MIL-PRF-52955D
e. Retain critical GPS data (6.3.5.)
f. Maintain current GPS time.
3.3.14 Survey data storage. IPADS shall retain survey data for a minimum of 360 SCPs for
later recall (3.4.4.3.z), survey adjustment (3.3.6.4), and communication to an external host
(3.4.4.3.dd and 3.4.4.3.ee.) The minimum data set for each SCP shall contain: SCP identifier,
horizontal position, altitude, mark identifier(s), azimuth(s), and any other data required for
survey adjustment.
3.3.15 Information security. IPADS shall not:
a. Permit external devices to access or alter IPADS software or firmware, except for
intentional reprogramming (3.6.8.7.)
b. Permit external devices to interfere with IPADS operation.
c. Permit external devices to access the host system through IPADS.
d. Contain malicious code, viruses, or trap doors.
e. Retain GPS cryptovariables except in a GPS Wing approved SAASM.
f. Permit external access to classified GPS information.
3.3.16 Vehicle-to-vehicle transfer. An operating IPADS shall be transferable from one host
vehicle to another, by a two-person crew, and be ready to continue the mission in the second
vehicle within 10 minutes, without losing information or requiring reinitialization. Installation
hardware and cables may be pre-installed in ground vehicles to meet this requirement.
3.3.17 Visibility. IPADS controls and displays shall be visible under conditions ranging
from full darkness to direct, bright sunlight.
3.3.17.1 Night vision. IPADS shall be operable by personnel wearing night vision goggles.
Night vision of personnel in the vicinity of IPADS shall not be degraded, whether they are
wearing night vision goggles or not.
3.3.17.2 Blackout. IPADS shall be operable under blackout conditions. When operated
under blackout conditions, no part of IPADS shall be visible at distances 10 meters and greater
from the center of the system.
3.4 Interface and Interoperability requirements.
3.4.1 Mechanical interface requirements. When installed in a host vehicle, the IPADS shall
operate without interference with or from normal operation of the host vehicle or vehicle
accessories.
3.4.1.1 Installation. IPADS shall mount in all host vehicles, see 3.4.1.1.1, utilizing
additional interface hardware (installation kit), if required. Interface hardware (installation
kit(s)) shall be provided for host vehicle(s) specified in acquisition documents (6.2). Installation
kits shall contain all hardware items and electrical cables necessary to install and operate IPADS
in the specified host vehicle(s).
3.4.1.1.1 Ground vehicles. IPADS shall interface with the host ground vehicles listed
below. Host vehicle modifications must be approved by the Government (T.) No permanent
modification to the host vehicle is permitted (O.)
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