Assignment First

碩士論文代寫:幹擾器的解決方案

幹擾器是專門設計用來幹擾蜂窩和其他移動設備的發射器。當它被使用時,它暫時會阻止設備和基站之間的細胞活動。它暫時為所有的手機流量創造了一個“死區”。它最初是為執法部門和軍隊開發的。此外,RAW、ISI等安全機構利用幹擾機保護政府部門。除了強制性幹擾器等極端措施之外,還有更多建設性的解決方案。

碩士論文代寫:幹擾器的解決方案

首先,技術必須用來解決問題,這是由技術造成的。大多數新的通信系統和計算設備都增加了免提功能來保存系統。為了解決幹擾機引起的技術問題,需要進行駕駛員教育。人民群眾需要越來越多地增加和加強這些工作。
子空間投影技術是從抗幹擾調頻接收機中發展起來的。這些技術是基於估計的GPS接收器中間信號。由於信號的非平穩性,利用中頻信息構造調頻幹涉子空間。由於GPS擴頻信號結構的特點,典型系統中接收機的信噪比不同。理論和仿真結果表明,子空間投影技術可以有效地去除GPS接收機的幹擾。

碩士論文代寫:幹擾器的解決方案

Jammers are the transmitters, which are specifically designed to disrupt cellular and other mobile devices. When it is used, it for the time being disables the cellular activity between the device and base-station. It creates a “Dead Zone” to all cell-phone-traffic temporarily. It is originally developed for the law-enforcement and the military. Moreover, the security agencies such as RAW, ISI, etc. use jammer for the purpose of protection of government ministry. There are more constructive solutions than extreme measures like mandatory jammers.

碩士論文代寫:幹擾器的解決方案

At first, the technology has to be used to the problem, which is created by the technology. Most new communication systems and computing devices have been increasing the hands-free features to save the system. The driver education is much needed for the solution of the technology problem caused by the jammers. The people need to increase and step up these efforts more and more.

Subspace projection techniques are adapted from the anti-jamming FM receivers. These techniques are based on the estimated intermediate signal of the GPS receivers . The IF information is used to construct the FM interference subspace because of signal non-stationarity. Due to the characteristic of GPS spread spectrum signal structure, the S/N ratio of the receivers become different in typical systems. The theoretical and simulation outcomes suggest that the subspace projection techniques can excise the GPS jammers for GPS receivers.