LightSquared and its proposed network’s potential effect on federal science activities will be the focus of a full hearing of the House committee on science and technology on Thursday.

Hearing witnesses will include officials from the Transportation Department, National Oceanic and Atmospheric Administration and National Aeronautics and Space Administration.

Jeffrey J. Carlisle, executive vice president on regulatory policy and public affairs for the company, is also on the roster to speak. The company is seeking approval to build its network, which members of the GPS community say will interfere with important navigation and other satellite signals.

On Tuesday, LightSquared announced that it had signed yet another partnership — its 13th — to expand its network. The Reston-based company will partner with Advanta Technologies, a Houston-based data, voice and video company. It is a multiyear, wholesale agreement.

Related stories:

Grassley to FCC on LightSquared: What are you hiding?

GPS industry responds to LightSquared letter

LightSquared, Sprint strike partnership, but questions loom