Orbcomm

Orbcomm provides global monitoring, tracking, messaging, and industrial Internet of Things (IoT) services using a low-Earth orbit (LEO) satellite constellation. The original Orbcomm system employed first-generation satellites operating at an altitude of approximately 775 km and an inclination of about 45–48°. At launch, the 104 kg satellites were approximately 1.04 m in diameter and 0.16 m long, resembling a disc mounted on a pole. When deployed, two circular solar-array vanes expanded to form a structure approximately 2.2 m across. Each satellite carried three transponders supporting low-data-rate machine-to-machine communications, tracking, and messaging services.

The satellites relay messages to Ground Earth Stations (GES) distributed worldwide, which forward traffic to Ground Control Centers (GCCs) for delivery via terrestrial communications networks. The system operates primarily in the VHF band, using approximately 148–149.9 MHz for satellite reception and 137–138 MHz together with 400.05–400.15 MHz for transmission. User data rates are typically up to 2.4 kbps, with many applications operating at only a few hundred bits per second.

Orbcomm statistically relays approximately 90% of messages within six minutes, although message delivery times can occasionally exceed 15 minutes because of satellite visibility gaps. Typical data payloads range from 6 to 30 bytes, making the system well suited to GPS position reports, equipment status updates, utility metering, environmental monitoring, and other low-volume telemetry applications.

Between 2014 and 2015, Orbcomm deployed its second-generation OG2 constellation, significantly improving network capacity, coverage, and reliability. The OG2 satellites are also equipped with Automatic Identification System (AIS) receivers that detect VHF transmissions from AIS-equipped vessels. Orbcomm combines satellite AIS data with terrestrial AIS feeds to provide global maritime domain awareness, vessel tracking, logistics monitoring, and navigational support services for government and commercial customers worldwide. While ORBCOMM is best known historically for low-data-rate satellite messaging, space-based AIS has become a major component of its maritime services business.

As of 2025, Orbcomm serves more than 2.4 million connected devices across its global industrial IoT and satellite communications network. Its principal applications include transportation and logistics management, maritime tracking, heavy equipment monitoring, cold-chain management, utility monitoring, and remote asset tracking.