More Accurate Hybrid Po-Mom Analysis for an Electrically Large Antenna-Radome Structure

Hu, Bing; Xu, Xiaohui; He, Ming; Zheng, Ying

doi:10.2528/pier09022301

Cited by 21 publications

(13 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Method of moments is a strict low-frequency algorithm, which has been widely used in the field of electromagnetics [15][16][17][18][19]. The employment of MoM as a part of optimization algorithm can obrain more precise solution for its ability to take the mutual coupling into account.…”

Section: Methods Of Moments and Fitness Functionmentioning

confidence: 99%

Low RCS Dipole Array Synthesis Based on Mom-Pso Hybrid Algorithm

Wang¹,

Gong²,

Zhang³

et al. 2009

PIER

View full text Add to dashboard Cite

Abstract-In this paper, a hybrid algorithm combined method of moments (MoM) with particle swarm optimization (PSO) is used to realize low radar cross section (RCS) array synthesis. Both the scattering factor and the radiation factor are involved in the proposed objective function to achieve the promising dipole array with a reduced RCS and satisfied radiation performance. To improve the optimization efficiency, radiation constraint conditions are adopted to avoid unnecessary scattering calculation. The symmetric matrix and block treatment are also used to fill the MoM impedance matrix. The optimization results show that the proposed algorithm is able to achieve RCS reduction of 5.5 dB for dipole array.

show abstract

Section: Methods Of Moments and Fitness Functionmentioning

confidence: 99%

Low RCS Dipole Array Synthesis Based on Mom-Pso Hybrid Algorithm

Wang¹,

Gong²,

Zhang³

et al. 2009

PIER

View full text Add to dashboard Cite

show abstract

“…PO is an efficient high frequency method to calculate the scattering of the electrically large target surface. PTD is adopted to calculate the diffraction of the boundaries [10,11]. The body coordinate system OXY Z is fixed in the aircraft as shown in Figure 2.…”

Section: Monostatic Rcs Databasementioning

confidence: 99%

A Novel Simulation Approach of Aircraft Dynamic RCS

Zhuang¹,

Zhang²,

Zhang³

2014

PIER M

View full text Add to dashboard Cite

Abstract-The Radar Cross Section (RCS) of moving targets varies dramatically with aspect or time. The accuracy of simulated dynamic RCS is very important for radar system simulation. A novel approach to simulate the dynamic RCS of aircraft is proposed in this paper. Firstly, the electromagnetic (EM) model of aircraft is built and the all-space monostatic RCS database calculated. Secondly, the aspect angles (azimuth and elevation) in target coordinate system are calculated from flight path by coordinate transformation. Then dynamic RCS is obtained based on database and aspect angles by linear interpolation method. Account for the influence results from aircraft vibration in target motion, we use a white Gaussian distributed random series to modify the simulated results. The statistical characteristics of three kinds of dynamic RCS values are investigated, and the desirable agreement of results between modification and measurement shows the applicability of this simulation approach.

show abstract

“…There are many methods for solving this kind of problems, such as the high frequency asymptotic methods, full-wave numerical methods and the hybrid full-wave and high frequency methods [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. Full-wave numerical methods have been well developed to analyze the slotted-waveguide antenna [5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

“…However, due to large computation resources required, they usually are applied to analyze radiation by electrically small radome/antenna problems. For the scattering or radiation analysis of electrically large three-dimensional problems in electromagnetic engineering, the high frequency method is usually employed to achieve efficient calculation, such as Ray Tracing (RT), Physical Optics (PO), hybrid full-wave and high frequency methods [10][11][12][13][14]. But when these methods are applied to compute the radiation by a large antenna array with radome on a large aircraft, they usually become inefficient due to multi-scale, multi-regional connectivity and multi-materials problems.…”

Section: Introductionmentioning

confidence: 99%

Accurate and Efficient Analysis of Large Antenna Arrays With Radome on a Large Aircraft

Sun¹,

Yang²,

Sheng³

2015

PIER

View full text Add to dashboard Cite

Abstract-An accurate and efficient computational approach is presented for analyzing radiation characteristics of large antenna arrays with radome. This approach is based on the hybrid finite elementboundary integral-multilevel fast multipole algorithm (FE-BI-MLFMA). Unlike the conventional singledomain FE-BI-MLFMA, the whole domain of the antenna array with radome is separated into many disconnected domains. A large free space area unavoidable in the single-domain FE-BI-MLFMA is eliminated in this multi-domain FE-BI-MLFMA formulation, thus the number of unknowns is greatly reduced in the presented multi-domain FE-BI-MLFMA approach. Different from the single-domain FE-BI-MLFMA, many integral equations are required in this multi-domain FE-BI-MLFMA. The numerical experiment shows that the presented multi-domain FE-BI-MLFMA is more efficient than the singledomain one while maintaining the same accuracy. A whole complicated system of a slotted-waveguide array with radome mounted on an aircraft is analyzed to further demonstrate the generality and capability of the presented multi-domain FE-BI-MLFMA.

show abstract

More Accurate Hybrid Po-Mom Analysis for an Electrically Large Antenna-Radome Structure

Cited by 21 publications

References 14 publications

Low RCS Dipole Array Synthesis Based on Mom-Pso Hybrid Algorithm

Low RCS Dipole Array Synthesis Based on Mom-Pso Hybrid Algorithm

A Novel Simulation Approach of Aircraft Dynamic RCS

Accurate and Efficient Analysis of Large Antenna Arrays With Radome on a Large Aircraft

Contact Info

Product

Resources

About