pf key 中文意思是什麼
pf key
解釋
程式功能鍵-
Present a modified particle filter ( pf ) algorithm based on the los / nlos binary state information of propagation environment using the numerical method of the probability density function ( pdf ) about the hybrid noise. the key idea is using numerical method to calculate the hybrid noise pdf, and integrating binary environment information to get filtering result
2 .給出了應用粒子濾波器改進直達波與非直達波混合環境中移動終端跟蹤性能的新演算法，特色是利用數值方法計算混合噪聲密度函數，結合二元環境信息完成濾波估計。 -
Pf series air fans are new low - speed high - flow - rate tube - axial fan. wich represents advantages of high flow, light weight, low noise and lower power consumption. they are key equipment of tunnet ventilation in houses of poultry & livestock poultry
Pf系列排風扇是新型的低速大流量軸流風機，具有流量大、重量輕、噪音低、耗電省等優點，是畜、禽舍縱向通風的關鍵設備。 -
Because of the advantages pf no range blind area, high range resolution and low signal power, recently lfmcw radars attracted more and more attention. the theories, key technologies and application develop rapidly
線性調頻連續波雷達由於具有無距離盲區、高距離解析度、低發射功率等方面的優點，近年來受到廣泛關注，其理論、關鍵技術和應用得到迅速發展。 -
The realization includes establishing and managing security association database in linux kernel, developing pf _ key socket interface and pf _ key message, and designing the state machines of ike main mode and ike quick mode
包括如何在內核中創建和管理安全關聯數據庫，如何實現pf _ key套接字介面和pf _ key消息，如何設計ike協議的主模式和快速模式的狀態機等等。 -
This paper has introduced the principle of isakmp, a protocol used in dynamical key exchange, and has accounted for the theory of ipc ( inter - process communication ) and a kind of new socket type pf _ key, as well as their messaging activity and related operations. the paper has mainly analyzed the procedure of building messages in kernel and its communication with application, the methods of managing messages and sadb. finally, it has presented a design of ipc ( inter - process communication ) between kernel and application according to pf _ key protocol, which makes various users communicate with each other on different channels created dynamically
本文簡要介紹了在ipsec中實現動態密鑰交換使用的通用框架協議? ? isakmp的基本原理；詳細闡述了進程間通信機制和pfkey協議的基本原理、消息行為及相關操作；著重分析了系統內核消息構造及其與應用層通信的過程和系統內核處理消息、管理安全關聯數據庫（ sadb ）的方法；最終提出了利用pfkey套介面協議在系統內核與應用層之間進行通信，為不同的用戶對動態地建立不同的安全通道的設計方案。
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