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時間:2022-08-14 來源:本站 點擊:258次
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雷声公司演示陆基版联合精密进近着陆系统(JPALS)******

原标题:雷声公司演示陆基版联合精密进近着陆系统(JPALS)

  [据GPS World网站2019年4月9日报道]雷声公司在亚利桑那州尤马海军陆战队航空站首次向美国空军、海军和海军陆战队演示了陆基远征版联合精密进近和着陆系统(JPALS)。这次概念验证活动表明,目前在各种气候条件下引导F-35B着舰的JPALS系统可以重新配置为机动版本,实现在各种机场条件下着陆。

JPALS是一种应用GPS的差分精密着舰系统,能够在各种气候,以及5级海况条件下引导飞机在航母和两栖攻击舰上着舰。JPALS采用加密抗干扰数据链与机载任务计算机软件、接收机硬件、一组GPS传感器、桅杆天线和舰载航空电子设备相连。

演示期间,F-35B飞行员使用机载JPALS系统与200海里外的远征版地面系统连接,之后,由系统引导飞行员在跑道指定的着陆点着陆。雷声公司情报、信息和服务业务副总裁说:“JPALS可以帮助任何固定翼或旋转翼飞机在全球崎岖、能见度低等恶劣环境的基地着陆。”

与传统的应用雷达引导着陆的系统不同,JPALS不发射雷达信号,从而大大提高了位置安全性。在多山地域和沙漠尘暴等雷达难以工作的条件下确保飞行员的安全。JPALS甚至可以帮助空军飞行员在零可见度和零云底高度条件下着陆。远征陆基版JPALS可以同时控制半径为20海里的多达50架飞机,可应用于应急行动,比如对抗新的威胁或帮助飞机提供人道主义救援,满足美空军在更为简朴、恶劣的基地实施飞行行动的需求。

陆基远征版JPALS系统可分装成五个运输箱,装载于小型运输车辆,由C-130运输,或者悬挂在重型运输直升机下。但系统最终配置可以根据各军种的需求决定。这种机动式陆基JPALS占地面积小,90分钟内即可完成安装投入运行。(中国电科20所 魏艳艳)

Oliveira leads Flamengo rout of Sao Paulo******

SAO PAULO, Nov. 14 (Xinhua) -- Forward Michael Oliveira scored two goals and set up another as reigning champions Flamengo cruised to a 4-0 away win over 10-man Sao Paulo in Brazil's Serie A championship on Sunday.。

Gabriel Barbosa opened the scoring in the first minute, chipping a shot over goalkeeper Hugo Souza following a sequence of one-touch passes involving Andres Pereira and Bruno Henrique.。

The latter doubled the visitors' lead three minutes later by tapping in from close range after Oliveira's mazy run and cross from the left flank.。

The hosts were reduced to 10 men in the 10th minute when Argentine striker Jonathan Calleri was shown a straight red card for scything down David Luiz with a studs-up challenge.。

Oliveira curled a 25-yard drive into the far corner just before halftime and struck again with a close-range finish in the 55th minute.。

The result leaves Flamengo second in the 20-team standings with 60 points from 31 matches, eight points behind leaders Atletico Mineiro, with both teams having seven games remaining. Sao Paulo are 15th, just two points clear of the relegation zone.。

In other Brazilian Serie A fixtures on Sunday, Fluminense won 2-1 at home to Palmeiras, Juventude prevailed 2-0 at Chapecoense and Ceara secured a 2-1 home win over Sport Recife. Enditem。

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Economic Watch: China's logistics industry embraces greener, smarter era******

BEIJING, Nov. 3 (Xinhua) -- In the face of multiple challenges including the COVID-19 pandemic and climate change, a lower-carbon and smarter logistics industry is emerging in China.。

Liang Dalin, 48, has bid farewell to the traditional energy- and time-consuming workstyle thanks to a mobile app. He now no longer needs to waste time searching for goods and waiting for distribution.。

