Sequences sets with low aperiodic autoand crosscorrelations play an important role in many applications like communications, radar and other active sensing applications. The use of antipodal sequences reduces hardware requirements while increases the difficult of the task of signal design. In this paper we present a method for the computation of the Integrated Sidelobe Level (ISL), and we use i...

In order to evaluate pulse compression for use in phased array weather radar systems, modifications to the TimeSeries Weather Radar Simulator have been made which incorporate phase-coding into its functionality. This allows for evaluating the performance of various pulse compression schemes under controlled conditions. In this study, a 5-bit Barker code has been integrated into the TSWRS along ...

Transmit waveform design is one of the most important problems in active sensing and communication systems. This problem, due to the complexity and non-convexity, has been always the main topic of many papers for the decades. However, still an optimal solution which guarantees a global minimum for this multi-variable optimization problem is not found. In this paper, we propose an attracting met...

This paper deals with the design of radar receive filters which optimize either the Lp-norm of the vector containing the filter sidelobe energies or the Inverse Signal to Noise Ratio (ISNR) under an upperbound constraint on the previously mentioned Lp-norm. In both the cases, we prove that the filter design can be formulated as a convex optimization Second Order Cone Programming (SOCP) problem ...

In order to evaluate pulse compression for use in phased array weather radar systems, modifications to the Time-Series Weather Radar Simulator have been made which incorporate phase-coding into its functionality. This allows for evaluating the performance of various pulse compression schemes under controlled conditions. Barker-coded pulses with matched and mismatched filters were examined in re...

In this paper, we consider the problem of coherent multiple-input multiple-output radar receive filter design. If the transmitted radar waveforms do not have the desired ideal autoand cross-correlation properties, the signal at the output of a matched filter (MF) can suffer severe interference due to targets in neighboring range-Doppler bins. Existing receive filter design approaches, e.g., ins...

The Multiple-Input Multiple-Output (MIMO) radar combines the signals from multiple transmit and receive elements separately to form a virtual array. Consequently, system imperfections in MIMO caused by channel imbalance mutual coupling are repeatedly present array, affecting beamforming performance. In this paper, beam pattern deviations these described mathematically relation single point targ...

Circular ground-based SAR (GBSAR) is a new 3D imaging GBSAR with the potential of acquiring high-quality images and deformation. However, its donut-shaped spectrum short radius antenna rotation cause high sidelobes on curved surfaces, resulting in poor quality. The multi-phase-center circular full array can effectively suppress by filling to be equivalent solid spectrum, but it requires larger ...

A novel approach to the design of efficient digital quadrature demodulators for wide bandwidth SAR systems is described. Efficiency is obtained by setting the intermediate frequency to 1/4 the ADC sampling frequency. One channel is made filterfree by synchronizing the local oscillator with the output decimator. The filter required by the other channel is optimized through global search using th...

In multi-input multi-output (MIMO) radar transmit beampattern synthesis, most current literature formulates the problems in steradian space. However, since the beampattern and its parameters are both measured and defined in radian space, from the view point of physical meaning, it will be better to reformulate the problems in radian space rather than in steradian space. In this paper, we propos...