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Signal processing subsystem is the core of a radar system, the performance and the design cycle of which could directly influence the implementation of the whole system. Therefore, how to realize a high-performance flexible universal real-time SAR signal processing system is one of the main challenges nowadays. The paper proposes the design architecture and implementation of a high-performance real-time...
For low-angle targets, the performance of altitude measurement is affected by multipath phenomenon. Generally, the response at the receiver is contributed by the echoes of target and its image. Such sparsity of signals in the elevation direction provides a foundation for parameter estimation based on compressive sensing with parameterized dictionary. As the dictionary atoms are multi-parameter, it...
Graph coloring problem (GCP) has proven to be an NP hard problem, until now there is no way to solve it in polynomial time. In this paper, a novel parallel genetic algorithm is presented to solve the GCP based on Compute Unified Device Architecture (CUDA). The initialization, crossover, mutation and selection operators are designed parallel in threads. Moreover, the performance of our algorithm is...
Range migration is the basic and troublesome problem in moving target detection for wideband radar. In this paper, we propose a joint-sparse estimation algorithm that gives a sparse representation of migration targets with velocity ambiguity. The proposed algorithm utilizes a non-ambiguous representation of the wideband signals to alleviate the velocity ambiguity, then the estimation of the targets...
An instantaneous rotation rate (IRR) estimation algorithm based on the chirp rate of the scattering centre in the same Doppler cell is proposed to complete the cross-range scaling of the RID ISAR images.
Radar automatic target recognition (RATR) is an important function for modern radar. Target high resolution range profile (HRRP) contains target structure signatures, such as target size, scatterer distribution, etc., thereby radar HRRP target recognition has received intensive attention from the RATR community. Statistical modeling of target HRRPs is the key stage for HRRP statistical recognition,...
A computationally efficient direction-of-arrival (DOA) estimation algorithm is proposed for the multiple-input multiple-output (MIMO) radar with uniform linear array (ULA). In the proposed algorithm, the ULA structure is exploited to greatly reduce the array vector dimension, which results in a significant decrease in computational complexity. The effectiveness of the algorithm is verified by simulations.
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