Harbinger is proof-of-concept prototypes for a York Space Systems′ S-class satellite bus. The demonstration mission features a X-band SAR payload.
The Harbinger mission features York′s S-class platform utilizing the enhanced power subsystem offering up to 3,000 W peak for payload operations, a field-effect
electric propulsion (FEEP) system, and high rate laser communications terminal.
The objective of the Harbinger CRADA is to demonstrate the viability and utility of rapid satellite production techniques, standardized satellite busses, all weather
ultra high-data rate downlinks through dual X-band/laser communications, and all weather/all lighting situational awareness using synthetic aperture radar (SAR).
Currently, Harbinger is scheduled to be launched in fiscal year 2019 as a payload on a Space Test Program (STP) mission.
The Harbinger SAR provides commercial access to timely and reliable Earth observation data and is capable of imaging any location on Earth at regular intervals, day
or night, regardless of cloud cover. SAR is a form of radar that is used to create two-dimensiona images or three-dimensional reconstruction of objects such as landscapes.
SAR uses the motion of the radar antenna over a region of interest to provide finer spatial resolution than conventional beam-scanning radars. SAR is typically mounted
on a moving platform, such as an aircraft or spacecraft, and has its origins in an advanced form of side looking airborne radar (SLAR).