發(fā)布時(shí)間：2018-02-12 00:15

  本文關(guān)鍵詞： 全球定位系統(tǒng) 切換策略 高動(dòng)態(tài) 判決器 跟蹤 抖動(dòng)　出處：《現(xiàn)代防御技術(shù)》2017年02期 　論文類型：期刊論文

【摘要】：針對(duì)基于環(huán)路切換的傳統(tǒng)GPS跟蹤環(huán)路,會(huì)因?yàn)檩d體運(yùn)動(dòng)背景的復(fù)雜性而出現(xiàn)環(huán)路切換頻繁,造成環(huán)路抖動(dòng)和跟蹤效果差的問題,提出了基于環(huán)路切換策略的高動(dòng)態(tài)載波跟蹤算法。該算法首先利用頻率、相位判決器選擇帶有切換策略的子環(huán)路工作,然后利用切換策略模塊去控制子環(huán)路對(duì)信號(hào)進(jìn)行跟蹤。仿真結(jié)果表明:載體在信號(hào)強(qiáng)度為45 d B·Hz,以5 g和10 g加速度分時(shí)間段做勻加速運(yùn)動(dòng)的場景下,基于環(huán)路切換策略的高動(dòng)態(tài)載波跟蹤算法能使得環(huán)路的切換次數(shù)和抖動(dòng)現(xiàn)象明顯減少,跟蹤效果更佳。
[Abstract]:For the traditional GPS tracking loop based on loop switching, the loop switching occurs frequently because of the complexity of the moving background of the carrier, which results in the loop jitter and poor tracking effect. A high dynamic carrier tracking algorithm based on loop switching strategy is proposed. Then the switching strategy module is used to control the sub-loop to track the signal. The simulation results show that the carrier moves uniformly in the signal intensity of 45 dB 路Hz with acceleration of 5 g and 10 g respectively. The high dynamic carrier tracking algorithm based on loop switching strategy can reduce the frequency and jitter of the loop obviously, and the tracking effect is better.
【作者單位】： 重慶文理學(xué)院電子電氣學(xué)院;
【基金】：重慶市教委科技項(xiàng)目(KJ131208) 重慶文理學(xué)院校級(jí)科研項(xiàng)目(Y2014DQ31)
【分類號(hào)】：P228.4
，

本文編號(hào)：1504343