forming of a signal, GLONASS system, coherent reception, graph autocorrelation, crosscorrelation function, bit-error probability[SNR]
标签： crosscorrelation autocorrelation reception coherent
上传时间： 2013-12-27
上传用户：小鹏
code for show a ecography using beam forming
标签： ecography forming using code
上传时间： 2017-09-26
上传用户：yuchunhai1990
This paper presents the key circuits of a 1MHz bandwidth, 750kb/s GMSK transmitter. The fractional-N synthesizer forming the basis of the transmitter uses a combined phasefrequency detector (PFD) and digital-to-analog converter (DAC) circuit element to obtain >28dB high frequency noise reduction when compared to classicalfrequency synthesis.
标签： fractional-N transmitter bandwidth circuits
上传时间： 2016-04-14
上传用户：er1219
The existence of numerous imaging modalities makes it possible to present different data present in different modalities together thus forming multimodal images. Component images forming multimodal images should be aligned, or registered so that all the data, coming from the different modalities, are displayed in proper locations. The term image registration is most commonly used to denote the process of alignment of images , that is of transforming them to the common coordinate system. This is done by optimizing a similarity measure between the two images. A widely used measure is Mutual Information (MI). This method requires estimating joint histogram of the two images. Experiments are presented that demonstrate the approach. The technique is intensity-based rather than feature-based. As a comparative assessment the performance based on normalized mutual information and cross correlation as metric have also been presented.
标签： present modalities existence different
上传时间： 2017-04-03
上传用户：qunquan
-The existence of numerous imaging modalities makes it possible to present different data present in different modalities together thus forming multimodal images. Component images forming multimodal images should be aligned, or registered so that all the data, coming from the different modalities, are displayed in proper locations. Mutual Information is the similarity measure used in this case for optimizing the two images. This method requires estimating joint histogram of the two images. The fusion of images is the process of combining two or more images into a single image retaining important features from each. The Discrete Wavelet Transform (DWT) has become an attractive tool for fusing multimodal images. In this work it has been used to segment the features of the input images to produce a region map. Features of each region are calculated and a region based approach is used to fuse the images in the wavelet domain.
标签： present modalities existence different
上传时间： 2014-03-04
上传用户：15736969615
The Schumann resonance frequencies are a set of eigenmodes in the extremely low frequency (ELF) portion of the electromagnetic field spectrum. These frequencies are only present for planetary-like bodies with a substantial ionosphere acting as a perfect electric conductor, thus forming a resonance cavity with the surface. In this example, the Schumann resonance frequencies for the Earth are calculated.
标签： frequencies eigenmodes resonance extremely
上传时间： 2014-12-09
上传用户：stella2015
Communication has been one of the deepest needs of the human race throughout recorded history. It is essential to forming social unions, to educating the young, and to expressing a myriad of emotions and needs. Good communication is central to a civilized society. The various communication disciplines in engineering have the purpose of providing technological aids to human communication. One could view the smoke signals and drum rolls of primitive societies as being technological aids to communication, but communication technology as we view it today became important with telegraphy, then telephony, then video, then computer communication, and today the amazing mixture of all of these in inexpensive, small portable devices.
