Waveform design method based on inter-pulse phase spectrum double agility

A technology of waveform design and phase spectrum, applied in radio wave measurement systems, instruments, etc., can solve problems such as clutter folding, lifting clutter base, distance ambiguity of PD radar system, etc., achieve good sidelobe characteristics, improve suppression ability, The effect of reducing reproducibility
CN113640752APending Publication Date: 2021-11-12BEIJING INSTITUTE OF TECHNOLOGYGY
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
BEIJING INSTITUTE OF TECHNOLOGYGY
Publication Date
2021-11-12

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Abstract

The invention discloses a waveform design method based on inter-pulse phase spectrum double agility. According to the method, a generated PD radar signal waveform has a stronger range gating characteristic through employing phase coding between pulses and employing different modulation modes in the pulses to improve the inhibition capability of range ambiguity and folded clutter, and the replicability of the signal is reduced based on an inter-pulse phase spectrum double-agility signal, so that the initiative of interference confrontation is mastered from the angle of radar waveform.
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Description

technical field

[0001] The invention belongs to the technical field of radar waveform design, and in particular relates to a waveform design method based on double-agility inter-pulse phase spectrum. Background technique

[0002] Pulse Doppler (Pulse Doppler, PD) radar uses the Doppler effect of the echo on the basis of distance dimension resolution, and can realize effective resolution between targets at different speeds, and between moving targets and clutter. In a traditional PD radar system, in order to achieve coherent accumulation between pulses and fast calculation using FFT, usually within a coherent processing cycle (Coherent Processing Interval, CPI) with a fixed pulse repetition time (Pulse RepetitionTime, PRT) or Pulse repetition frequency (Pulse Repetition Frequency, PRF) transmits a series of identical coherent pulses. By performing fast-time pulse compression and slow-time Fourier transform processing on the received echo, the coherent accumulation of echo ene...

Claims

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