Abstract: A multiple target tracker and beam steerer utilizes a MEMs MMA for beam steering to simultaneously illuminate multiple tracked targets per frame. The MMA can be adaptively segmented to change the number of output beams, and the power in a given beam, based on a list of tracked targets, range to targets, threat level etc. The MMA can be adaptively configured to simultaneously perform one or more Designation, Range Finding and Active Imaging modes on the same or different tracked targets. The MMA can be segmented so that each segment includes a plurality of mirrors to “oversample” the input beam. The mirrors in a given segment may be controlled to provide wavefront correction to the corresponding output beam.

Abstract: A method, comprising: receiving a first data set that is generated by satellite-based instrumentation; processing the first data set to detect an earth event and one or more characteristics of the earth event; and identifying a follow-up action based on the one or more characteristics and executing the follow-up action, wherein the event includes one or more of a weather event, an earth event, or a space event.

Abstract: Systems and methods are provided for updating data in a computer network. An exemplary method includes: scanning to capture a first set of signals; identifying from the first set of received signals a second set of signals having on times longer than a specified minimum dwell time; providing a plurality of signal profiles associated with a plurality of pulsed patterns of a signal of interest; identifying from the second set of signals a third set of signals that match at least one of the signal profiles; receiving demodulated data regarding the third set of signals; obtaining characteristic information for each of the third set of signals; verifying for each of the third set of signals their relevant information; determining whether the verification of the third set of signals produced a match; and upon determining of the match, providing an indication of a signal of interest.

Abstract: Methods and apparatus for a mounting structure including a first arm having a first stiffness and a second arm having a second stiffness, wherein the first stiffness is less than the second stiffness in at least one degree of freedom. The first arm includes a flex region that can deflect in response to loading. In embodiments, the mounting structure can movably secure an antenna array to a pedestal.

Abstract: A storage system for sensor data includes a plurality of storage modules coupled together via a network fabric, each storage module including a plurality of form factor non-volatile memory (NVMe) storage units. The system also includes an integrated processor coupled to the network fabric and storage modules. The integrated processor is configured for control functions and data processing. The integrated processor configuration includes instructions such that the plurality of storage devices receive data via a data centric publish subscribe (DCPS) notification followed by a remote direct memory access (RDMA) transfer.

Abstract: A method includes fabricating a mirror system that includes a dual axis gimbal, a mirror, and a mirror substrate that are formed together as an integral component using an additive manufacturing process. The method also includes forming multiple first gaps in the mirror system using a subtractive manufacturing process, where the first gaps extend through the mirror system in a first direction. The method further includes forming multiple second gaps in the mirror system using the subtractive manufacturing process, where the second gaps extend through the mirror system in a second direction perpendicular to the first direction. The first gaps and the second gaps separate the gimbal into a top portion and a bottom portion.

Abstract: System and method for generating Pulse Position Modulated (PPM) lidar waveforms generating Pulse Position Modulated (PPM) waveforms in a lidar includes: a) creating a modulation pool, based on a maximum nominal pulse repetition frequency (PRF); b) eliminating bad modulation levels from the modulation pool to generate a good modulation pool; c) selecting a modulation level from the good modulation pool to generate a PPM code element; d) repeating steps b and c N times to generate an N-element PPM code, wherein the PPM code is PRF independent; e) selecting a PRF less than the maximum nominal PRF; f) generating a PPM waveform by applying the N-element PPM code to the selected PRF; and g) transmitting the PPM waveform by the lidar toward a target to determine a range to the target.

Abstract: A method is disclosed comprising: transmitting a pair of tracking signals, the pair of tracking signals including a first tracking signal and a second tracking signal; receiving a data set that is collected by using a sensor in a sensor array, the data set including: (i) a received first tracking signal that is generated by the sensor in response to receiving the first tracking signal, (ii) a received second tracking signal that is generated by the sensor in response to receiving the second tracking signal, and (iii) a received target signal; detecting a relative delay at which the first tracking signal and the second tracking signal are received by the sensor; removing the received first tracking signal and the received second tracking signal from the data set to produce a filtered data set; and providing the filtered data set and an indication of the relative delay to a beamformer.

Abstract: Described herein is an apparatus and a method for a low-profile, circularly polarized antenna. The antenna comprises a first substrate having a first side and a second side; an antenna element on the first side of the first substrate; a first conductor on the second side of the first substrate proximity coupled to the antenna element; a second conductor on the second side of the first substrate proximity coupled to the antenna element and ±90 degrees out of phase with the first conductor; a second substrate under the first substrate having a least one air gap therein under the antenna element; a third substrate under the second substrate having a first side and a second side; and an electrical ground plane on the second side of the third substrate.

Abstract: Disclosed is a microwave cavity resonator used as a phase change (phase modulation) to intensity change (intensity or amplitude modulation) converter. Certain aspects and embodiments include resonant circuits, such as a resistor, inductor and capacitor (RLC) circuit. Certain aspects and embodiments convert changes in phase to changes in output voltage to perform analog demodulation of a phase modulated microwave carrier. Certain aspects and embodiments use resonance when the reactive components of the circuit (capacitive and inductive components) are equal in magnitude and 180 degrees out of phase with one another, thereby cancelling out the reactance component of the circuit’s impedance.

