dvb ca 移植接口代碼及文檔說明。有對ST、V、I、C卡的處理說明,并給出了怎樣使一臺機(jī)頂盒支持多種智能卡的偽代碼!
上傳時間: 2016-12-26
上傳用戶:jqy_china
現(xiàn)代雷達(dá)普遍采用相參信號處理,而如何獲得高精度基帶數(shù)字正交( I , Q) 信號是整個系統(tǒng)信號處理成敗的關(guān)鍵,以前通常的做法是采用模擬相位檢波器得到I、Q信號,其正交性能一般為:幅度平衡在2 % 左右, 相位正交誤差在2°左右,即幅相誤差引入的鏡像功率在- 34dB 左右。這限制了信號處理器性能的提高, 為此, 近年來提出了對低中頻直接采樣恢復(fù)I、Q 信號的數(shù)字相位檢波器。隨著高位、高速A/ D 的研制成功和普遍應(yīng)用,使得數(shù)字相位檢波方法的實(shí)現(xiàn)成為可能。 對信號進(jìn)行中頻直接采樣和數(shù)字正交處理后,產(chǎn)生的I 支路和Q 支路信號序列在時間上會錯開一個采樣間隔,需要進(jìn)行定序處理,恢復(fù)成同步輸出的I、Q 兩路信號序列。
標(biāo)簽: 信號處理 信號 現(xiàn)代雷達(dá) 基帶
上傳時間: 2016-12-27
上傳用戶:yxgi5
中頻驗波是對信號進(jìn)行中頻直接采樣和數(shù)字正交處理后,產(chǎn)生的I 支路和Q 支路信號序列在時間上會錯開一個采樣間隔,需要進(jìn)行定序處理,恢復(fù)成同步輸出的I、Q 兩路信號序列。現(xiàn)代雷達(dá)普遍采用相參信號處理,而如何獲得高精度基帶數(shù)字正交( I , Q) 信號是整個系統(tǒng)信號處理成敗的關(guān)鍵,以前通常的做法是采用模擬相位檢波器得到I、Q信號,其正交性能一般為:幅度平衡在2 % 左右, 相位正交誤差在2°左右,即幅相誤差引入的鏡像功率在- 34dB 左右。這限制了信號處理器性能的提高, 為此, 近年來提出了對低中頻直接采樣恢復(fù)I、Q 信號的數(shù)字相位檢波器。隨著高位、高速A/ D 的研制成功和普遍應(yīng)用,使得數(shù)字相位檢波方法的實(shí)現(xiàn)成為可能。
上傳時間: 2016-12-27
上傳用戶:kr770906
<I believe> song _verilog code for any device.
標(biāo)簽: believe verilog device code
上傳時間: 2013-12-22
上傳用戶:wys0120
酒吧老板價格表vbkkljl個ipfgik皮帶 東風(fēng)康帕斯飛 帕斯克哦佛i 日減肥假話騙人 歐冠歐賠健康的飛機(jī)
上傳時間: 2014-01-09
上傳用戶:WMC_geophy
Java is the first language to provide a cross-platform I/O library that is powerful enough to handle all these diverse tasks. Java is the first programming language with a modern, object-oriented approach to input and output. Java s I/O model is more powerful and more suited to real-world tasks than any other major language used today. Java I/O is the first and still the only book to fully expose the power and sophistication of this library.
標(biāo)簽: cross-platform language powerful provide
上傳時間: 2014-01-07
上傳用戶:pompey
89C51 單片機(jī) I/O 口模擬串行通信的實(shí)現(xiàn)方法
標(biāo)簽: 89C51 單片機(jī) 串行通信 模擬
上傳時間: 2016-12-28
上傳用戶:youke111
詳細(xì)介紹了LPC2132的I/O實(shí)驗中蜂鳴器實(shí)驗的原程序以及引腳的設(shè)置等
標(biāo)簽: 2132 LPC 實(shí)驗 詳細(xì)介紹
上傳時間: 2013-12-22
上傳用戶:z754970244
包含三個CC2430的I/O測試程序。程序基于IAR軟件編寫,用來控制片上LED的開關(guān)及閃爍。通過適當(dāng)修改同樣可以用于CC1110的開發(fā),估計對開發(fā)無線傳感器網(wǎng)絡(luò)的相關(guān)人士比較重要。
上傳時間: 2014-08-30
上傳用戶:hasan2015
The AVRcam source files were built using the WinAVR distribution (version 3.3.1 of GCC). I haven t tested other versions of GCC, but they should compile without too much difficulty. * The source files for the AVRcam had the author name and copyright information added back into them after the judging of the project, since it states in the competition rules that the author s name can not be present during their inspection. * The included source files are the ones that were submitted for the entry into the Circuit Cellar contest. I have continued to develop the AVRcam, and have added several new features (such as ignoring objects that aren t larger than a minimum size, removing tracked objects that overlap with each, and some general optimizations). If you are interested in the latest source, email me at john@jrobot.net * For more info about the AVRcam, check out http://www.jrobot.net John Orlando August 20, 2004
標(biāo)簽: distribution version AVRcam source
上傳時間: 2016-12-30
上傳用戶:GavinNeko
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