Leica GS18 T扩展了可以使用GNSS的站点

案例分析

日本的BM Field与Leica GS18 T进行调查

2019年,日本北海道的一家测量公司BM Field Co.,Ltd。将GNSS RTK ROVER(Leica GS18 T)添加到其测量工具包中,此后就在各种各样的网站上使用了它。这包括灌溉运河,荒野区域,甚至是滑坡地点。在这些站点上的工作更容易,因为GS18 T用倾斜的杆精确测量,消除了需要高浓度和额外时间的水平工作。GS18 T提高了工作效率,降低成本并在更具挑战性的条件下实现了GNSS调查。

GNSS增强的虚拟参考站测量

BM Field由Tomokazu Aoyama领导,总部位于日本萨波罗(Sapporo),是一家私人测量公司,在挑战性条件下完成调查而闻名。他们的客户正在建立和测量与北海道地区政府机构合作的公司。

"We've been involved in many agricultural surveys to gain an understanding of field areas and create land improvement plans. We’ve also conducted disaster prevention surveys to understand landslides and create recovery plans. And so we’ve gained a reputation as an experienced company capable of handling work in forests and on steep and rocky hillsides,” says Aoyama.

Leica GS18 T BM场在森林中进行测量
在具有挑战性的条件下进行测量

BM Field uses Leica Geosystems equipment to help make this challenging work possible. Even before he set up his own business in 2008, Aoyama was using Leica Geosystems’ products.

“与市场上的其他测量工具相比,它们是班上最耐用的仪器。从那时起,由于其稳健性和可靠性,我继续使用Leica Geosystems的产品。bob综合app下载即使是现在,我们的乐器一直在雨中潮湿,但是Leica Geosystems的产品却耸了耸肩,”他笑着说。bob综合app下载

Aoyama在2015年购买了Leica Viva GS08 Plus,作为该公司的第一个GNSS系统。GS08 Plus接收来自多个卫星源的信号,包括GLONASS和GPS,并且很少被树枝或公用极线阻止信号。

Before this purchase, the company did some GPS-based VRS and RTK surveys but had difficulties depending on location and time of day to get reception from the relevant type of satellite. Thinking that multiple satellite systems would expand the range of sites where surveying could be applied, Aoyama invested in a new GNSS system.

他说:“引言时,影响是直接的。”“它极大地提高了我们的现场工作效率。”

在灌溉调查中,倾斜测量消除了250个梯子上升

在2019年的贸易展览会上,Aoyama被介绍给Leica GS18 tGNSS RTK ROVER。GS18 T中的“ T”代表倾斜,指其倾斜补偿。

Aoyama说:“在听到它可以通过倾斜的杆子进行准确测量,而无需校准,并且它不受磁干扰的影响,我强烈认为这就是我们所需要的。”“而且我正要为它做一个完美的项目。”

该项目是对高度超过1米的农业灌溉管的调查。

没有GS18 T,测量师将需要爬入运河并为每次测量的杆平整。由于他们无法在灌溉运河的底部行走,因此测量下一个点意味着使用GNSS系统爬上梯子,然后再次回到下一个位置。

5公里长的灌溉运河以20米的间隔进行了调查 - 重复此方法,他们将不得不上下爬上250次,这将非常艰难。

“当我尝试GS18 T时,我留下了深刻的印象。它可以使用倾斜的杆进行测量,因此无需爬上运河墙,也无需担心气泡。另外,在开始工作之前,无需进行麻烦的校准。因此,我们能够在惊人的短时间内完成现场工作,但结果相同。” Aoyama解释说。

The company has taken measurements in locations that defeated conventional equipment, such as places where visibility is limited and in large areas of wilderness. Aoyama feels that with the addition of Galileo, the analytical capabilities of the system have clearly improved.

Aoyama继续将Leica Geosystems GNSS Technologies添加到其公司的测量工具箱中。在2020年,BM Field获得了Leica Viva GS16GNSS smart antenna and have now a system that makes RTK surveying possible with a small number of personnel.

Aoyama解释说:“如果没有Internet连接,则不能在现场使用VR,但是使用RTK,您不必担心Internet连接。如果将GS16安装在可欣赏天空并用作基站的位置中,则可以将GS18 T置于较厚的灌木丛中,并且仍然使用实时校正进行良好的调查。”

RTK的另一个优点是它可以节省通信成本。目前,该公司正在使用RTK进行80%至90%的GNSS调查项目。

"By combining VRS and RTK, we've significantly expanded the range of applications for GNSS antennas," says Aoyama.

