James LaPorta is a national security coordinating producer in CBS News' Washington bureau. He is a former U.S. Marine infantryman and veteran of the Afghanistan war. The report found the former Fox ...

The defense secretary has insisted no classified information was shared. A monthslong investigation into Defense Secretary Pete Hegseth's use of the commercial messaging app Signal is complete and its ...

A classified final version of the Pentagon inspector general’s report into Secretary of Defense Pete Hegseth’s use of Signal to discuss sensitive military operations has been delivered to the House ...

Introduction: Underwater acoustic (UWA) communication systems confront significant challenges due to the unique, dynamic, and unpredictable nature of acoustic channels, which are impacted by low ...

Abstract: Frequency-modulated continuous wave (FMCW) radar signals reflected from the human activities are analyzed to enable accurate recognition and classification, forming the basis for activity ...

Our research proves a conjecture from string theory asserting the vanishing of a specific convolution sum arising in the 4-graviton scattering amplitude in 10-dimensional type IIB string theory. The ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

Abstract: This work presents a width measurement system that jointly evaluates the signals gathered with two alternately transmitting radar modules that are placed laterally to the object of interest, ...

Convolution is a remarkable property of the Fourier transform, often cited in the literature as the “faltung theorem”. Convolution is a remarkable property of the Fourier transform, often cited in the ...

Signals composed of a sum of sinusoids are often used when testing components and systems. The peak-to-RMS value of the sum stresses the dynamic range of the component or system, thus correcting a ...

The crest factor, or peak-to-RMS ratio, is a signal metric to quantify the dynamic range of a signal. It provides a link between its RMS value and its peak value. Because the RMS value is often known ...