Joint Terminal Control Training and Rehearsal System



U.S. Air Force


The JTC-TRS is a shrink-wrapped communication and aural cue product designed for Joint Terminal Attack Controller (JTAC), Close Air Support (CAS), Call-for-Fire (CFF), and similar training systems. This targeted product uses ASTi's industry-proven, commercial off-the-shelf (COTS) equipment and software to meet or exceed the JTC-TRS training device’s specific requirements. Additional ASTi software for the JTC TRS program creates a cost-effective, plug-and-play solution minimizing program risk.

U.S. Air Force photo/Maj. Geoff Legler

Challenges &

The challenge requirements are listed in blue, ASTi's applicable components are in black:

Realistic Audio

The system should provide realistic, directional audio inside the training facility and dome for environmental surroundings and synthetic entities.

ASTi's Earshot 3D, a sound field reconstruction product, monitors the DIS network and automatically provides a 360-degree soundscape of the virtual battle space. To provide realistic timing, Earshot 3D estimates the distance between the listener and the sound, causing a delay based on listener position. Customers can also modify facility speaker locations from anywhere on the network using a standard web browser.

Terrain Effects

The environmental audio should be altered/degraded based upon the terrain features of the trainee's surroundings within the simulation.

ASTi used Modern Air Combat Environment (MACE) terrain data to calculate and apply audio effects appropriately based on the operator's location and surrounding terrain. The result is an immersive and accurate sound environment.

Advanced Radio Skins

The program required updates to existing simulated radio interfaces inside the Voisus client.

ASTi offers custom GUI options for a variety of training scenarios. For the JTC-TRS program, ASTi added GPS time, date, and location features to its existing PRC-152 handheld radio on-screen interface. ASTi also developed a new interface for PRC-148 radios. These updates enhanced the program’s training and operational requirements, providing the radios’ look and functionality at a fraction of the cost.

Information Assurance (IA) compliance

Maintain ongoing compliance with stringent DoD cybersecurity certification and accreditation processes, such as DIACAP ATO and RMF.

The customer subscribed to ASTi’s IA maintenance program to receive periodic software-hardening packages that are easy to install, thus relieving their technical staff of difficult, time-consuming IA chores. ASTi’s current generation server products are based on Red Hat® Enterprise Linux®, the most certified operating system (OS) available today. The IA program is an ideal security solution for customers who require even more rigorous IA controls, conformance to DoD standards, and OS patch management throughout the product’s lifetime.

Components Deployed

Voisus Client

Advanced Radio Skins

Voisus realistically simulates combat radios and models the effects of over-the-air ranging as well as crypto and frequency hopping modes. Voisus features graphical, interactive radio faceplates (i.e., skins) running on touchscreen tablets and provides a high-value user interface solution for JTAC trainees. ASTi also includes hardware interfaces that support actual JTAC trainee tactical headsets.

Earshot 3D

The Earshot 3D sound product automatically generates an immersive, 360-degree soundscape of the virtual battle space.