On the request of Nagaland State Disaster management authority, NECTAR (erstwhile MGA) had taken up a project to install 14 Software Defined Radio’s in various districts of Nagaland.
For better communication via voice and data mode, NECTAR completed setting up a radio network interconnecting 14 locations covering all the districts of Nagaland. Through this network, now each district can communicate with each other and also with State Emergency Operation Center (SEOC), Kohima.
It is being used on regular basis for getting daily situation report from all districts. 4.2.2 Meghalaya Police Radio Organization (MPRO) For Communication Modernization and upgradation, MPRO requested NECTAR (erstwhile MGA) to provide reliable and stable communication system covering long distance.
NECTAR has set up a network of HF Radios connecting 14 Police station situated in interior location in various districts of Meghalaya with 1 (one) Central Control Room at Shillong.
Through this network, now each police station can communicate with each other and also with Central Control Room, Shillong.
They are using it on regular basis for daily routine call and passing of important messages among various police stations.
The topography of Arunachal Pradesh is characterized by an undulating hilly terrain, towering hill slopes, enthralling river valleys and imposing peaks. For a very long time the region remained with very poor telecommunication connectivity facility due to its location amidst difficult terrain with impenetrable vegetation.
Therefore, wireless and digital telecommunication facility through SDRs was considered appropriate for the state especially interconnectivity with police stations. NECTAR worked with Government of Arunachal Pradesh to install a fail-safe communication network for the state police department which would work best in the harsh terrain conditions varying from dense jungles to high mountain ranges.
The network comprised 70 static SDRs and 12 mobile SDRs/man packs allowing voice and data transfer with the headquarters as well as between police stations. These radio sets established across the state span from Ziminthang, in the north of Tawang on the Chinese border to Vijaynagar on the Burmese border, a seamless network now exists without any need for repeaters.
A statewide network of e-mail has been established to enable data transfer. Arunachal Pradesh is the first state with this network, which has cutting edge technology, having capacity to communicate through voice, data transfer as well as facilitate transfer of documents and central broadcasts.
Looking at the success of the state-of-the art NECTAR developed communication system installed in various North Eastern states; Sikkim State Disaster Management Authority (SSDMA) placed its request to establish a demonstrator project which can connect two way communications with the HQ of the Authority and District Collector’s offices.
For this project NECTAR conducted the field survey work related to line of Sight, fixing locations of the towers and the required number of SDRs for smooth connectivity. 5 SDRs have been set up for the SDMA, connecting headquarters with/to the District Collectors’ office after building suitable platforms for the installation of high rise towers.
Similar request from Assam State police was received to establish radio communication between various remote districts with Police HQ. Assam Police having a wide area of police network over different types of terrain conditions viz. plane, hilly and mountainous, posed a great challenge to establish a clear line of sight. The state of Assam is extended in large areas divided by Gigantic Brahmaputra river, survey and feasibility of line of sight was done. 30 SDRs have been installed in the state to interconnect police stations with headquarters.
During the flash floods in Srinagar in September 2014, the whole communication network of the state collapsed. Upon request of NDRF (National Disaster Response Force) Srinagar, Jammu & Kashmir, a special team of NECTAR was air lifted and the communication network could be re-established with the installation of 6 SDRs. Within no time, digital data link was established between NDRF main control room at Srinagar and NDRF headquarters at Delhi.
A Software-Defined Radio (SDR) refers to the technology wherein software modules running on a generic hardware platform consisting of DSPs (Digital Signal Processors) and general purpose microprocessors are used to implement radio functions such as generation of transmitted signal (modulation) at transmitter and tuning/detection of received radio signal (demodulation) at receiver.
The topography of Arunachal Pradesh is characterized by an undulating hilly terrain, towering hill slopes, enthralling river valleys and imposing peaks. For a very long time the region remained with very poor telecommunication connectivity facility due to its location in difficult terrain with impenetrable vegetation. Therefore wireless and digital telecommunication facility through SDRs would be possible in the state especially interconnectivity with police stations.
The network of 78 static SDRs and 12 mobile SDRs/man packs for voice and data transfer with the headquarters as well as between police stations without any repeaters has been set up. NECTAR has installed a fail-safe communication network for the State Police Department. 70 police stations are connected through software defined radio (SDR) system, out of which 44 SDR sets are installed in the police stations in eastern and western ranges, while the Central range police stations got the remaining, linking the police stations with the headquarter. In addition to this over 12 radios have been installed in the police vehicles for effective mobile communication.
This network allows voice, data transfer which includes Photograph, PDF, Word, Excel and many other types of file format etc. and broadcast facilities. These sets transfer photographs error free and in case of any error, will automatically re-transfer the packet without error.
There is seamless network connectivity from Zemithang on the Chinese border to Vijay Nagar on the Burmese border around an aerial distance of over 500 km.
Fig: Difficult Terrain Conditions and Police Station of Arunachal Pradesh connected via SDR projects.
Fig. Training of SDR at Zimithang, Arunachal Pradesh
Department of Revenue & Disaster Management, Govt. of Haryana under the scheme NLRMP of Ministry of Rural Development, GOI
8)CRPF, BSF and State Police forces for Internal Security Applications
10)CSIR- Central Road Research Institute(CRRI), New Delhi
आखरी अपडेट : 26-02-2025 - 15:27