测量长期长大的荒野和其他具有挑战性的网站

让我们看一下GS18 T增强BM Field的测量功能的另外两个示例。

在第一个项目中,BM Field负责绘制一个田地的斜率细节,以制定场外排水的施工计划。

"The site was a large agricultural field. I walked across it taking measurements at 20-metre intervals, and because there were no trees or utility poles to block the signal, the capabilities of GNSS were immediately apparent,” says Aoyama.

第二个项目是预防灾难调查。在建造固定围栏以提供加固并防止滑坡之前,有必要了解该区域的当前状况。在灾难恢复的测量中,必须澄清要维护的正常区域与已崩溃的区域之间的边界。因此,GS18 T的倾斜补偿非常有用。

“在大约15米高的陡坡上,有许多旧地球围栏的长堆,但是上层栅栏衰老,对角线倾斜。脚下的条件是如此糟糕,以至于我无法用倾斜的乐器衡量,这项工作将是不可能的。” Aoyama说。

BMFIELD CASTIVATE
使用高极(左)和现场软件的屏幕Leica Captivate(右)测量

Expanding survey and post-survey possibilities with GNSS

目前,对于地形调查(包括路线调查),Aoyama优先考虑GS18 T,并在GNSS不符合需求的地方使用总站。

“这完全取决于网站上的情况。例如,对于Aoyama县的Cedar森林,有一起高大的树木靠近,我们无法使用GNSS。因此,对于该项目,我创建了一些参考点,然后使用总站进行了测量。” Aoyama解释说。

但是,Aoyama建议在可见度较差的位置,必须在绕道而行的位置,以及不方便地引入重型设备的位置。

Aoyama建议:“对于说GNSS不能因为树木而无法使用的人,我建议他们尝试RTK。”“当然,如果该站点需要毫米精度,我将选择一个总站,但是如果精确度为1-2厘米就足够了,我会毫不犹豫地选择GNSS。”

Survey后办公室工作也很简单。

调查网站的GS18 T和控制器利用3D现场软件Leica Captivate在里面Leica CS20controller. After returning from the field,Leica InfinityOffice软件用于将测量数据导入PC。然后,在测量CAD系统上创建了计划视图和垂直/水平横截面视图。

“当您使用迷人的现场时,这很方便,因为您不断地意识到杆的准确位置和倾斜度,” Aoyama反映。“由于太阳标记和颜色显示功能,屏幕上的3D查看器也很容易阅读。”

Aoyama particularly likes the navigation function that indicates the next stakeout point on the screen with an arrow. Walking in the indicated direction brings you easily to the measurement point. This function is visually and intuitively easy to use and is especially helpful when moving crosswise.

此外,无穷小鬼roved data analysis and saved time from potential rework for BM Field.

Aoyama说:“ Infinity提供的自由度和适应能力比其他公司的软件更高。在数据分析中是一些反复试验的范围。实际上,由于这种灵活性,有时我们避免了重做站点测量值。”

更快的现场工作和降低成本提高了竞争力

引入GS18 T为BM领域带来了一些好处,扩大了可以使用GNS的站点的范围,并提高了现场工作效率

As the GS18 T can be combined with the GS16 to perform RTK, it is now possible to conduct GNSS surveys at sites with adverse conditions, including lack of internet connectivity. Additionally, data can be received from a broader range of positioning satellites. This, together with the improvement of data analysis, has enhanced the capabilities.

By using GNSS extensively, BM Field has also increased the range of sites where measurements can be taken with a very small number of personnel, leading to a reduction in costs. Similarly, since it is no longer necessary to keep the pole vertical, far fewer person-hours are required for on-site work.

BMFIELD 2D
通过测量10公顷荒野创建的计划观点

“在GS18 T的产品引入中,它说'工作生产率提高了20%。但是增加远高于此。例如,一个否则将在10天内完成的项目,我们现在可以完成两倍或三倍的工作。” Aoyama说。

这也带来了增加的利润,并将BM领域与竞争对手区分开来。

BM Field is well regarded by its customers for efficiently implementing both VRS and RTK and their knowledge of implementing GNSS in difficult conditions. This has increased work orders from nationwide construction consultancies in Aomori, Iwate and other areas outside Hokkaido.

当他的下一步行动时,Aoyama正在考虑GNSS接收天线Leica GS18 i,使用视觉定位技术。

“I'm always hoping that I'll be able to do more GNSS surveying in adverse conditions that I currently have to give up on. One solution would be the capability to use images to measure point coordinates,” says Aoyama with optimism.

Aoyama对Leica Geosystems GNSS测量技术的未来发展的期望很高,包括BM Field使用这些技术来掌握新的测量挑战的潜力。
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