印度科学家们对国产GPS系统非常兴奋

来源：龙腾网

http://www.ltaaa.com/wtfy/4514.html

印度科学家们对国产GPS系统非常兴奋

作者:木凌枫 发布日期:2012-05-21 浏览:7167
译文简介:
终结印度依赖美国控制的GPS的第一步，组成印度区域导航卫星系统（IRNSS）七颗卫星中的第一颗将在2012年12月发射。印度航天航空调查局的科学家们发言。
译文来源:
原创翻译:龙腾网 http://www.ltaaa.com 翻译:木凌枫 转载请注明出处
本贴论坛地址:http://www.ltaaa.com/bbs/thread-58530-1-1.html
http://www.indiandefence.com/forums/indian-strategic-forces/18162-scientists-excited-about-india%92s-own-gps.html[/url]
正文翻译:


原创翻译:龙腾网 http://www.ltaaa.com 翻译:木凌枫 转载请注明出处

本贴论坛地址:[url]http://www.ltaaa.com/bbs/thread-58530-1-1.html

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2012-5-21 16:50 上传

IRNSS.jpg

In the first step towards ending India’s dependence on the US-controlled Global Positioning System (GPS), the first of seven satellites that will form the Indian Regional Navigation Satellite System, or IRNSS, is expected to be launched by December 2012, Indian Space Research Organisation (ISRO) scientists have said.

终结印度依赖美国控制的GPS的第一步，组成印度区域导航卫星系统（IRNSS）七颗卫星中的第一颗将在2012年12月发射。印度航天航空调查局的科学家们发言。

The IRNSS will be composed of seven geostationary satellites to watch over the country from 36,000 km above the earth’s surface—two satellites each would be positioned in the north and south, with three in the middle, according to Pradeep V Khekale, a senior scientist with ISRO’s Space Applications Centre (SAC) in Ahmedabad. Khekale is the programme manager for GAGAN, or GPS-aided Geo Augmented Navigation, a system that improves GPS accuracy for users in India, and is involved in developing the applications for IRNSS.

IRNSS系统将由七颗地球同步卫星组成，在离地球表面36，000千米高空处监控全国----南北两端分别放置两颗，中间放置三颗。航天航空调查局太空应用中心的高级科学家Pradeep V Khekale说。

Currently, only the United States and Russia have functional independent satellite-based navigation systems, although China has recently launched two satellites for its own system. “The first satellite launch is expected within a year, and all seven satellites for IRNSS are expected to be launched within three years,” said Chirag Dewan, a senior scientist at SAC.

现在，只有美国和俄罗斯拥有实用性独立卫星导航系统，即使中国最近发射两颗北斗导航卫星。“第一颗卫星有望年内发射，而且IRNSS系统的全部七颗卫星将在3年内发射完成，”太空应用中心的高级科学家Chirag Dewan如是说。

The payloads for the IRNSS would weigh approximately 2,000 kilograms, and would need Geosynchronous Satellite Launch Vehicles, or GSLVs, to launch them. Khekale added that the two-frequency INRSS would be more accurate than the single frequency GPS.

IRNSS系统的火箭有效载荷大约重量为2吨，并且需要地球同步卫星运载火箭（GSLV）才能发射。Khekale还说双频的INRSS系统比单频的GPS系统更加精准。

“IRNSS is generating a lot of interest, excitement and focus at the SAC now, especially after the successful launch of the RISAT-1 just a few weeks ago,” said Shailendra Singh, a Radio Frequency engineer at SAC who was part of the RISAT mission, the payload for which was developed here.

“IRNSS系统得到了太空应用中心的兴趣和关注，特别是在几个星期前RISAT-1成功发射之后，”参加太空中心RISAT项目的无线电频率工程师Shailendra Singh发表言论说，此项目中火箭负荷得到了改进。来源：龙腾网

http://www.ltaaa.com/wtfy/4514.html

印度科学家们对国产GPS系统非常兴奋

作者:木凌枫 发布日期:2012-05-21 浏览:7167
译文简介:
终结印度依赖美国控制的GPS的第一步，组成印度区域导航卫星系统（IRNSS）七颗卫星中的第一颗将在2012年12月发射。印度航天航空调查局的科学家们发言。
译文来源:
原创翻译:龙腾网 http://www.ltaaa.com 翻译:木凌枫 转载请注明出处
本贴论坛地址:http://www.ltaaa.com/bbs/thread-58530-1-1.html
http://www.indiandefence.com/forums/indian-strategic-forces/18162-scientists-excited-about-india%92s-own-gps.html[/url]
正文翻译:


原创翻译:龙腾网 http://www.ltaaa.com 翻译:木凌枫 转载请注明出处

本贴论坛地址:[url]http://www.ltaaa.com/bbs/thread-58530-1-1.html

200403wo3ay4ckzooyvaou.jpg (31.75 KB, 下载次数: 7)

下载附件 保存到相册

2012-5-21 16:50 上传

IRNSS.jpg

In the first step towards ending India’s dependence on the US-controlled Global Positioning System (GPS), the first of seven satellites that will form the Indian Regional Navigation Satellite System, or IRNSS, is expected to be launched by December 2012, Indian Space Research Organisation (ISRO) scientists have said.

终结印度依赖美国控制的GPS的第一步，组成印度区域导航卫星系统（IRNSS）七颗卫星中的第一颗将在2012年12月发射。印度航天航空调查局的科学家们发言。

The IRNSS will be composed of seven geostationary satellites to watch over the country from 36,000 km above the earth’s surface—two satellites each would be positioned in the north and south, with three in the middle, according to Pradeep V Khekale, a senior scientist with ISRO’s Space Applications Centre (SAC) in Ahmedabad. Khekale is the programme manager for GAGAN, or GPS-aided Geo Augmented Navigation, a system that improves GPS accuracy for users in India, and is involved in developing the applications for IRNSS.

IRNSS系统将由七颗地球同步卫星组成，在离地球表面36，000千米高空处监控全国----南北两端分别放置两颗，中间放置三颗。航天航空调查局太空应用中心的高级科学家Pradeep V Khekale说。

Currently, only the United States and Russia have functional independent satellite-based navigation systems, although China has recently launched two satellites for its own system. “The first satellite launch is expected within a year, and all seven satellites for IRNSS are expected to be launched within three years,” said Chirag Dewan, a senior scientist at SAC.

现在，只有美国和俄罗斯拥有实用性独立卫星导航系统，即使中国最近发射两颗北斗导航卫星。“第一颗卫星有望年内发射，而且IRNSS系统的全部七颗卫星将在3年内发射完成，”太空应用中心的高级科学家Chirag Dewan如是说。

The payloads for the IRNSS would weigh approximately 2,000 kilograms, and would need Geosynchronous Satellite Launch Vehicles, or GSLVs, to launch them. Khekale added that the two-frequency INRSS would be more accurate than the single frequency GPS.

IRNSS系统的火箭有效载荷大约重量为2吨，并且需要地球同步卫星运载火箭（GSLV）才能发射。Khekale还说双频的INRSS系统比单频的GPS系统更加精准。

“IRNSS is generating a lot of interest, excitement and focus at the SAC now, especially after the successful launch of the RISAT-1 just a few weeks ago,” said Shailendra Singh, a Radio Frequency engineer at SAC who was part of the RISAT mission, the payload for which was developed here.

“IRNSS系统得到了太空应用中心的兴趣和关注，特别是在几个星期前RISAT-1成功发射之后，”参加太空中心RISAT项目的无线电频率工程师Shailendra Singh发表言论说，此项目中火箭负荷得到了改进。