基于电磁仿真的复合制导转台对雷达测角影响的建模评估方法

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中图分类号：O441 文献标志码：A DOI：10.12305/j.issn.1001-506X.2025.03.07

Modeling and evaluation method for influence of composite guidance turntable on radar angle measurement based on electromagnetic simulation

GAO Hongwei1，ZHANG Guichang1，HAO Kaizi²，XIN Ximin1，LI Dongwei³，* （1.Schoolof Cyberspace Science and Technology，Beijing Institute of Technology，Beijing 10o81，China; 2.Beijing Simulation Center，Beijing 100854，China；3. Schoolof Informationt and Electronics， BeijingInstituteof Technology，Beijing1ooo81，China）

Abstract：In the construction of hardware-in-the-loop（HWIL） simulation test system for radio frequency （RF）/infrared（IR） composite guidance，thedesign of turntables for RF/IR composite guidance is one of the key and difficult points.Thisarticle focuses onan RF/IR composite guidance turntable consistingof a five axis turntable and infrared compositeequipment added to its two outer axes，and hopes to evaluate its impact on the accuracy of angle measurement errorof the tested radar by electromagnetic simulation，to meet the demand for thedesign of RF/IR composite guidance turntable.For that，a hybrid full-wave electromagnetic （EM） modeling method is proposed based on the domain decomposition．The proposed modeling method achieves high confidence numerical simulation of the HWIL simulation scenario where the waves radiated from an antenna reach the tested radar through a heterogeneous composite guidance turntable.Then，with EM field distribution obtained based on modeling and simulation，a calculation method for radar angle measurement error is proposed viaintegrating the principles of electromagnetic reciprocityand monopulse amplitude-comparison angle measurement.Numerical simulation experiments including several typical heterogeneous composite guidance turntables is conducted to verify the accuracy and capability of the proposed method.It demonstrates the proposed method has potential to support the design of RF/IRcomposite guidance turntables，especially infrared composite equipment.

Keywords：radio frequency（RF）/infrared（IR）composite；hardware-in-the-loop simulation；composite guidance turntable；domain decomposition method；monopulse amplitude-comparison angle measurement

0 引言

半实物仿真实验是一种检验产品设计的重要手段，在实验室中进行全方位、重复性地测试，相比于传统的外场全物理仿真试验，可以极大降低实验难度、成本和开发风险，在雷达红外制导等领域应用广泛[]。（剩余14351字）