雙通道脈間變頻外場RCS測試雷達的研究
Research on Two-Channels Pulse to Pulse Frequency Shifting Outdoor RCS Measurement Radar
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摘要: 該文研究了雙通道脈間變頻外場RCS測試雷達的設(shè)計方法，提出了一種波形設(shè)計和系統(tǒng)實現(xiàn)的途徑。分析了目標像的失真與頻率的數(shù)值關(guān)系。根據(jù)雙通道雷達可以同時在2個頻段上進行測試的特點，提出了一種根據(jù)測試數(shù)據(jù)推算目標徑向速度的方法，從而能夠進一步校正被測目標速度對成像的影響。使用該方法對外場實測數(shù)據(jù)進行了處理，處理后的目標像幅度有所提高，主瓣變窄，從而分辨率得到了提高。
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關(guān)鍵詞:
- 雙通道雷達; 脈間變頻; 校正目標速度影響
Abstract: Design of two-channels high-range-resolution pulse to pulse frequency shifting RCS outdoor measurement radar is researched. A waveform design and a system realization method are presented. The numerical relationship between range-profiles distortion and frequency is analyzed. A method to calculate the targets radial velocity by the measurement results is discussed based on the architecture that the radar can measure the target on two different frequency band at the same time. The targets radial velocity effect on range profile can be corrected. The method is used to process the real outdoor measured data. The amplitude of the targets imaging is boosted and the major lobe of the targets imaging become narrower after being corrected. -
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