IFdetector

说明：  现代雷达普遍采用相参信号处理,而如何获得高精度基带数字正交( I , Q) 信号是整个系统信号处理成败的关键,以前通常的做法是采用模拟相位检波器得到I、Q信号,其正交性能一般为:幅度平衡在2 ％ 左右, 相位正交误差在2°左右,即幅相误差引入的镜像功率在- 34dB 左右。这限制了信号处理器性能的提高, 为此, 近年来提出了对低中频直接采样恢复I、Q 信号的数字相位检波器。随着高位、高速A/ D 的研制成功和普遍应用,使得数字相位检波方法的实现成为可能。 对信号进行中频直接采样和数字正交处理后,产生的I 支路和Q 支路信号序列在时间上会错开一个采样间隔,需要进行定序处理,恢复成同步输出的I、Q 两路信号序列。(err)

IF detector
...........\din5
...........\....\conter.bsf
...........\....\conter.inc
...........\....\conter.vhd
...........\....\db
...........\....\..\add_sub_2rh.tdf
...........\....\..\add_sub_3ph.tdf
...........\....\..\add_sub_3rh.tdf
...........\....\..\add_sub_4ph.tdf
...........\....\..\add_sub_voh.tdf
...........\....\..\altsyncram_fm51.tdf
...........\....\..\altsyncram_hk61.tdf
...........\....\..\altsyncram_vk61.tdf
...........\....\..\cntr_jeh.tdf
...........\....\..\cntr_leh.tdf
...........\....\..\din5.asm.qmsg
...........\....\..\din5.cbx.xml
...........\....\..\din5.cmp.cdb
...........\....\..\din5.cmp.hdb
...........\....\..\din5.cmp.kpt
...........\....\..\din5.cmp.logdb
...........\....\..\din5.cmp.rdb
...........\....\..\din5.cmp.tdb
...........\....\..\din5.cmp0.ddb
...........\....\..\din5.dbp
...........\....\..\din5.db_info
...........\....\..\din5.eco.cdb
...........\....\..\din5.eds_overflow
...........\....\..\din5.epe.qmsg
...........\....\..\din5.fit.qmsg
...........\....\..\din5.fnsim.hdb
...........\....\..\din5.fnsim.qmsg
...........\....\..\din5.hier_info
...........\....\..\din5.hif
...........\....\..\din5.map.cdb
...........\....\..\din5.map.hdb
...........\....\..\din5.map.logdb
...........\....\..\din5.map.qmsg
...........\....\..\din5.pre_map.cdb
...........\....\..\din5.pre_map.hdb
...........\....\..\din5.psp
...........\....\..\din5.rtlv.hdb
...........\....\..\din5.rtlv_sg.cdb
...........\....\..\din5.rtlv_sg_swap.cdb
...........\....\..\din5.sgdiff.cdb
...........\....\..\din5.sgdiff.hdb
...........\....\..\din5.signalprobe.cdb
...........\....\..\din5.sim.hdb
...........\....\..\din5.sim.qmsg
...........\....\..\din5.sim.rdb
...........\....\..\din5.sim.vwf
...........\....\..\din5.sld_design_entry.sci
...........\....\..\din5.sld_design_entry_dsc.sci
...........\....\..\din5.syn_hier_info
...........\....\..\din5.tan.qmsg
...........\....\..\wed.zsf
...........\....\din5.asm.rpt
...........\....\din5.bdf
...........\....\din5.bsf
...........\....\din5.cdf
...........\....\din5.done
...........\....\din5.dpf
...........\....\din5.epe.rpt
...........\....\din5.epe.summary
...........\....\din5.fit.rpt
...........\....\din5.fit.smsg
...........\....\din5.fit.summary
...........\....\din5.flow.rpt
...........\....\din5.map.rpt
...........\....\din5.map.summary
...........\....\din5.pin
...........\....\din5.pof
...........\....\din5.qpf
...........\....\din5.qsf
...........\....\din5.qws
...........\....\din5.sim.rpt
...........\....\din5.sof
...........\....\din5.tan.rpt
...........\....\din5.tan.summary
...........\....\din5.vwf
...........\....\din5_early_pwr.txt
...........\....\div2.bsf
...........\....\div2.vhd
...........\....\div5.bsf
...........\....\div5.vhd
...........\....\I5.bsf
...........\....\I5.vhd
...........\....\move.bdf
...........\....\move.bsf
...........\....\rom.bsf
...........\....\rom.inc
...........\....\rom.vhd
...........\....\rom1.bsf
...........\....\rom1.inc
...........\....\rom1.vhd
...........\....\untitled2.pof
...........\....\Vhdl1.vhd
...........\....\Waveform1.vwf
...........\....\Waveform11.vwf