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- large Doppler estimation 大频偏估计
- This paper concerns relative technologies about carrier frequency synchronization and estimation in downlink signal in large doppler frequency shift condition. 本文对大多普勒频移情况中，下行信号载波频率同步估计的相关技术进行了研究。
- A large Doppler frequency shift estimation algorithm was proposed, which is called large Doppler frequency shift estimation algorithm based on AR model. 给出了一种适用于卫星通信的大频偏估计算法，文中称之为基于AR模型的大频偏估计算法。
- Two instantaneous Doppler estimation methods of wideband echoes based on Wigner-Ville Distribution (RND), a typical Time-Frequency Analysis method, are presented. 研究了基于 Wigner－Ville分布的宽带回波瞬时多普勒估计方法。
- Simulation results show that the new method eliminates the influence of large Doppler shifts effectively, with fast acquisition time. 仿真结果表明,这种方法可以有效地消除大Doppler频移的影响,迅速完成扩频码的捕获。
- But there are a lot of questions in DS-CDMA satellite communication system, such as the fading of received signal, the multiple access interference (MAI), large Doppler frequency offset, the CW and narrow band interferences in channel and so on. 但是，在DS-CDMA小卫星通信系统中，亦存在如下问题：如接收信号的衰落、多址干扰(MAI) 、大的多普勒频移、信道中的连续波(CW)及窄带干扰等。
- joint time delay Doppler estimation 联合时延多普勒估计
- large Doppler frequency shifting 大多普勒频移
- He bit off a large piece of the apple. 他咬下一大块苹果。
- Large billboards have disfigured the scenery. 大型告示板已破坏了景色。
- He has a large amount of mail to answer every day. 他每天有大量的信件要回复。
- His large income enabled him to live in comfort. 他那丰厚的收入使他可以过舒服的生活。
- He cooked the pasta in a large pan of boiling water. 他用一大锅开水煮义大利面食。
- The company declared a large dividend at the end of the year. 公司在年底宣布分发高额股息。
- He piloted us through the large factory. 他领我们参观了这个大工厂。
- Instantaneous Doppler estimation of wideband echoes based on Wigner-Ville distribution 基于Wigner-Ville分布的宽带回波瞬时多普勒估计方法
- Large air and navel forces were set into action. 庞大的空军和海军部队开始行动了。
- I had to spend a large sum of money to get it back. 我得花一大笔钱才把它弄回来。
- He has a large farm in the Mississippi Valley. 他在密西西比河流域拥有一个大农场。
- They clubbed together a large sum. 他们集资到一大笔款子。
