Shore-to-ship two-way communication system, boat-to-ground bidirectional intercom system with 10-15 Mbps ethernet

Shore-to-ship two-way communication system is to set up a wireless high-speed video network communication system on shore and on the boat. It is used to meet the needs of Internet access, 视频监控, and voice communication in the area about 6 至 10 kilometers offshore.

Although our TX900 supports a range of 15 公里, the height of the transmitting antenna and the receiving antenna is very close to the sea level. Because there are waves in the sea, these will interfere with the wireless transmission system. If possible, the transmitter and receiver’s antenna must be placed as high as possible.

常问问题

Boat wireless video transmitter demand

Q: I’m searching for an option to send 4 pieces of 1080HD live stream videos over wireless without the internet. It must be a smooth picture and I will install it on a boat. Boat to boat so it will be moving and I must be able to be 360 degrees around. 你有什么建议吗?

一个: 如果 4 IP cameras are on the same ship, we can connect them to the same transmitter through the network cable and a network switch. Their 4 cameras will have 4 IP addresses and share a network transmitter.

Our two-way broadband network transmission equipment based on the IP interface supports a maximum rate of 30 megabits per second. Just make sure there is a line of sight between the transmitter and receiver antennas to provide smooth video quality.

We use omnidirectional antennas for both transmitters and receivers, so even if the ship turns around or rotates 360 度, it is best to install the antenna on the top of the ship so that the video signal will not be interrupted without obstruction.

Our network broadband transceivers are designed for use by drones or large fixed-wing aircraft. Their speeds can reach more than 800 公里每小时, so there is no problem for our transceivers to be used on ships.

You need to tell us what is the maximum distance between these two ships.
Knowing the distance between the two ships, you need to consider the waves between the ships, which may block the transmission between the antennas, so the antenna should be installed at the highest point of the ship as much as possible.

Q: Good morning are you able to provide a quote to supply a wireless video transmitter system, 我们操作一艘挖泥船，希望将视频从海岸传输到挖泥船，最大距离为 5 公里. It is in a marine environment so it would need to be robust and also run on 12 伏特没有互联网连接.

Before introducing a specific model, our engineer has some questions below.

• 1. Do you need a one-way or two-way transmission system? 单程, means just transferring the video from the shore to the dredge. 双向, means sending and getting the video or data from one side to another side.
• 2. Is the camera on the shore or dredge? and the receiver is on the shore or the dredge. We need to consider the special case of the transmitter or receiver.
• 3. There are often undulating waves in the ocean. How high can the transmitting antenna and receiving antenna be installed?

客户: Apologies for the late reply, Please be aware that there is no internet connection available on the dredge.

• 1 – We would need a one-way with the camera transferring from shore to the dredge
• 2 – The camera would be on the shore at the end of the discharge pipe and the receiver and monitor would be on the dredge so can see what is happening on shore.
• 3 – We have attached a pdf with some pictures which show the ‘set up’. There is a mast located onshore as well.

好, 单程, HDMI camera on the shore, the receiver on the dredge, transmission distance is 5km, 发射机, and receiver will be installed a special case, (防水, 防震, 防盐雾), 同 3 pcs 1.8-meter length fiberglass antenna. (one for the transmitter, two for the receivers)

We recommended the below model, COFDM-908T-5W

30Km 远距离 COFDM HDMI 无线视频发射器接收器全套音频视频 TX RX 适用于无人机 1080P 908T

查看更多

Here is the test video for 10W at 20km.

We used the COFDM(DVB-T) 技术, which is similar to digital tv technology, with no need to use the internet. (The camera and transmitter are like a tv company transmitting tower, and the receiver is like a tv box at home)

For the maritime wireless communication environment, deploying MESH nodes on the shore base and ships can quickly establish a multi-hop broadband wireless network with high mobility, 抗干扰, and beyond-line-of-sight transmission, providing voice, 数据, and video between the shore base and the ship. Multimedia integrated transmission service.

