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--- l2_comm [2019/03/17 11:46] – alberto
+++ l2_comm [2023/09/06 11:21] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
 =======Communication Links============
-Level 2 and level 3 will be linked to the operator via a Ubiquity Rocket SHF Radio device initially. VHF radio, Iridium and 4G modem is also planned. Within the line of sight, the Rocket M5 SHF radio has a bandwidth of 150 Mbps. This will allow the remote operator to send and receive data and control instructions to the USV. The broadband connection will also be able to handle data streams from AUVs linked via the USV. However, that functionality is not yet developed. A very high frequency (VHF) radio transponder will be able to receive and transmit data beyond line of sight, but with a lower data bandwidth than the SHF radio. The VHF radio has not yet been integrated into the system. The Level 2 system will also feature iridium communication, but it will only be used in areas where other options are unfeasible due to the cost.
+Level 2 and Level 3 are linked to the operator via 4G modem and Iridium. This will allow the remote operator to send and receive data and control instructions to the USV. The broadband connection will also be able to handle data streams from AUVs linked via the USV.
-{{:l1-comm.png?1000|}}
 The command and control software Neptus is used to provide the human operators with a coherent visual interface for mission planning, control and data review and analysis. IMC is used as the main communication interface. The Inter-Module Communication (IMC) is a message-oriented protocol developed and designed by LSTS for communication between heterogeneous vehicles, sensors, and human operators (see photo below).\\
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 {{:l2-lsts.png?600|}}
-;#;
-========== Ubiquiti Rocket M2 ==========
-The Rocket is a rugged, hi-power, very linear 2x2 MIMO radio with enhanced receiver performance. It features incredible range performance (50+km) and breakthrough speed (150+Mbps real TCPI/IP). The device was specifically designed for outdoor PtP bridging and PTMP Airmax base-station applications.
-;#;
-{{:rocket.png?200|}}
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 {{:mikrotik_modem2.png?400|}}
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+\\
+\\
+========RockBLOCK+ Iridium========
+| {{ :rockblock.pdf |RockBlock+}}      | RockBlock+ Brochure.|
+| https://www.rock7.com/products-rockblock-plus      | RockBlock+ Webpage.|
+The RockBLOCK device is IP68 rated and hosts an Iridium 9602 unit, an antenna and a voltage regulator. The 9602 unit is interfaced with RS-232 using AT commands. Depending on the conditions, the unit can send or receive a message approximately every 40 seconds. The cost is 0.1 to 0.05 GBP per 50-byte message, depending on the bundle that is bought. In addition, there is a 10 GBP line rental per month. The system has a limited bandwidth and is therefore only suitable for simple control monitoring or tracking applications. The maximum package sizes are 340 bytes for sending and 270 bytes for receiving. Although the latency is typically a few seconds, it may be as much as a minute or more.
+{{:iridium1.png?400|}} {{:iridium1_table.png?400|}}