ένα εδάφιο rover non los 2-way επικοινωνία για το Ground Rover

Εδώ είναι η απαίτηση ενός πελάτη.

I have a ground rover which needs 2km non los communication. I need the whole system (excluding the camera). The range or the type of obstacle is not quite clear in the video. Let me clarify my requirements.
Obstacle type: Let’s say between my rover and base station there is a building with 2500 sq meters space in between. I don’t need fire proofing on my antenna(if there’s any). For my system, I need omni antennas able to send control data and receive both data and a video stream. The range should be at least 1.2km. 2km is recommended.

From the customer’s needs, we can understand that he needs a two-way video data transmission system for the ground rover. Customers need to receive the video transmitted from the ground rover through the receiver, and also need to be able to send data through the remote control to control the ground rover 1 προς την 2 χιλιόμετρα μακριά.

This is a typical solution that requires a ground two-way transmission system. Μας Vcan1935 is used for ground fire prevention robots. Μας TX900 two-way transmission system can be used for point-to-point or relay solutions, and there is also 1806 using IP mesh, which is suitable for solutions with more than 3~4 nodes.

The most difficult thing to achieve among the customer’s requirements is the obstacles in the middle, because the customer also mentioned that his obstacles are unknown, which may be buildings, εργοστάσια, woods or hills.

To solve the problem of effective transmission of the two-way transmission system in the presence of obstacles, it is necessary to consider whether the transmission can be achieved through the reflection of the wireless signal. Αν όχι, it is necessary to consider adding a relay node at the highest point of the obstacle, or forwarding to a place where the transmitter and receiver can have line of sight.

Because the ground transmission distance is 1 προς την 2 χιλιόμετρα, we also need to consider that the earth is round and there is a problem of the earth’s curvature blocking the signal. Επομένως, it is also necessary to recommend that users put the antennas at both ends of the transmitter and receiver as high as possible.

If the customer’s transmitter and receiver are both dynamically moving, it will be difficult to set up a relay node on an obstacle. The recommended solution is to fly a drone in the air as a relay node, or consider adding a mobile node in a certain area in the middle, such as installing a node on a car, to relay the signal from the receiver to the transmitter.

If you have similar needs, please tell us your specific needs and we can provide a perfect solution based on your needs.

Για ένα ground rover requiring Non-Line-of-Sight (NLOS) 2-way communication, you need a robust, χαμηλής καθυστέρησης, υψηλή αξιοπιστία wireless link that can handle obstacles such as buildings, έδαφος, and foliage.

Βασικές απαιτήσεις & Technologies:

1. COFDM (Κωδικοποιημένη Ορθογώνια Πολυπλεξία Διαίρεσης Συχνότητας)
   • Best for αστικός, δασωμένος, or indoor environments.
   • Works well with reflections and multipath interference.
   • Can penetrate obstacles better than traditional point-to-point links.
2. MESH Networks (Mobile Ad-Hoc Networks – Μίσος)
   • Αυτοίαση, multi-node networking for moving rovers.
   • Used in military and robotics applications.
   • Εταιρείες σαν Persistent Systems, DTC (Domo Tactical), and Silvus Technologies offer robust solutions.
3. Ραδιόφωνο καθορισμένο από το λογισμικό (SDR) with Frequency Hopping
   • Customizable frequencies and encryption.
   • Works in Ζώνη L (1-2 GHz), Ζώνη S (2-4 GHz), Ζώνη C (4-8 GHz), or UHF (300-900 MHz) for deep penetration.
4. 4G/5G or Private LTE (If infrastructure is available)
   • Παρέχει χαμηλής καθυστέρησης, μεγάλης εμβέλειας συνδεσιμότητα.
   • Works well in urban areas with LTE coverage.
5. Δορυφόρος (SATCOM) Σύνδεσμος (For Extreme NLOS & Long-Range Needs)
   • Suitable for remote operations where ground-based RF isn’t reliable.

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Recommended Communication Systems for a Ground Rover:

Τεχνολογία	Πλεονεκτήματα	Κατά τα βοηθήματα	Example Systems
COFDM Radio	Great for NLOS, χαμηλό latency	Requires specific radio hardware	DTC, Vislink, Haivision
MESH Networks (Μίσος)	Works in dynamic environments, αυτοθεραπεία	Shorter range per node	Silvus StreamCaster, Persistent Systems MPU5
SDR with FHSS	Custom frequencies, high security	Requires SDR expertise	Ettus USRP, DTC SDR
Private LTE/5G	υψηλού εύρους ζώνης, χαμηλό latency	Needs LTE infrastructure	Nokia Private LTE, Cradlepoint
Δορυφόρος (SATCOM)	Works anywhere	High cost, high latency	Starlink, Inmarsat, Iridium

Best Setup for Your Rover:

• Σύντομο έως μεσαίο εύρος (1-10 km, Urban/Rural):
  • COFDM radio (DTC, Vislink) ή ΠΛΕΓΜΑ (Silvus, Persistent Systems).
• Μεγάλος βαθμός (10-50 km, Remote Areas):
  • Πλέγμα MANET + Κεραίες υψηλής απολαβής ή Custom SDR with Frequency Hopping.
• Extreme NLOS (Beyond 50 km, No Ground Network):
  • Hybrid SATCOM + COFDM Backup.