This case study gives an outline of NASA's Space Communication and Navigation Program. It develop a unified space communication and navigation network infrastructure capable of meeting both robotic and human exploration mission needs. Also to Implement a networked communication and navigation infrastructure across space. This network provide the highest data rates feasible for both robotic and human exploration missions on its infrastructure. Assure data communication protocols for Space Exploration missions are internationally interoperable. SCaN provide the end space communication and navigation infrastructure for Lunar and Mars surfaces

1. NASA SPACE
COMMUNICATION & NAVIGATION
Case Study On!
Created By: Mr. Govind Yadav

2. Vision Statement:
To Build And Maintain A Scalable Integrated Mission Support
Infrastructure That Can Readily Evolve To Accommodate New And
Changing Technologies, While Providing Comprehensive, Robust,
Cost Effective And Exponentially Higher Data Rate Space
Communications Services To Enable Nasa's Science, Space
Operations And Exploration Missions.

3. Space Communications and
Navigation (SCaN) Activities:
• Policy And Strategic
Communications - Education And
Outreach, Policy And Navigation
• Scan Services - Networks,
Antennas, Development Projects,
Mission Support And Services
(Mission Commitment, Scheduling)
• Spectrum - Radio Frequency
Assignments, National And
International Collaboration.
• Technology And Engineering -
Demonstrable Projects,
Developmental Projects, Data
Standards And Systems Engineering.

4. SCaN's key mission drivers are:
✓ Develop a unified space communications and
navigation network infrastructure capable of
meeting both robotic and human exploration
mission needs.
✓ Implement a networked communication and
navigation infrastructure across space.
✓ Provide the highest data rates feasible for
both robotic and human exploration missions
on its infrastructure.
✓ Assure data communication protocols for
Space Exploration missions are
internationally interoperable.
✓ Provide the end space communication and
navigation infrastructure for Lunar and Mars
surfaces.
✓ Provide communication and navigation
services to enable Lunar and Mars human
missions.
✓ Continue to meet its commitments to
provide space communications and
navigation services to existing and planned
missions.

5. Near
Earth
Network
Space
Network Deep
Space
Network
NASA SPACE
COMMUNICATION & NAVIGATION

7. NEAR EARTH NETWORK (NEN)
The NEN consists of ground stations owned by NASA,
commercial entities, and other partners that provide
communications and tracking services to missions
operating in the near earth region, including Earth-
orbiting spacecraft.

9. SPACE NETWORK (SN)
The SN provides tracking and data relay for spacecraft,
satellites, and expendable launch vehicles using space
and ground segments. It includes the Tracking and Data
Relay Satellites (TDRS), which uses communications
satellites in geosynchronous orbit to relay data from
spacecraft to fixed ground locations; the satellite relays
provide continuous global coverage of Earth orbits
from equatorial to highly elliptical orbits.

11. The Space Network (SN) was
established in the early 1980s to
replace NASA's worldwide
network of ground tracking
stations.
The Space Network consists of:
➢A constellation of
geosynchronous (Earth orbiting)
satellites named the Tracking
Data Relay Satellite (TDRS)
➢Ground systems that operate as
a relay system between
satellites
➢ Satellites in low Earth orbit
(LEO) above 73 km
➢Ground facilities

12. Deep Space Network (DSN):
The DSN is used to support scientific spacecraft; it provides coverage
from low Earth orbit to the edge of the solar system and beyond.