Abstract: A radio calibration system includes an FPGA that generates a calibration signal by a pseudo noise generator and mixes the calibration signal with a carrier generated by a carrier generator. The FPGA injects the calibration signal into an analog electronic device which couples the calibration signal into a receiver channel. The receiver channel measures calibration signal power, group delay, and phase, and performs calibration based on these measurements. A reference clock synchronizes the pseudo noise generator, the carrier generator and the receiver channel.

Abstract: The disclosed technology includes systems, methods, and mechanism configurations related to satellite solar panels, including stowing arrangements, deployment sequences, special purpose hinges, hold down and release mechanisms, and associated components for controlled deployment of the satellite solar panels.

Abstract: The disclosed technology includes systems, methods, and mechanism configurations related to satellite solar panels, including stowing arrangements, deployment sequences, special purpose hinges, hold down and release mechanisms, and associated components for controlled deployment of the satellite solar panels.

Abstract: Systems and methods are disclosed herein for adaptively coordinating among satellite communication channels.

Abstract: Certain implementations of the disclosed technology may include systems and methods for reducing noise in dual-frequency GNSS signal observation. The method can include: receiving, at a GNSS receiver, a first signal and a second signal. At least the second signal includes noise. The first signal is characterized by a first carrier frequency, and the second signal is characterized by a second carrier frequency. The method includes: down converting, sampling, cross-correlating, accumulating, determining ambiguous instantaneous phases, determining non-ambiguous instantaneous phases, producing normalized non-ambiguous instantaneous first phase samples, constructing a normalized first counter rotation phasor, generating a counter-rotated second observable, applying a low pass filter to remove noise; and outputting the filtered second observable.

Abstract: A cubesat communication system implementing addressable data packet for transmitting information collected by the cubesat to one or more receive-only ground stations. The cubesat may transmit information to the receive-only ground stations according to a scheduler. The receive-only ground stations may receive information from the cubesat without sending any commands to the cubesat to prompt transmission and re-transmit to a central common station using a bent pipe streaming protocol. Information between the cubesat and the ground station may be transmitted via a connectionless, datagram network protocol.

Abstract: Certain implementations of the disclosed technology may include systems and methods for reducing noise in dual-frequency GNSS signal observation. The method can include: receiving, at a GNSS receiver, a first signal and a second signal. At least the second signal includes noise. The first signal is characterized by a first carrier frequency, and the second signal is characterized by a second carrier frequency. The method includes: down converting, sampling, cross-correlating, accumulating, determining ambiguous instantaneous phases, determining non-ambiguous instantaneous phases, producing normalized non-ambiguous instantaneous first phase samples, constructing a normalized first counter rotation phasor, generating a counter-rotated second observable, applying a low pass filter to remove noise; and outputting the filtered second observable.

Abstract: A cubesat communication system implementing addressable data packet for transmitting information collected by the cubesat to one or more receive-only ground stations. The cubesat may transmit information to the receive-only ground stations according to a scheduler. The receive-only ground stations may receive information from the cubesat without sending any commands to the cubesat to prompt transmission and re-transmit to a central common station using a bent pipe streaming protocol. Information between the cubesat and the ground station may be transmitted via a connectionless, datagram network protocol.

Abstract: The disclosed technology includes systems, methods, and mechanism configurations related to satellite solar panels, including stowing arrangements, deployment sequences, special purpose hinges, hold down and release mechanisms, and associated components for controlled deployment of the satellite solar panels.

Abstract: The disclosed technology includes systems, methods, and mechanism configurations related to satellite solar panels, including stowing arrangements, deployment sequences, special purpose hinges, hold down and release mechanisms, and associated components for controlled deployment of the satellite solar panels.

Abstract: The disclosed technology relates to systems and methods for tasking satellite constellations. A method is disclosed herein for receiving, from a resource database of a satellite control system, knowledge data corresponding to a plurality of components associated with a satellite constellation communications system. The plurality of components can include one or more satellites associated with a constellation. The method includes processing the knowledge data according at least one received mission objective. Processing the knowledge data can include determining a status of at least one satellite in the constellation.

