Pattern Synthesis of Planar Antenna Array via Convex Optimization for Airborne Forward Looking Radar

Qu, Yi; Liao, Guisheng; Zhu, Shengqi; Li, Xiangyang

doi:10.2528/pier08060301

Cited by 43 publications

(35 citation statements)

References 24 publications

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“…To retrieve the clutter spectrum as wide as possible but not merely 3 dB bandwidth, it is assumed that the Doppler frequencies f d of the ground cells illuminated by the antenna mainlobe are confined within about [−300, 300] Hz. For a SAR system, the relationship between the Doppler frequency f d of each ground stationary cell and its corresponding cone angle φ can be written as [18,19].…”

Section: Signal Modelingmentioning

confidence: 99%

System Error Analysis and Calibration Methods for Multi-Channel Sar

Ma¹,

Li²,

Liao³

2011

PIER

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Abstract-For multi-channel SAR system, since the minimum antenna area constraint is eliminated, wide swath and high resolution SAR image can be achieved. However, compared to mono-channel SAR system, there exist many deleterious factors in multi-channel SAR system which significantly degrade the quality of SAR image. In this paper, all the deleterious factors in the system are analyzed and classified according to their impact on the SAR imaging processing, in addition an new array error estimation method is presented. The validity of the proposed method is verified by experimental results of measured Tri-channel SAR data.

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Section: Signal Modelingmentioning

confidence: 99%

System Error Analysis and Calibration Methods for Multi-Channel Sar

Ma¹,

Li²,

Liao³

2011

PIER

Self Cite

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“…But the global optimization methods are usually time consuming. So, many other methods have been used in the pattern synthesis of array antenna [14][15][16][17][18][19]. Keizer [17] presents a method to synthesize planar arrays with elements in a periodic grid by successively applying the fast Fourier transform (FFT).…”

Section: Introductionmentioning

confidence: 99%

Pattern Synthesis of Concentric Circular Antenna Array by Nonlinear Least-Square Method

Guo¹,

Guo²,

Qu³

et al. 2013

PIER B

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Abstract-An improved nonlinear least-square method is presented in this paper. This method changes the traditional least-square method's shortness of being sensitive to its initial conditions. Pattern synthesis for concentric circular arrays using nonlinear least-square method is introduced. The excitation amplitudes and phases of the array elements are optimized. This method can make the design of the feeding network much easier because the excitation amplitudes of the elements placed on the same ring are equal. The number of parameters to be optimized is reduced which leads to a faster simulation speed and makes the simulation results much more accurate. Also, the cost of designing the feeding network is reduced. The simulation results show the good agreement between the synthesized and desired radiation pattern. Also, the peak side lobe level (PSLL) of the synthesized radiation pattern is quite low.

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“…[1][2][3][4][5][6][7][8][9][10][11][12]. The directionsof-arrival (DOA) estimation [13][14][15][16][17][18] of signals impinging on an array of sensors is a fundamental problem in array processing, and many methods have been proposed for its solution.…”

Section: Introductionmentioning

confidence: 99%

Blind Direction of Arrival Estimation of Coherent Sources Using Multi-Invariance Property

Zhang¹,

Yu²,

Feng³

et al. 2008

PIER

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Abstract-Blind direction of arrival (DOA) estimation algorithms of coherent sources using multi-invariance property is presented in this paper. ESPRIT-like algorithm in [23] can estimate DOA of coherent signal, but its performance is without satisfaction. We reconstruct the received signal to form data model with multi-invariance property, and then multi-invariance ESPRIT and multi-invariance MUSIC algorithms for coherent DOA estimation are proposed in this paper. Our proposed algorithms can resolve the DOAs of coherent signals. They have much better DOA estimation performance than ESPRITlike algorithm. Meanwhile they identify more DOAs than ESPRIT-like algorithm. The simulation results demonstrate their validity.

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Pattern Synthesis of Planar Antenna Array via Convex Optimization for Airborne Forward Looking Radar

Cited by 43 publications

References 24 publications

System Error Analysis and Calibration Methods for Multi-Channel Sar

System Error Analysis and Calibration Methods for Multi-Channel Sar

Pattern Synthesis of Concentric Circular Antenna Array by Nonlinear Least-Square Method

Blind Direction of Arrival Estimation of Coherent Sources Using Multi-Invariance Property

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