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

【摘要】：針對基于環(huán)路切換的傳統(tǒng)GPS跟蹤環(huán)路,會因為載體運動背景的復雜性而出現環(huán)路切換頻繁,造成環(huán)路抖動和跟蹤效果差的問題,提出了基于環(huán)路切換策略的高動態(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)路對信號進行跟蹤。仿真結果表明:載體在信號強度為45 d B·Hz,以5 g和10 g加速度分時間段做勻加速運動的場景下,基于環(huán)路切換策略的高動態(tài)載波跟蹤算法能使得環(huán)路的切換次數和抖動現象明顯減少,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】： 重慶文理學院電子電氣學院;
【基金】：重慶市教委科技項目(KJ131208) 重慶文理學院校級科研項目(Y2014DQ31)
【分類號】：P228.4
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本文編號：1504343