Filter banks with fixed time-frequency resolution, such as the Short-Time Fourier Transform (STFT), are a common tool for many audio analysis and processing applications allowing effective implementation via the Fast Fourier Transform (FFT). The fixed time-frequency resolution of the STFT can lead to the undesirable smearing of events in both time and frequency. In this paper, we suggest adapti...

The need for low-cost, real-time, image processing for automated inspection and other industrial applications has led to considerable effort being directed at many novel computer architectures. Two main avenues of work have become apparent: the use of powerful parallel architectures and the use of pipelined processors. The former while offering great flexibility, have, to date, been associated ...

It is known that the output performance of a conventional adaptive antenna system is greatly influenced by its antenna array configuration. Such a conclusion holds true to space-time adaptive processing (STAP) systems of mobile communications, where receiving signals consist of the superimposed multipath rays with delay spread and angle spread. It is considered that the associated system perfor...

D ysfunction in the central nervous system of the neonate is often rst identi ed through seizures. The di culty in detecting clinical seizures, which involves the observation of physical manifestations characteristic to newborn seizure, has placed greater emphasis on the detection of newborn electroencephalographic (EEG) seizure. The high incidence of newborn seizure has resulted in considerabl...

■ This article examines the suitability of the Mesh synchronous processor (MeshSP) architecture for a class of radar signal processing algorithms known as space-time adaptive processing (STAP), which is an important but computationally demanding technique for mitigating clutter and jamming as seen by an airborne radar. The high computational requirements of STAP algorithms, combined with the ne...

Intersymbol interference (ISI) and cochannel interference (CCI) are two primary sources of signal impairment in mobile communications. In order to suppress both ISI and CCI, space-time adaptive processing (STAP) has been shown to be effective in performing spatio-temporal equalization, leading to increased communication capacity as well as improved quality of service. The high complexity and sl...

A Side Lobe Canceller (SLC) structure is a conventional partially adaptive technique which is used in large adaptive array radars. If a desired signal has long time duration in comparison with the SLC adaptation time, signal components may be cancelled. So, this paper presents a modified SLC which eliminates desired signal cancellation problems and allows using an unconstrained adaptive algorit...

The paper presents an orthogonally-anchored adaptive linear interference rejection technique in space-time rake processing. With the use of a super short training sequence, the initial space-time adaptive filtering vector composed of two mutually orthogonal components is calculated by using a projection-based filter optimization technique. The adaptive filter optimization based on the preoptimi...

Mainbeam jamming poses a particularly difficult challenge for conventional monopulse radars. In such cases spatially adaptive processing provides some interference suppression when the target and jammer are not exactly coaligned. However, as the target angle approaches that of the jammer, mitigation performance is increasingly hampered and distortions are introduced into the resulting beam patt...