Dynamic Stability Analysis of Backhoe Dredger Based on Time Domain Method

Chen, Yihua; Chen, Xinquan; Yang, Qi; Ouyang, Yiping

doi:10.1007/s12204-021-2272-x

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2023

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“…The aperiodic multistage array can also effectively suppress the grating lobe while increasing the array element spacing [10,11], thereby improving the spatial resolution of the beam and solving the anti-jamming problem for satellite communications in the EHF band. The method of optimizing the distribution of sub-arrays based on particle swarm optimization was proposed in [12]. In [13], the grating lobe level was reduced by dividing the scanning region, and the principle of scanning region division was given.…”

Section: λ/mentioning

confidence: 99%

Interference suppression for satellite communications in EHF band based on aperiodic multistage arrays

Jiebin,

Wenquan,

Hao

et al. 2023

J. of Syst. Eng. Electron.

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The direction of ground-based interference reaching the satellite is generally very close to the spot beam of the satellite. The traditional array anti-jamming method may cause significant loss to the uplink signal while suppressing the interference. In this paper, an aperiodic multistage array is used, and a subarray aperiodic distribution optimization scheme based on parallel differential evolution is proposed, which effectively improves the beam resolution and suppresses the grating lobe. On this basis, a two-stage signal processing method is used to suppress interference. Finally, the comprehensive performance of the proposed scheme is evaluated and verified.

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