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粒子群優(yōu)化算法在無(wú)人分布式陣面的應(yīng)用
電子技術(shù)應(yīng)用
馮晨熙,,夏德平
南京電子技術(shù)研究所
摘要: 機(jī)載雷達(dá)受限于載機(jī)平臺(tái),無(wú)法獲得更大口徑的陣面,,而在無(wú)人機(jī)平臺(tái),,可將雷達(dá)陣面化整為零,在有限陣元數(shù)條件下,,采用稀布陣列可獲得更大口徑的陣面,。然而稀布陣列造成方向圖柵瓣和副瓣的抬高,需對(duì)稀布陣列進(jìn)行優(yōu)化,,消除柵瓣,、降低副瓣后方能使用。稀布陣列方向圖優(yōu)化是一個(gè)離散優(yōu)化問(wèn)題,,將粒子群優(yōu)化算法應(yīng)用于無(wú)人分布式雷達(dá)的稀布陣列上,,其算法原理簡(jiǎn)單,運(yùn)行速度快,,可調(diào)參數(shù)少,,以較少的陣元數(shù)獲得無(wú)柵瓣和低副瓣的方向圖,從而提升無(wú)人分布式陣面的性能,。
中圖分類號(hào):TN95 文獻(xiàn)標(biāo)志碼:A DOI: 10.16157/j.issn.0258-7998.245562
中文引用格式: 馮晨熙,,夏德平. 粒子群優(yōu)化算法在無(wú)人分布式陣面的應(yīng)用[J]. 電子技術(shù)應(yīng)用,2024,,50(9):125-129.
英文引用格式: Feng Chenxi,,Xia Deping. Application of particle swarm optimization algorithm in unmanned distributed array[J]. Application of Electronic Technique,2024,,50(9):125-129.
Application of particle swarm optimization algorithm in unmanned distributed array
Feng Chenxi,,Xia Deping
Nanjing Research Institute of Electronics Technology
Abstract: Airborne radar is limited by the carrier platform and cannot obtain a larger aperture array, while on unmanned aerial vehicle platforms, the radar array can be reduced to zero. Under the condition of finite array elements, a sparse array can be used to obtain a larger aperture array. However, sparse array can cause the elevation of directional grid lobes and side lobes, and it needs to be optimized to eliminate grid lobes and reduce side lobes before it can be used. The optimization of sparse array pattern is a discrete optimization problem. In this paper, the particle swarm optimization algorithm is applied to the sparse array of unmanned distributed radar. The algorithm principle is simple, the running speed is fast, the adjustable parameters are few, and the directional pattern without grid lobes and low sidelobes is obtained with fewer array elements, thereby improving the performance of unmanned distributed array.
Key words : particle swarm optimization algorithm;sparse arrays,;unmanned distributed array

引言

傳統(tǒng)的機(jī)載雷達(dá)受限于載機(jī)平臺(tái)的供電功率、載重,、體積,、形狀等因素,相較于地面和艦載雷達(dá),,天線口徑較小,,發(fā)射功率較低。隨著信息技術(shù)和無(wú)人機(jī)控制技術(shù)的飛速發(fā)展,,以無(wú)人機(jī)平臺(tái)作為載機(jī),,將大口徑的陣面化整為零,機(jī)載雷達(dá)可突破平臺(tái)對(duì)天線口徑的限制,。分布式無(wú)人機(jī)載雷達(dá)兼具成本低,、可快速部署,、單架機(jī)可替代、可消耗等優(yōu)點(diǎn)[1],。

相較于傳統(tǒng)機(jī)載雷達(dá),,分布式雷達(dá)天線設(shè)計(jì)面臨新的挑戰(zhàn)。為確保在不出現(xiàn)柵瓣的情況下獲得更好的天線方向圖,,工程上常規(guī)陣元間距會(huì)盡量設(shè)計(jì)為λ/2,。然而無(wú)人機(jī)間飛行間距受限,常常不能滿足λ/2的最優(yōu)方案,,陣元間距會(huì)達(dá)到λ甚至更遠(yuǎn),,柵瓣的出現(xiàn)不可避免 [2-3]。在天線陣元間距增大的情況下,,本文通過(guò)優(yōu)化稀布陣列的分布,,消除柵瓣,兼具滿足大口徑需求和均勻陣列的性能,。


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作者信息:

馮晨熙,,夏德平

(南京電子技術(shù)研究所,江蘇 南京 210039)


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