Digital delaying compensation device and method and achieving device and method

Abstract

The invention discloses a digital delaying compensation device and method and an achieving device and method. The digital delaying compensation device is used for compensating time delay between frequency modulation signals aiming at the broadband digital array radar aperture transition time. The device comprises a receiving module and a compensation module. The receiving module is used for receiving frequency modulation signals. The expression of the frequency modulation signals is provided as follows, wherein t stands for time, t0 stands for delay, S (t, t0) stands the modulation signals delayed for t0 from t, f0 stands for center frequency, B stands for signal bandwidth, and T0 stands for pulse width. The compensation module is used for compensating the frequency modulation signals. The expression of the frequency modulation signals is provided as follows, wherein the fi is the initial frequency, and the delay of the frequency modulation signals is compensated.

Description

technical field [0001] The present invention is mainly used in the wideband digital array radar industry, and in particular relates to a digital delay compensation method for wideband digital array radar aperture transit time belonging to the field of electronic information technology, a digital delay compensation device applying the digital delay compensation method, and a digital Delay compensation device. Background technique [0002] Phased array radar has agile and fast beam scanning and agility capabilities, and can realize the advantages of multi-target interception, tracking, and self-adaptation; while the signal with large instantaneous bandwidth can improve the anti-jamming ability of phased array radar, and has higher measurement accuracy. The distance accuracy and resolution are beneficial to the imaging, recognition and classification of targets. Therefore, broadband phased array radar technology is one of the main directions of modern radar technology developm...

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Problems solved by technology

[0003] However, for large-bandwidth signals, due to the aperture transition problem of phased array radar, the traditional phase-shifting method will lead to inconsistent beam directions of multi-channel transmit beams of different frequencies in space, and the spatial synthesis of broadband transmit beams cannot be completed. The spatial synthesis of large bandwidth signal beams can be realized by delay compensation

The analog delay line can achieve the purpose of compensating the delay, but it is expensive, has limited quantization accuracy, and is bulky, which is obviously not advisable for modern array radars with hundreds of thousands

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