Pulse Compression Linear Frequency Modulation (PCLFM) waveform is widely used in wideband radars such as Synthetic Aperture Radar (SAR) and Inverse Synthetic Aperture Radar (ISAR). But the LFM waveform suffers from range migration, if the target to be detected and it has a high velocity that the pulses cannot be coherently integrated. A novel method based on wideband matched filter is proposed to ...Show More
The distributed coherent aperture radar (DCAR) consisting of several cooperating small aperture radars and a control center is proposed to replace the traditional large aperture radar, which is more easily to transport and less expensive to build. In this paper, the constitution and workflow of DCAR are described at first. In the following, the estimation methods of coherent parameters are introdu...Show More
The distributed coherent aperture radar consists of several cooperating small aperture radars and a control center, which is proposed as a new technology to replace traditional large aperture radars for the next generation radar. The coherent performance of distributed coherent aperture radar is mainly affected by time synchronization. However, current time synchronization technology could not mee...Show More
In distributed coherent aperture radar which is a new technology to replace traditional large aperture radars for next generation radar, all transmitted signals of unit radars should arrive at target at the same time and with the same phase so that the energy of all unit radars could be combined coherently. Therefore, the estimation of phase difference between signals at target is a key issue. In ...Show More
When ground-based radar is applied to the detection of long-range targets, the interference around the target is located primarily in the radar mainlobe, such that the radar detection capabilities are significantly degraded. Conventional methods of interference suppression mainly focus on sidelobe interference suppression. In the presence of mainlobe interference, sidelobe interference suppression...Show More
In this paper, a new technology of mainlobe interference suppression for radar system is proposed based on large aperture auxiliary array. The geometry of auxiliary array is firstly designed, and then two adaptive beamforming methods are presented respectively. In method one, the interference received by the auxiliary array is utilized to cancel the mainlobe interference of main radar based on the...Show More