NOSS-2 (Naval Ocean Surveillance System), which is likely not the official designation, is the second generation of NOSS satellites.
These satellites carry equipment to track ships and aircraft via their radio transmissions. Positions of the origin of the transmissions are determined by triangulation. Each launch consists of three satellites of similar size in the same orbit. All three satellites maneuver to stationkeep relative to one another.
In contrast to the earlier NOSS, the satellites are much more massive, indicated by the large Titan-4A launch vehicle. The satellites were deployed by the TLD (Titan Launch Dispenser) propulsion module, which also had a secondary communications mission.
| Nation: | USA |
|---|---|
| Type / Application: | Ocean Surveillance, ELINT |
| Operator: | NRO, US Navy |
| Contractors: | Lockheed, Martin Marietta |
| Equipment: | ? |
| Configuration: | ? |
| Propulsion: | ? |
| Power: | |
| Lifetime: | |
| Mass: | |
| Orbit: |
| Satellite | COSPAR | Date | LS | Launch Vehicle | Remarks | |
|---|---|---|---|---|---|---|
| Intruder 1A (NOSS-2 1A, USA 60) | 1990-050B | 08.06.1990 | CC LC-41 | Titan-4(05)A | with SLDCOM 1, Intruder 1B, Intruder 1C | |
| Intruder 1B (NOSS-2 1B, USA 61) | 1990-050C | 08.06.1990 | CC LC-41 | Titan-4(05)A | with SLDCOM 1, Intruder 1A, Intruder 1C | |
| Intruder 1C (NOSS-2 1C, USA 62) | 1990-050D | 08.06.1990 | CC LC-41 | Titan-4(05)A | with SLDCOM 1, Intruder 1A, Intruder 1B | |
| Intruder 2A (NOSS-2 2A, USA 74) | 1991-076C | 08.11.1991 | Va SLC-4E | Titan-4(03)A | with SLDCOM 2, Intruder 2B, Intruder 2C | |
| Intruder 2B (NOSS-2 2B, USA 76) | 1991-076D | 08.11.1991 | Va SLC-4E | Titan-4(03)A | with SLDCOM 2, Intruder 2A, Intruder 2C | |
| Intruder 2C (NOSS-2 2C, USA 77) | 1991-076E | 08.11.1991 | Va SLC-4E | Titan-4(03)A | with SLDCOM 2, Intruder 2A, Intruder 2B | |
| Intruder 3A (NOSS-2 3A) | 1993-F02 | 02.08.1993 | Va SLC-4E | F | Titan-4(03)A | with SLDCOM 3, Intruder 3B, Intruder 3C |
| Intruder 3B (NOSS-2 3B) | 1993-F02 | 02.08.1993 | Va SLC-4E | F | Titan-4(03)A | with SLDCOM 3, Intruder 3A, Intruder 3C |
| Intruder 3C (NOSS-2 3C) | 1993-F02 | 02.08.1993 | Va SLC-4E | F | Titan-4(03)A | with SLDCOM 3, Intruder 3A, Intruder 3B |
| Intruder 4A (NOSS-2 4A, USA 119) | 1996-029A | 12.05.1996 | Va SLC-4E | Titan-4(03)A | with SLDCOM 4, Intruder 4B, Intruder 4C, TiPS 1a, TiPS 1b | |
| Intruder 4B (NOSS-2 4B, USA 120) | 1996-029B | 12.05.1996 | Va SLC-4E | Titan-4(03)A | with SLDCOM 4, Intruder 4A, Intruder 4C, TiPS 1a, TiPS 1b | |
| Intruder 4C (NOSS-2 4C, USA 121) | 1996-029C | 12.05.1996 | Va SLC-4E | Titan-4(03)A | with SLDCOM 4, Intruder 4A, Intruder 4B, TiPS 1a, TiPS 1b |