标签： communication Principles digital of
上传时间： 2020-05-31
上传用户：shancjb
For more than three decades, Micro Electro Mechanical Systems (MEMS) have steadily transitioned out of research labs and into production forming a more than $10 billion market [1]. MEMS devices such as accelerometers, pressure sensors and microphones, to name a few, have seen immense utilization, particularly in the consumer electronics market, because of their compact sizes and minute power consumptions. In addition, these devices benefit from batch fabrication, which has enabled year-over-year reductions in cost [2]. In recent years,
上传时间： 2020-06-06
上传用户：shancjb
ALTIUM AD集成库 原理图库 PCB封装库 AD19 AD17器件库元件库嘉立创PCB库559个封装，均是项目中用到的器件，可以做为你的设计参考。PCB Library : Miscellaneous Devices LC.PcbLibDate : 2020/12/25Time : 13:36:44Component Count : 559LC-0201LC-0201_CLC-0201_LLC-0201_RLC-0402LC-0402_CLC-0402_LLC-SOT-523LC-SOT-666LC-SOT-723LC-SOT-753LC-SOT-883LC-SPMCA-027LC-SSOP-10_150milLC-SSOP-14_208milLC-SSOP-16_150milLC-SSOP-16_208milLC-SSOP-20_150milLC-SSOP-20_208milLC-SSOP-24_208milLC-SSOP-28_150milLC-SSOP-28_208milLC-SSOP-36_300milLC-SSOP-44KLC-SSOP-48_300milLC-SSOP-56_300milLC-SSOP-B40LC-STSOP-32LC-SuperSOT-3LC-SuperSOT-6LC-TBSLC-TDFN-14_EPLC-TFBGA-64LC-TFBGA-180LC-TO-3LC-TO-3PLC-TO-3P-5LLC-TO-39LC-TO-52LC-TO-92_forming1LC-TO-92_forming2LC-TO-92(TO-92-3)LC-TO-92-2LC-TO-92-3LLC-TO-92LLC-TO-92MODLC-TO-126LC-TO-126-4LC-TO-202LC-TO-218LC-TO-220(TO-220-3)LC-TO-220-5LC-TO-220-5(forming)LC-TO-220-7CLC-TO-220AC(TO-220-2)LC-TO-220F(TO-220IS)LC-TO-220F-4L(forming)LC-TO-225LC-TO-247(AC)LC-TO-251(I-PAK)LC-TO-252-2LC-TO-252-2-180LC-TO-252-3LC-TO-252-5LC-TO-263-2LC-TO-263-3LC-TO-263-5LC-TO-263-7LC-TO-264LC-TO-274AA(Super-247)LC-TO-277A(SMPC)LC-TOP3LC-TQFN-16_2.5x2.5x04PLC-TQFN-16_4x4x065PLC-TQFN-20_2.5x4.5x05PLC-TQFN-24_EP_4x5x05PLC-TQFP-32_5x5x05PLC-TQFP-32_7x7x08PLC-TQFP-44_10x10x08PLC-TQFP-48_7x7x05PLC-TQFP-52_10x10x065PLC-TQFP-64_10x10x05PLC-TQFP-64_14x14x08PLC-TQFP-80_12x12x05PLC-TQFP-100_12x12x04PLC-TQFP-100_14x14x05PLC-TQFP-100_14x20x065PLC-TQFP-128_14x14x04PLC-TQFP-128_20x14x05PLC-TQFP-144_20x20x05PLC-TSOC-6LC-TSOP(II)-44LC-TSOP(II)-54LC-TSOP(II)-66LC-TSOP-5LC-TSOP-6LC-TSOP-28LC-TSOP-32LC-TSOP-48LC-TSOP-56_14x20mmLC-TSOT-23-5LC-TSOT-23-6LC-TSOT-23-8LC-TSSOP-8_2.3x2x05PLC-TSSOP-8_3x3x065PLC-TSSOP-8_3x4.4x065PLC-TSSOP-10LC-TSSOP-14LC-TSSOP-16LC-TSSOP-20LC-TSSOP-24LC-TSSOP-28LC-TSSOP-30LC-TSSOP-38LC-TSSOP-48LC-TSSOP-56LC-TVSOP-48LC-uDFN-6LC-UFQFPN-20LC-UFQFPN-48LC-uMAX-8LC-UMLP-10LC-US8LC-USC(SOD-323)LC-USM(SC-70-3)LC-USV(SC-70-5)LC-VDFPN-8(MLP-8)LC-VFBGA-20LC-VFBGA-48LC-VFBGA-54_8x14mmLC-VFBGA-63LC-VFQFPN-36_6x6x05PLC-VMN2LC-VQFN-14_3.6x3.6x05PLC-VQFN-16_3.6x3.6x05PLC-VQFN-20_5x5x065PLC-VQFN-24_3.5x5.5x05PLC-VQFN-32_4x4x04PLC-VQFN-40_6x6x05PLC-VQFN-48_7x7x05PLC-VSO-56LC-VSON-8LC-VSON-14_3x4x05PLC-VSSOP-8_2x2.3x05PLC-VSSOP-8_3x3x065PLC-VSSOP-8_EP_3x3x065PLC-VSSOP-10LC-WBGA-84_8x12.5mmLC-WBGA-96LC-WCSP-5LC-WDFN-10LLC-WLCSP-8LC-WOBLC-WPAK-8LC-WQFN-10LC-WSON-8_2x2mmLC-WSON-8_5x6mmLC-WSON-10_2.5x2.5mmLC-XSON-6_1x1.45mmLC-ZIP-23LC-ZIP19-1--------------
标签： altium designer 封装库
上传时间： 2022-03-17
上传用户：
