| 13 | | The Orbit grid as illustrated in Figure 2 consists of a multiply interconnected, 20-by-20 grid of '''ORBIT Radio Nodes''', some non-grid nodes to control R/F spectrum measurements and interference sources, and front-end, application and back-end servers. These servers support various ORBIT services. |
| 14 | | |
| 15 | | [[Image(hardware-50.png)]] |
| 16 | | [[BR]]Figure 2. ORBIT Hardware. |
| 17 | | |
| 18 | | Each '''ORBIT Radio Node''' is a PC with a 1 GHz VIA C3 processor, 512 MB of RAM, 20 GB of local disk, two 100BaseT Ethernet ports, two 802.11 a/b/g cards and a Chassis Manager to control the node, see Figure 3. The Chassis Manager has a 10BaseT Ethernet port. The two 100BaseT Ethernet ports are for Data and Control. The Data ports are available to the experimenter. The Control port is used to load and control the ORBIT node and collect measurements. |
| 19 | | |
| 20 | | [[Image(node-50.png)]] |
| 21 | | [[BR]]Figure 3. Orbit node. |
| 22 | | |
| 23 | | [[BR]] |
| 24 | | == 2. Software components == |
| 25 | | |
| 26 | | [[BR]] |