The wireless private network is connected to the customs command center, and the supervised ships are connected to the shore-based base station wirelessly.

Supports real-time dynamic networking of ship formations at sea, frequency hopping anti-jamming capabilities greatly enhance the electromagnetic countermeasures of formations at sea, and self-healing properties ensure that the wireless network has tenacious vitality, and any node failure in the network will not affect the entire formation The operation of the network can be an “unbeatable maritime mobile network”.

Quickly build a self-organizing network without a center, fast and flexible networking between boarding law enforcement officers and ships, multi-hop automatic networking, fast self-healing, adapt to various complex maritime environments, and support multi-channel high-definition video.

manet IP mesh radio for long-range audio video 20km nlos, for internet sharing with the mesh radio link, internet sharing between sea and office.

关于 10 ships and just internet connection only place or install in the ship. We have our own internet dedicated provider, not from a cellular operator, so we want all ships that are nearby the seaports to have access to the internet. For bandwidth between 64kbps-1M bps, everyone can connect to the internet via wifi.

Default Frequencies 1400-1460MHz (350MHz-4GHz customizable)
Channel Bandwidth 2M/5M/10M/20MHz/40MHz
RF Channel 2T2R
Output Power 43dBm (2x10W)
无线上网 (可选的) 2.4G WIFI (2x100mw)
Modulation Type: BPSK/QPSK/16-QAM/64-QAM/DSSS/CCK
Data Rate Up to 82Mbps
Network Capability 9 hops and no less than 64 节点
加密 AES
RF Interface N F x2
PTT Interface (可选的) LEMO 7-pin
4G (可选的) Micro SIM x1 Electrical Characteristics

20W high RF power output

Range up to 20 3 0公里视距

支持 100 240V AC wide voltage

High bandwidth up to 82Mbps

Supports AES encryption

Supports HDMI input /output and LAN

With dual antennas MIMO

最多支持 64 nodes MESH network

Full IP duplex transparent data transmission

Flexible networking and rapid deployment

2U rack mount design

With rugged aviation aluminum housing

Marine wireless video transmitter transmission

工作频率: 1.4千兆赫
信道带宽: 2.5兆赫 (上行链路), 10兆赫 (下行链路)
最大发射能量: 33dBm的
调制: OFDM
星座: BPSK, QPSK, 16QAM
前向纠错码: 低密度脂蛋白 (1/2, 2/3, 3/4, 5/6)
双工模式: 时分双工
上行吞吐量: 300kbps的 (串行端口 + 网口 + 遥控)
下行吞吐量: 2Mbps~8Mbps
视频接口: 以太网端口, 串行端口, PPM/系统总线
加密: AES128/256
尺寸: 150X100X54mm
重量: 1159G
工作电压: 6V~16V
工作温度: -20℃~60℃
Interface options: 以太网端口, 串行端口
传输距离: 5公里

优点

Support point-to-point (时分双工) and point-to-multipoint applications (TDMA)
Excellent ground-to-ground transmission performance
Stable high-speed mobile communication performance
Reliable downlink in-band information transmission channel
ARQ retransmission and adaptive frequency hopping
低延迟
AES 加密
Customized for unmanned ships
Water cooling
ip65 waterproof
Image data control three in one
5KM long-distance wireless transmission

20km 海上 HDMI 无线视频发射器和接收器测试，适用于船或从岸到船

关于无线视频发射器和接收器的常见问题

1. 您的无线视频发射器有哪些类型的视频输入端口?

我们的无线视频发射器有这些类型的视频输入接口: HDMI 1080P 和 4K HDMI, CVBS复合材料, SDI, AHD, IP以太网, BNC, 或告诉我们您需要什么类型, 我们的工程师将根据您的需求进行修改.

2. 你的无线图传支持的传输距离是多少?

我们的传输距离可以通过增加功率放大器来调整. 现在, 主要的是 15千米, 30千米, 50千米, 80千米, 100千米 , 和 150 公里, 这取决于客户的需求.

