To further enhance coastal defense informatization and strengthen surveillance of border areas, the project will deploy UDATEK wireless bridge base-station coverage systems along the coastal defense zones of Hainan to provide high-definition video transmission and wireless coverage. The solution must satisfy the demand for long-range, high-bandwidth, real-time wireless backhaul of front-end HD video. The wireless bridge network is required to deliver long-distance, high-bandwidth, high-stability and smooth performance, with the entire network operating over wireless links.

Solution Design Principles

1.1 Scientific Approach

System design must be grounded in scientific principles to ensure overall security, reliability, and stability. It should integrate mainstream technologies with the specific operational requirements of government maritime surveillance, forming a rational and technically sound solution.

1.2 Practicality

The system must address real-world operational needs. Technologies selected should be both advanced and mature. Through in-depth analysis of local IT infrastructure and user workflows, the system should deliver highly applicable and effective functionalities for maritime defense.

1.3 Systematic Design

A systems engineering methodology should guide the entire design process, following a structured approach of problem identification, analysis, and resolution. Subsystems must be logically organized, functionally complementary, and free from redundancy or overlap.

1.4 Standardization

National and industry standards should be prioritized, with active exploration of international and advanced foreign standards. The system must be adaptable to evolving standards and capable of integrating future technological advancements.

1.5 Forward-Looking Design

While meeting current demands, the system should anticipate future technological trends. It should remain open to emerging technologies and scalable for future upgrades and enhancements.

1.6 Scalability

The architecture must support seamless expansion, including the addition of surveillance points. Wireless base stations should be designed with sufficient bandwidth and 360-degree coverage to accommodate future growth.

1.7 Stability

Core system components must demonstrate high stability and resilience under harsh environmental conditions (e.g., extreme weather, electromagnetic interference), ensuring continuous and reliable operation.

1.8 High Bandwidth and Long-Range Transmission

Wireless bridging equipment must support high-bandwidth, long-distance transmission to enable real-time, high-definition video streaming, meeting the stringent requirements of maritime surveillance applications.

Solution

2.1 Overall Solution Overview

The Coastal Defense Monitoring Center integrates a Video Processing Unit to decode and analyze multi-channel IP video streams, which are visualized on a high-resolution LCD Video Wall. All devices are interconnected via a Core Network Switch, while authorized operators access live and recorded footage through a secure Video Client Software. The entire system is centrally managed by a Network Management Platform (NMS), ensuring real-time monitoring, fault detection, and configuration of the Core Network infrastructure.

This solution employs the UDATEK wireless-bridge base-station system to establish a high-bandwidth microwave footprint along the coastal-defense line, enabling real-time HD video backhaul from every front-end site. Video streams travel by cable from each camera to a terminal bridge; the terminal bridge then relays the traffic over a 5 GHz microwave link to the base station. The base station hands the streams off via optical fiber directly to the local police substation, and they are forwarded through the carrier transport network to the core platform at the Haikou Coastal-Defense Command Center. Inside the core platform, the core switch multicasts the streams to video-client workstations for operational use while simultaneously feeding a decoder that drives an LCD video wall, delivering a single-pane-of-glass view of the entire coast.

2.2 System Structure Scheme Design

This project covers a coastal-defense area where 59 HD surveillance sites have been planned. Field surveys show that several existing carrier towers can be reused, providing line-of-sight paths of up to 10 km—sufficient for the microwave link budget.

Base-Station Layer

Following the “carrier tower first, high rooftop second” rule, with 18 m self-supporting poles as a fallback. Each site is equipped with six CPE8500-MBS77 base-bridge units, each fitted with a 65° dual-polar, high-gain sector antenna; the six panels together deliver full 360° seamless coverage.

Edge/Terminal Layer

Every camera is paired with one CPE8500-SBS55/11 CPE bridge (built-in high-gain antenna) and connected via Cat-6 cable. A 5 GHz microwave link carries 1080 p/4 K video to the nearest base station in real time. Cameras are sited on hilltops or ≥6 m poles that integrate the bridge, camera, power box and solar array, guaranteeing clear line-of-sight.

Relay Layer

Where terrain blocks LOS, a single “relay hop” is added—two  CPE8500-SBS55/11 CPE bridges on the same mast, cabled together, one facing the camera and the other the base station, providing transparent relay.

Backhaul Layer

Each base station hands traffic to the local police substation and the Haikou Coastal-Defense Command Center through dedicated carrier fiber, ensuring ample bandwidth and low latency. City-, county- and town-level public-security offices can access any video stream simply by establishing a fiber or VPN connection to the central data center, achieving unified video sharing across “one network”.

2.3 Advantages of System Structure Scheme Design

All bridges operate in the licence-free 5.8 GHz band (5.1–5.9 GHz), offering more than 20 non-overlapping channels that eliminate co-channel interference and leave ample spectrum for future large-scale expansion.

Built on a flagship 4×4 MIMO chipset, the link delivers up to 867 Mbps air-interface throughput, guaranteeing ≥6 Mbps per video stream so that 1080 p/4K images reach the control room in real time, stutter-free.

The die-cast aluminium enclosure is IP68-rated, UV-stabilised and salt-spray certified, with integrated 6 kV surge and ±15 kV ESD protection. It runs 24/7 in –40 °C to +75 °C, 17-level typhoon winds and 95 % humidity without degradation; advanced OFDM and FEC algorithms suppress multipath fading and electromagnetic interference.

Power options cover AC 220 V, DC 12 V/24 V/48 V and solar hybrid inputs, fitting grid, battery or renewable scenarios. Where line-of-sight is obstructed, a single “relay hop” restores a clear path, keeping the entire chain highly reliable.

3.4 System Structure Diagram