| ²é¿´: 519 | »Ø¸´: 3 | ||
juanlehehe½ð³æ (ÖøÃûдÊÖ)
|
[ÇóÖú]
·ÒëÈý¾ä»° ÒÑÓÐ1È˲ÎÓë
|
|
Power delay profile (PDP) was investigated to give an overview of broadband channel model. Thereafter, a long delay caused by the obturation of tunnel is observed and investigated in all the scenarios. The measurements show that the reflection can be greatly remained by the tunnel,which leads to long delay cluster where the reflection, but direct ray, makes the main contribution for radio wave propagation. |
» ²ÂÄãϲ»¶
Çó»úеר˶297µÚ¶þÅúµ÷¼Á
ÒѾÓÐ3È˻ظ´
285Çóµ÷¼Á
ÒѾÓÐ20È˻ظ´
Óб¬ÁÏ£¬Ò»¸öÇàÄê½ÌʦÂô·¿µÃ400Íò£¬È»ºó»»ÁËÒ»¸öËÄÇàñ×Ó
ÒѾÓÐ5È˻ظ´
²ÄÁÏ·½Ïò¿¼²©£¬ÇóÍÆ¼ö
ÒѾÓÐ4È˻ظ´
070300»¯Ñ§ Çóµ÷¼Á
ÒѾÓÐ8È˻ظ´
µ÷¼Á
ÒѾÓÐ9È˻ظ´
331Çóµ÷¼Á
ÒѾÓÐ5È˻ظ´
¸´ÊÔµ÷¼Á£¬Ò»Ö¾Ô¸Ö£ÖÝ´óѧ²ÄÁÏÓ뻯¹¤289·Ö
ÒѾÓÐ9È˻ظ´
Ò»Ö¾Ô¸211£¬0703»¯Ñ§305·ÖÇóµ÷¼Á
ÒѾÓÐ26È˻ظ´
311Çóµ÷¼Á
ÒѾÓÐ11È˻ظ´
wangjade6181
ÖÁ×ðľ³æ (ÖøÃûдÊÖ)
- Ó¦Öú: 3 (Ó×¶ùÔ°)
- ¹ó±ö: 0.01
- ½ð±Ò: 13036.1
- É¢½ð: 755
- ºì»¨: 6
- Ìû×Ó: 1868
- ÔÚÏß: 313.9Сʱ
- ³æºÅ: 742646
- ×¢²á: 2009-04-07
- ÐÔ±ð: GG
- רҵ: ÉúÎïµç×ÓѧÓëÉúÎïÐÅÏ¢´¦Àí
¡ï ¡ï
°¢·É1990¹Ô¹Ô: ½ð±Ò+2, ¸Ðл³æÓÑÈÈÐÄÓ¦Öú¡£ 2014-04-24 15:43:39
°¢·É1990¹Ô¹Ô: ½ð±Ò+2, ¸Ðл³æÓÑÈÈÐÄÓ¦Öú¡£ 2014-04-24 15:43:39
|
Power delay profile (PDP) was investigated to give an overview of broadband channel model. --£¨ÎÒÃÇ£©Ñо¿Á˹¦ÂÊÑÓʱ·Ö²¼£¬ÆÚÍûµÃµ½¿í´øÐŵÀÄ£Ð͵ÄÒ»¸ö¸Å¿ö¡£ Thereafter, a long delay caused by the obturation of tunnel is observed and investigated in all the scenarios. --´ÓÄÇÒԺ󣬣¨ÎÒÃÇ£©¹Û²âµ½ÁËÓÉÓÚͨµÀ±ÕÈûµ¼Öµij¤ÑÓʱ£¬²¢ÇÒÑо¿Á˸÷ÖÖÇé¾°¡£ The measurements show that the reflection can be greatly remained by the tunnel,which leads to long delay cluster where the reflection, but direct ray, makes the main contribution for radio wave propagation. --²âÁ¿·¢ÏÖ·´Éä¿ÉÒÔÔÚÐŵÀÀï´óÁ¿±£Áô£¬Õâµ¼Ö³¤ÑÓʱ´Ø£¬ÕâÀïÃæ£¬ÊÇ·´Éä¶ø²»ÊÇÖ±Éä¹â£¬ÔÚÎÞÏߵ粨´«²¥ÖÐÆðÁËÖ÷Òª×÷Óᣠ|

2Â¥2014-04-24 10:53:47
juanlehehe
½ð³æ (ÖøÃûдÊÖ)
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 568.7
- É¢½ð: 504
- ºì»¨: 1
- Ìû×Ó: 1599
- ÔÚÏß: 224.4Сʱ
- ³æºÅ: 2310753
- ×¢²á: 2013-03-01
- רҵ: µç·Óëϵͳ
3Â¥2014-04-24 11:32:24
gdsun
гæ (СÓÐÃûÆø)
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 1022.2
- ºì»¨: 1
- Ìû×Ó: 224
- ÔÚÏß: 85.2Сʱ
- ³æºÅ: 963148
- ×¢²á: 2010-03-06
- ÐÔ±ð: GG
- רҵ: ¼ÆËã»úÍøÂç
4Â¥2014-04-24 12:37:15














»Ø¸´´ËÂ¥