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We are solution provider co. to Police and Law enforcement agencies in Pakistan. Currently one of our client required Mobile command and control Centre
1). They want to connect 4 HD PTZ cameras and 2 handheld HD movie cameras with the vehicle wireless network for live coverage and recording.
2). 1 Drone HD Camera also they wanted to connect with the vehicle.
3). They also required same video stream to another ground station simultaneously.
4). Requirement of Hotline with command and control vehicle to ground station.
Kindly suggest the wireless equipment (Tx/Rx) which should have the range in between 20Km NLOS.
Requirement Analysis
This customer needs a mobile command and control vehicle solution capable of transmitting multiple HD video feeds (from PTZ, handheld, and drone cameras) を超えて 20km non-line-of-sight (NLOS) 距離. さらに, the system must support:
- Simultaneous transmission of live video to a secondary ground station.
- Two-way voice communication (hotline) between command vehicle and ground control.
- High stability and low latency for real-time operations.
これらの要件を考慮すると、, the best approach involves a combination of COFDM wireless video transmission そして IP Mesh networking radios.
Recommended Wireless Solution
1. COFDM Wireless Video Transmission System (20Km NLOS)
- 周波数範囲: 280–300MHz or 1.4GHz band (for better NLOS penetration)
- 変調: COFDM (QPSK/16QAM)
- ビデオフォーマット: WIFI-TV400-WIFI-ISDB-T-DVB-T2-ATSC-Digital-TV-box.jpg, 1080P60
- 潜在: ≤250ms end-to-end
- 暗号化: AES-128/256 for secure law enforcement operation
- インターフェイス: HDMI/SDI/AV input for PTZ and handheld cameras
- 範囲: Up to 20Km NLOS (with 10–15W power amplifier and high-gain antenna)
- 応用: Vehicle-mounted receiver station with DVR and 4-channel video recording
2. IP Mesh Networking Radio (for Drone + Ground Link)
- Supports IP video and data transmission between drone, 車両, and base station
- Self-forming, self-healing mesh allows simultaneous uplink and downlink
- Up to 80Mbps throughput
- 周波数: 1.4GHzの / 2.4GHzの / 5.8GHz configurable
- Supports RC control and video in one link
- Extended range up to 20Km using high-gain directional antennas
3. Hotline Communication Link
- 統合された VOIP over IP Mesh 若しくは dedicated narrowband digital radio (UHF/VHF) for hotline
- 許可します real-time command communication between field team and command vehicle
System Features
- Real-time HD video from multiple sources (車両, handheld, ドローン)
- Multi-point transmission (vehicle ↔ ground station ↔ command center)
- 低レイテンシー, high reliability in complex urban or rural NLOS conditions
- Secure encrypted transmission for police and law enforcement use
- Modular system—can expand to add more cameras or relay nodes
- Easy integration with existing monitoring software or NVR systems
アプリケーション
- Mobile Command and Control Vehicles
- Police and Law Enforcement Operations
- Disaster Management & Rescue
- Border Surveillance and Military Field Units
- Public Event and Riot Control Coverage
- UAV/Drone Real-time Monitoring
よくある質問
Q1: What is the main advantage of using COFDM for this application?
A1: COFDM offers robust NLOS performance and stable video transmission even in urban or moving environments.
Q2: Can the same video feed be viewed at multiple locations?
A2: はい. The COFDM receiver can be connected to a rebroadcast link or IP Mesh network to send streams to multiple ground stations simultaneously.
Q3: What frequency range is recommended for 20Km NLOS operation?
A3: 280–300MHz or 1.4GHz bands are ideal due to their superior penetration and lower signal loss.
Q4: Can voice communication be integrated into the same system?
A4: はい, using IP-based voice (VOIP) or digital UHF radios as a hotline between the command center and ground station.
Q5: Is the system suitable for both stationary and moving vehicles?
A5: 絶対に. COFDM technology is designed for mobile use, ensuring reliable links even while in motion.
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