Abstract: Systems and methods are disclosed herein for adaptively coordinating among satellite communication channels.

Abstract: The disclosed technology includes systems, methods, and mechanism configurations related to satellite solar panels, including stowing arrangements, deployment sequences, special purpose hinges, hold down and release mechanisms, and associated components for controlled deployment of the satellite solar panels.

Abstract: The disclosed technology relates to systems and methods for tasking satellite constellations. A method is disclosed herein for receiving, from a resource database of a satellite control system, knowledge data corresponding to a plurality of components associated with a satellite constellation communications system. The plurality of components can include one or more satellites associated with a constellation. The method includes processing the knowledge data according at least one received mission objective. Processing the knowledge data can include determining a status of at least one satellite in the constellation.

Abstract: Systems and methods are disclosed herein for adaptively coordinating among satellite communication channels.

Abstract: The disclosed technology relates to systems and methods for determining three-dimensional atmospheric and ionospheric density using refraction of electromagnetic waves. A method is provided for receiving, at a processing system, and from a plurality of Global Navigation Satellite Systems (GNSS) stations, navigation data corresponding to computed positions of the plurality of GNSS stations. The method can further include determining, based at least in part on received navigation data and received GNSS transmitter information, ionosphere and atmosphere refractivity corresponding to intersections of two or more GNSS signals. The method can include calculating, based on the determined 3D density states, data fields of a model representing the three-3D density states. The method can include transmitting position adjustment data to calibrate a navigation position of at least one of the plurality of the GNSS stations based at least in part on the calculated data fields of the model.

Abstract: Methods and systems detect physical locations of vessels. A first satellite includes a first image sensor. A second satellite includes a second image sensor. The processor receives a first image of a target area from the first image sensor, and a second image of the target area from the second image sensor. Both images are taken within a predetermined time frame. The processor performs image recognition to identify a vessel that appears in both the first image and the second image. The processor receives the first satellite's location and orientation when the first image is taken and the second satellite's location and orientation when the second image is taken. Each satellite's location and orientation are determined by the satellite's geographic determination module. The processor determines the vessel's location by performing triangulation based on the first satellite's location and orientation and the second satellite's location and orientation.

Abstract: A constellation of individual satellites are employed to concurrently collect occultation data from multiple GPSS originating signals that pass through atmospheric sections of interest. By coordinating the collection and processing of the data using state of the art receivers on a constellation of low earth orbit satellites and networked processing, highly accurate calculation of atmospheric conditions and related future weather events are possible.

Abstract: Methods and systems detect physical locations of vessels. A first satellite includes a first image sensor. A second satellite includes a second image sensor. The processor receives a first image of a target area from the first image sensor, and a second image of the target area from the second image sensor. Both images are taken within a predetermined time frame. The processor performs image recognition to identify a vessel that appears in both the first image and the second image. The processor receives the first satellite's location and orientation when the first image is taken and the second satellite's location and orientation when the second image is taken. Each satellite's location and orientation are determined by the satellite's geographic determination module. The processor determines the vessel's location by performing triangulation based on the first satellite's location and orientation and the second satellite's location and orientation.

Abstract: A method is provided that can include designating as a control node, a first communication node of a plurality of communication nodes associated with a satellite communications system. The method can include, designating as a listening node, a second communication node of the plurality of communication nodes. The listening node is responsive to instructions provided by the control node. The method includes receiving, at a tuning module, one or more input tuning factors, wherein the one or more input tuning factors can include at least a resource burden factor. Responsive to receiving the one or more input tuning factors, the method includes adjusting by the tuning module, one or more tunable output parameters. The method includes sending, from the control node to the listening node, instructions comprising one or more of the tunable output parameters, and executing the instructions at the listening node.