The aspect sensitivity of high-resolution range profile (HRRP) leads to the anomalous change of the HRRP statistical characteristic, which is one of inextricable problems on the target recognition based on HRRP. Aiming at the HRRP statistical characteristic, an adaptive angular-sector segmentation method is proposed through based on the grey relational mode. Comparing to the equal interval angu...

Atmospheric radar imaging techniques have shown promise in revealing the fine-scale structure of the atmosphere within the resolution volume of the radar. Enhanced resolution can be obtained in both angle and range by using spaced receivers and shifted frequencies, respectively. The distinct techniques have been termed coherent radar imaging (CRI) for angular resolution enhancement and range im...

Shape estimation of space debris, or the fragments of satellites and rocket bodies left on the earth’s orbit is an important task in evaluating its danger of a possible collision with operational spacecraft. A method of imaging a space debris whose size is smaller than the range resolution of the radar is proposed. It is called Single Range Doppler Interferometry (SRDI) in contrast to the conve...

We discuss range and Doppler processing for FMCW radar using only a single pulse or frequency sweep. The first step is correlation processing, for which the range and Doppler resolution are limited by the ambiguity function. We show that this resolution can be optimized with an additional inverse filtering step. The method is demonstrated for sinusoidal FMCW radar measurements. Several regulari...

In the traditional transmitting beamforming radar system, the transmitting antennas send coherent waveforms which form a highly focused beam. In the multiple-input multipleoutput (MIMO) radar system, the transmitter sends noncoherent (possibly orthogonal) broad (possibly omnidirectional) waveforms. These waveforms can be extracted at the receiver by a matched filterbank. The extracted signals c...

Scanning radar is of notable importance for ground surveillance, terrain mapping and disaster rescue. However, the angular resolution of a scanning radar image is poor compared to the achievable range resolution. This paper presents a deconvolution algorithm for angular super-resolution in scanning radar based on Bayesian theory, which states that the angular super-resolution can be realized by...

This paper presents the application of the multifrequency range imaging technique (RIM) on the Chung-Li VHF radar during several experiments between 2008 and 2013. By using this technique it is possible to get a better range resolution than the original radar pulse range gate. Hence very thin structures are observable continuously in range and time. This technique is well known in the radar atm...

Recently, the concept of MIMO (multiple-inputmultiple-output) radars has drawn considerable attention. In traditional SIMO (single-input-multiple-output) radar, the transmitters emit coherent waveforms to form a focused beam. In MIMO radar, the transmitters emit orthogonal (or incoherent) waveforms to increase the spatial resolution. These waveforms also affect the range and Doppler resolution ...

A high resolution Software Defined Radar system is implemented in this work by adopting the new generation Universal Software Radio Peripheral USRP NI2920, a software defined transceiver. The enhanced available bandwidth due to the Gigabit Ethernet interface is exploited to achieve the high range resolution features. At this purpose, a specific Labview application implementing the radar operati...

A growing trend in Satellite communication (Satcom) and Radar systems in the aerospace and defense market is the need for increased signal and analysis bandwidth and processing gain. Satcom systems are being driven by demands for increased data rates, while modern Radar systems require more processing gain to improve range resolution, which in turn drives wider modulation bandwidths. Modern Rad...