In order to improve the azimuth resolution beyond what monostatic synthetic aperture radar (SAR) can achieve in the forward-looking area, an asymmetric configuration bistatic SAR system and its imaging algorithm are proposed in this paper. The transmitter is mounted on a fixed platform in side-looking mode while the receiver moves along a nonlinear trajectory in forward-looking mode. Due to the...

Space-Surface Bistatic Synthetic Aperture Radar (SS-BSAR) is a sub-class of BSAR, where the transmitter can be any satellite and the receiver could be mounted on an aircraft, a land vehicle or stationary on the ground. If stationary receiver is applied, the synthetic aperture is fully attributed to the moving of satellite. Such a kind of geometry is suited for ground deformation monitoring. Our...

Radar shadows are observed when an object that lies within the main beam of a radar transmitter screens a region of the detection space. Objects lying within the screened region, or shadow , reflect no energy back to the radar receiver. When a target screens a region of clutter, such as shown in Fig. 1, the probability of detecting the target may be increased by resolving the lower power return...

We present a hybrid numerical method that combines full-wave analysis with ray-tracing to efficiently model propagation in reconfigurable intelligent surface (RIS)-enabled communication channels. Full-wave simulation is used obtain the radiation pattern of transmitter and complex radar cross section (RCS) RIS. Then, RIS imported into ray-tracer as secondary transmitter. That enables modeling in...

The problem of building modern systems for collecting, processing and presenting information moving platforms, characterized by the presence a neural network with deep learning, sensors preprocessing, information, is considered. In physics processes does not change, accordingly, algorithm extracting signals from under noise doesn't change either but supplemented that learns in process to perfor...

This paper explores the concept of a Forward Scattering Radar (FSR) system with a rotational transmitter for target detection and localization. Most of the research and development in FSR used a fixed dedicated transmitter; therefore, the detection of stationary and slow moving target is very difficult. By rotating the transmitter, the received signals at the receiver contain extra information ...

Inspired by recent advances in multiple-input multiple-output (MIMO) communications, this proposal introduces the statistical MIMO radar concept. To our knowledge, this is the first time that the statistical MIMO is being proposed for radar. The fundamental difference between statistical MIMO and other radar array systems is that the latter seek to maximize the coherent processing gain, while s...

An entirely new set of criteria for the design of kernels for time-frequency representations (TFRs) has been recently proposed [1], [2], [3]. The goal of these criteria is to produce kernels (and thus, TFRs) which will enable accurate classification without explicitly defining, a priori, the underlying structure that differentiates individual classes. These kernels, which are optimized to discr...

This paper reports on the optical generation of a rapidly tunable millimeter-wave subcarrier for lidar–radar. The millimeter-wave signal is generated by beating the output from two Nd : YVO4/MgO : LiNbO3 electrooptical monomode microchip laser sections realized monolithically in a single composite crystal. The device has a continuous tuning range up to 45 GHz. The measured chirp rate is 3816 TH...

Exploratory work on the behavior of dc and pulse excited COlaser amplifiers has resulted in the design and construction of a prototype laser radar transmitter. It is capable of an output of 1 kW average power in a train of 10 |j.sec pulses at a pulse repetition rate of 10 kc. This report summarizes the experimental results leading to the final design, outlines the design features and discusses ...