当然, 上面列出的传输距离都在 LOS 视线范围. 如果发射器和接收器之间有障碍物, NLOS (非视线), 传输距离大大缩短, 只有1公里或2公里, 取决于中间障碍物的数量和当地的无线环境.

3. 什么是单向或双向? 单工与半双工, 全双工

单程 方法, 我们只能从无线视频发射器向接收器单向传输和下载视频或数据, 我们无法将视频或数据从接收器上传到发射器. 这种类型也称为单纯形.

双向 意思是, 我们不仅可以将视频或数据从无线发射器下载到接收器, 但我们也可以将视频或数据从接收器上传到发射器. 这个非常适合操作无人机. 不仅可以看到无人机传来的实时视频, 也可以上传控制无人机的指令或者控制云台摄像机调整角度的指令到发射器. 这可以同时操作. 这种类型也称为半双工或全双工.

请在以下链接中查看详细信息. HTTPS://ivcan.com/request-a-quote-of-wireless-video-transmission/#simplex

4. 你的HDMI视频发射器是否支持加密和接收器解密?

大多数无线视频发射器现在支持 AES128 或 AES256 位加密和解密, 取决于您选择的型号. 请联系我们进行验证.

5. 普通用户收货后可以修改无线图传的频率吗?

无线视频发射器和无线视频接收器的频率 可以修改. 用户需另外购买参数配置板.

然而, 考虑到货物发出时相应的功放和天线已经固定在一定范围内. 如果用户调整发射机的频率, 相应的 功率放大器, 发射天线和接收天线也应修改为相同频率, 这些用户需要做好准备. 如果不, 会导致无线视频发射器的频率与天线的频率不同, 使接待困难. 所以请务必在下单前告知您需要的正确频率.

如果是为了安全或保密, 你可以 使用加密和解密 发射器和接收器的功能, 这可以确保您的视频传输是私密的. .

6. 我看到您的模型与我的需求非常相似, 但我需要修改其中一个参数, 那可能吗?

是, 我们所有的产品 参数可定制 根据客户的需要. 如果您有特殊要求, 请通过下面的链接告诉我们.

HTTPS://ivcan.com/request-a-quote-of-wireless-video-transmission/

7. 无线视频接收器信号弱怎么办?

1. 更改接收器的位置 避免来自强磁场环境的潜在局部干扰.
2. 确保天线在 发射器和接收器都是垂直的.
3. 请将发射器和接收器的天线抬高到 保持一定的高度差.
4. 请环顾四周以确保 发射器和接收器之间没有障碍物.
5. 改变方向 接收天线的.
6. 如果它不起作用, 尝试 将接收器移动到靠近发射器的位置 看是否超过有效无线传输距离.
7. 或者考虑 添加发送的中继 发射器和接收器之间.
8. 天线应尽可能远离地面, 因为地面会吸收传输的信号.

8. 我可以只购买发射器和放大器的模块吗? 我想将它们组装到我的设备中.

我们可以, 当然, 供应 无线视频发射器 模块和功率放大器.

对于第一个样品测试, 我建议您购买整套产品，因为我们的工程师已经优化了参数以达到最佳性能.

完成测试验证后, 您可以卸下外壳或散热器, 将其安装在您的设备中, 并不断调整参数以达到最佳性能. 在将来, 您将只能购买您需要的模块或附件.

9. 你能在发货前拍一个测试视频给我看吗?

当然, 我们也了解无线视频传输发射器和接收器非常昂贵. 你离中国工厂很远. 并希望您收到的货物适合最佳性能.

如果您特别注意特定的参数或功能, 我们可以根据您想看到的功能拍摄一些测试视频, 请随时与我们联系. 未经您的同意，不会直接发货给您.

10. 如何测试无线视频发射器和接收器的延迟?

测试无线视频发射器和接收器的延迟, 我们需要做两个测试.

首先是测试摄像头到显示器的延迟.

第二个是相机, 加上显示器加上无线图传发射器和接收器的延迟.

两次测试结果相减就是无线视频发射端和接收端的真实延迟.