方泽邈,郭恩全,肖宁,汤兴刚,周开基.双频测试信号源谐波影响分析[J].国外电子测量技术,2016,35(11):58-62
双频测试信号源谐波影响分析
Analysis of signal source harmonic’s influence to double frequency test
  
DOI:
中文关键词:  双频自动测试技术  接收机  谐波  双频图识别
英文关键词:double frequency automated test technique  receiver  harmonic  double frequency diagram identification
基金项目:国家国际科技合作专项(2015DFR10170)资助
作者单位
方泽邈 1.中国船舶重工集团第705研究所 西安 710075;2.陕西海泰电子有限责任公司 西安 710075 
郭恩全 1.中国船舶重工集团第705研究所 西安 710075;2.陕西海泰电子有限责任公司 西安 710075 
肖宁 1.中国船舶重工集团第705研究所 西安 710075;2.陕西海泰电子有限责任公司 西安 710075 
汤兴刚 陕西海泰电子有限责任公司 西安 710075 
周开基 陕西海泰电子有限责任公司 西安 710075 
AuthorInstitution
Fang Zemiao 1.The 705 Research Institute of CISC, Xi’an 710075,China;2.Shaanxi Hitech Electronic Co. Ltd. ,Xi’an 710075,China 
Guo Enquan 1.The 705 Research Institute of CISC, Xi’an 710075,China;2.Shaanxi Hitech Electronic Co. Ltd. ,Xi’an 710075,China 
Xiao Ning 1.The 705 Research Institute of CISC, Xi’an 710075,China;2.Shaanxi Hitech Electronic Co. Ltd. ,Xi’an 710075,China 
Tang Xinggang Shaanxi Hitech Electronic Co. Ltd. ,Xi’an 710075,China 
Zhou Kaiji Shaanxi Hitech Electronic Co. Ltd. ,Xi’an 710075,China 
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中文摘要:
      双频自动测试技术能够快速检测与识别接收机所有的信号通道和干扰路径,获取接收机的非线性响应特性,可对无线电接收机的电磁环境适应性做全面的评估,但其测试结果会受到信号源谐波的影响,使得对接收机的评价与实际偏离。为确保测试结果可靠,需要对信号源谐波抑制度指标提出合理要求。通过对接收机响应进行数学推导和仿真,分析了信号源谐波的影响,给出并验证了双频自动测试系统应如何对信号源谐波抑制度进行选择,即对一般的接收机,进行双频自动测试识别接收机的信号通道和干扰路径时,保守情况下信号源谐波抑制度应优于-60 dBc。
英文摘要:
      Double Frequency Automated Test Technique can detect and identify all receive channels and interference paths of receivers rapidly, obtain nonlinear response characteristics of receivers, and estimate electromagnetic environment adaptability of receivers thoroughly. But the test result would be influenced by harmonics of signal sources, which makes estimation to the receivers different from the truth. To ensure reliability of the test result, it is necessary to set reasonable requirement for signal sources’ harmonic suppression. By mathematical deduction and simulation of receivers’ responses, this paper analyzes the influence of signal sources’ harmonics, proposes and verifies how to choose harmonic suppression of signal source when constructing Double Frequency Automated Test System. That is, for general receivers, harmonic suppression of signal source should be better than -60 dBc for the worst case to identify receivers’ receive channels and interference paths while using Double Frequency Automated Test.
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