ISRO Second generation Distress Alert Transmitter

Source-This post is based on the article “ISRO develops second generation Distress Alert Transmitter” published in “The Hindu” on 18th January  2024.

Why in the News?

ISRO Second generation Distress Alert Transmitter, Recently the Indian Space Research Organisation (ISRO) has developed an improvised distress alert transmitter (DAT-SG) with advanced capabilities for fishermen at sea to send emergency messages from boats.

What is Distress alert transmitter (DAT)?

Specifications	Details
About	It is a device used for sending emergency messages from fishing boats.
Developed by	ISRO
First Version	Operational since 2010
Latest Version	Second generation DAT (DAT-SG)
Functions	1. Conventionally, using DAT, messages are transmitted via a communication satellite to the Indian Mission Control Centre, where alert signals are decoded for the fishing boat’s identity and location. 2. The information is then relayed to maritime rescue coordination centers (MRCCs) of the Indian Coast Guard, which coordinates search and rescue operations for distressed fishermen.
DAT-SG with additional features	1. Real-Time Acknowledgments- Besides sending distress signals, the DAT-SG has the facility to send back acknowledgement to the fishermen who activate the distress alert from sea. This will provide them with assurance that help is on the way. 2. Two-way communication– In addition to sending distress signals, it can also receive messages from control centers. It will help in providing advance warnings about adverse weather, cyclones, tsunamis, or emergencies. 3. Potential Fishing Zones (PFZs) updates- DAT-SG transmits regular updates on Potential Fishing Zones (PFZs) to fishermen, aiding them in maximizing catches and saving time and fuel. 4. Bluetooth connectivity- It can connect to mobile phones via Bluetooth, allowing messages to be read in the native language through a dedicated app.

Note- The central control center (INMCC) utilizes the web-based network management system ‘SAGARMITRA‘ to keep a database of registered DAT-SGs. This aids MRCCs in accessing immediate information about distressed boats, allowing the Indian Coast Guard to carry out swift Search & Rescue operations.

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