireless network signals suffer from low spatial resolution due to the narrow bandwidths and low carrier frequencies. By exploiting multiple distributed illuminators, multi-static passive radar has the possibility of producing high-resolution SAR images. In this paper, a two-stage image formation approach, which ...

The traditional approach to discussing this problem is usually split into two separate discussions, one dealing with technical Electronic Warfare measures against sensor equipment and another dealing with deceptions aimed at operators and imagery analysts or interpreters. This way of looking at the problem is increasingly problematic, with increasing levels of automation in ISR systems, especia...

The point-to-area problem strongly complicates the validation of satellite-based precipitation estimates, using surface-based point measurements. We simulate the limited spatial representation of light-to-moderate oceanic precipitation rates along ship tracks with respect to areal passive microwave satellite estimates using data from a subtropical island-based radar. The radar data serves to es...

Abstract Passive radar (PR) systems need to detect the presence of a target response, which is many orders magnitude weaker than clutter (direct signal and multipath). Indeed, cancellation key stage within PR processing scheme. One most effective techniques in this field using CLEAN approach. In paper, batch-based technique based on GMP FFT has been proposed, can speed up computational have bet...

We propose a simple solution to the uncertain delay problem in USRP (Universal Software Radio Peripheral)based SDR (Software-Defined Radio)-radar systems. Instead of time-synchronization as employed in (pseudo-) passive radar configurations, which require two or more synchronized receivers, we use direct reception (antennato-antenna) signal in a single receiver system as a reference to the exac...