The simulation of ground clutter is the key and knot problem in radar simulation system. The simulation of ground clutter based on DEM is studied. It is introduced how to use fractal arithmetic to produce random digital elevation. After obtaining the orographic’s height, draw the 3D terrain with the OpenGL technology, in order to realize the demonstration of 3D terrain. Based on DEM, terrain is...

Being equipped with a millimeter-wave radar allows a low-flying helicopter to sense the surroundings in real time, which significantly increases its safety. However, nonhomogeneous clutter environments, such as a multiple target situation and a clutter edge environment, can dramatically affect the radar signal detection performance. In order to improve the radar signal detection performance in ...

Original methods for radar detection performance analysis are derived for a #uctuating or non-#uctuating target embedded in additive and a priori unknown noise. This kind of noise can be, for example, the sea or ground clutter encountered in surface-based radar for the detection of low grazing angle targets and/or in high-resolution radar. In these cases, the spiky clutter tends to have a stati...

An analysis is presented of the results from recent trials to gather 2.4 GHz bistatic sea clutter, and in particular, of fitting the compound K distribution model both to bistatic clutter data and to simultaneously-acquired monostatic clutter data. It is found that the K distribution provides a good fit to the bistatic data, but that the bistatic clutter is significantly less ‘spiky’ than that ...

We present and compare adaptive detection algorithms developed for synthetic aperture radar (SAR) targets in structured clutter, utilizing both generalized likelihood ratio (GLR) tests and maximal invariant (MI) tests. We consider the problem of detecting a target straddling a known boundary between two independent clutter regions inducing a clutter covariance matrix with block diagonal structu...

The use of dumpers is one of the main causes of accidents in construction sites, many of them with fatal consequences. These kinds of work machines have many blind angles that complicate the driving task due to their large size and volume. To guarantee safety conditions is necessary to use automatic aid systems that can detect and locate the different objects and people in a work area. One prom...

Wind turbines built to generate electricity cause clutter contamination that is often difficult to distinguish from weather signals. As the country relies on wind power for a larger portion of its energy production, more wind farms are being built to meet this demand. More wind turbines within the range of weather radar increase unwanted clutter returns, which may affect users and other algorit...

When information sequences are embedded into radar waveforms by means of coding diversity, the resulting radar emissions then change on a pulse-to-pulse basis during a coherent processing interval (CPI). As such, pulse compression of these different waveforms leads to different sidelobe structures, giving rise to range sidelobe modulation (RSM) of the clutter. The presence of RSM induces a part...

because of having good performance in cancelling the clutter echoes, pulsed-doppler radar is the best solution in some applications. in this paper a new algorithm for signal design and signal processing in high prf radar is developed. the robust chinese remainder theorem is the basis for estimating the unambiguous ranges in the proposed algorithm. two high prf pulsed-doppler radars are designed...

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...