"The app helps me locate the goods easily. I don't need to drive around looking for them anymore," said Liang, a transport truck driver.。

The app is developed by Full Truck Alliance, also known as Manbang that runs a domestic freight service platform. Using big data, the company helps truck drivers find goods quickly and reduces empty-load rates and fuel consumption, cutting carbon emissions by an estimated 330,000 tonnes in 2020.。

"The global supply chain and logistics industry are facing unprecedented challenges due to deglobalization and other risks," said Hu Yadong, president of the China Communications and Transportation Association.。

China's logistics industry ranked first in the world in freight volume, turnover rate and express delivery volume in 2020, said Wang Jianjun, director of the economic and trade department of the National Development and Reform Commission.。

Wang added that the country's logistics industry has maintained a sound momentum of development in recent years, with low overall costs and growth in transportation volume.。

Xu Yahua, chief engineer with the Ministry of Transport, said developing green logistics is of great significance to the sustainable development of the economy and society since the industry is a major player of energy consumption and carbon emission.。

The application of digitalization and other technologies to road transportation can effectively improve the efficiency of the transportation system, and help reduce vehicle energy consumption and carbon emissions, according to a research jointly conducted by the ministry and Manbang.。

The research results showed that 69.51 million tonnes of carbon dioxide emissions can be reduced each year if the empty-load rate is lowered to 25 percent from 45 percent.。

According to data from China's leading logistics companies, their investment in smart equipment exceeded 15 billion yuan (about 2.34 billion U.S. dollars) in 2020, and more than 370 intelligent distribution hubs have been built across the country. Artificial intelligence, big data and other cutting-edge technologies are widely applied to transportation, warehousing and packaging.。

The total size of China's intelligent transportation market increased from 42 billion yuan in 2011 to 165.8 billion yuan in 2020, with an annual growth rate of around 20 percent, showed statistics released by China Intelligent Transportation Systems Association.。

"It is necessary to promote transformation and upgrading of the logistics industry with digital innovations, so as to boost high-quality economic development," Xu said. Enditem。

华商记者帮******

  李先生反映:

  2021年10月20日,我开始在雁翔路一个公交枢纽站内餐厅上班,负责炒菜,上班到12月27日后,因疫情不再去上班,至今餐厅欠我1389元工资未结。

  记者帮忙:

  2月18日上午,华商全媒体记者联系到李先生,李先生今年28岁,西安人,“2021年10月20日,我应聘到西北妇幼北边雁翔路公交枢纽站内餐厅上班,负责炒菜,一个月工资5000元,每个月15号发上个月的工资。”李先生说,“干到12月27号时,因为疫情,餐厅负责人让我们先回家,疫情结束后紧接着就是春节假期,春节过后,2月16日负责人打电话,我们沟通后确定我不用继续去上班了。但是12月的工资,还有1389元没有结算完,春节前和春节期间负责人先后支付了1000元、2000元。”

  李先生说,因为12月没有干满,12月的工资是按照上班天数计算的,他向餐厅负责人要剩下的1389元工资,但对方拒绝支付。“与我一样情况的,还有两位女同事,她们是帮厨,分别被拖欠工资2400元、3400元。”

  随后,华商全媒体记者联系到该餐厅总公司西安瞪羚生态餐饮文化有限公司负责人王先生,反映了此事。

  处理结果:

  西安瞪羚生态餐饮文化有限公司负责人王先生表示会尽快安排相应部门解决此事,2月18日下午,该公司王姓工会主席回复,李先生上班的餐厅为自负盈亏经营模式,但西安瞪羚生态餐饮文化有限公司有监管责任,2月19日,他将去这一餐厅网点专门处理此事,与网点负责人沟通,核实员工所反映的工资拖欠问题,并会尽快解决,决不拖欠员工工资。

  华商全媒体记者 任婷



来源:华商网-华商报

编辑:方正

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