Abstract: Systems, devices, methods, and computer-readable media for evaluation and visualization of machine learning data drift. A method can include receiving a series of data indicating accuracy and confidence associated with classification of respective batches of input samples, and dynamically displaying, on the GUI, a concurrent plot of the accuracy and confidence as the series of data are received.

Abstract: An IQ mixer is used in a Pound-stabilized microwave source to detect amplitude modulation of the signal reflected from the reference resonator. By properly configuring the IQ mixer so that the LO and RF inputs are maintained in quadrature at the Q mixer, hence in-phase at the I mixer, lower levels of amplitude modulation may be detected at lower modulation frequencies compatible with optimal choices of resonator coupling and maximal phase to amplitude conversion.

Abstract: A system simulates hyperspectral imaging data or multispectral imaging data for a simulated sensor. Blackbody radiance of real-world thermal imagery data is computed using a Planck function, which generates a simulated spectral hypercube. Spectral emissivity data for background materials are multiplied by a per-pixel weighting function, which generates weighted spectral emissivity data. The simulated spectral hypercube is multiplied by the weighted spectral emissivity data, which generates background data in the simulated spectral hypercube. Simulated targets are inserted the background data using the Planck function. The simulated spectral hypercube is modified, and then it is used to estimate a mission measure of effectiveness of the simulated sensor.

Abstract: An apparatus includes a photonic integrated circuit having a first lenslet array and a first antenna element array forming a first pupil of the photonic integrated circuit and a second lenslet array and a second antenna element array forming a second pupil of the photonic integrated circuit, where the second pupil has a different size than the first pupil. The photonic integrated circuit also has a waveguide layer positioned between the first and second pupils, where the waveguide layer includes multiple waveguides configured to guide optical signals between antenna elements of the first antenna element array and antenna elements of the second antenna element array.

Abstract: An IQ mixer is used in a Pound-stabilized microwave source to detect amplitude modulation of the signal reflected from the reference resonator. By properly configuring the IQ mixer so that the LO and RF inputs are maintained in quadrature at the Q mixer, hence in-phase at the I mixer, lower levels of amplitude modulation may be detected at lower modulation frequencies compatible with optimal choices of resonator coupling and maximal phase to amplitude conversion. With the Q mixer held in quadrature it acts as a broadband phase noise detector. A portion of the Q mixer output is bandpass filtered and summed with the I mixer Pound-server voltage to achieve both center frequency stabilization and broadband phase noise suppression.

Abstract: Techniques for multi-domain systems integration and evaluation are disclosed, including: obtaining criteria associated with a strategic objective; determining that a first system, operating in a first operating domain, is only partially capable of satisfying a first criterion in the criteria; determining that a second system, operating in a second operating domain that is different from the first operating domain, is capable of augmenting the first system with respect to satisfying the first criterion; responsive to determining that the second system is capable of augmenting the first system with respect to satisfying the first criterion, modeling a multi-domain system including at least a first component from the first system and at least a second component from the second system; and generating a performance metric that objectively evaluates capabilities of the multi-domain system against the criteria associated with the strategic objective.

Abstract: A method includes using a first trained artificial intelligence/machine learning (AI/ML) model to identify occupied frequency channels associated with one or more incoming signals during multiple time periods, where the one or more incoming signals include a frequency-hopping spread spectrum (FHSS) signal. The method also includes generating one or more baseband signals using portions of the one or more incoming signals associated with the occupied frequency channels. The method further includes using a second trained AI/ML model to recover data from the one or more baseband signals, where the recovered data represents at least a portion of data that is encoded in the FHSS signal.

Abstract: In one aspect, a method includes forming an electrical path between p-type mercury cadmium telluride and a metal layer. The forming of the electrical path includes depositing a layer of polycrystalline p-type silicon directly on to the p-type mercury cadmium telluride and forming the metal layer on the layer of polycrystalline p-type silicon. In another aspect, an apparatus includes an electrical path. The electrical path includes a p-type mercury cadmium telluride layer, a polycrystalline p-type silicon layer in direct contact with the p-type mercury cadmium telluride layer, a metal silicide in direct contact with the polycrystalline p-type silicon layer, and an electrically conductive metal on the metal silicide. In operation, holes, indicative of electrical current on the electrical path, flow from the p-type mercury cadmium telluride layer to the electrically conductive metal.

Abstract: An active imaging system uses a MEMS Micro-Mirror Array to form and scan an optical beam over a first portion of scene within a first edge region of the field-of-view of the optical receiver in the direction of motion of the imaging system. In addition to tip and tilt control of the mirrors, the MMA may have piston control which can be used to minimize diffraction losses when focusing and scanning the beam, provide wavefront correction or to compensate for path length variations. The MMA may be partitioned into segments to independently form and scan a plurality of optical beams, which may be used to scan the first or different portions of the scene. The different segments may be provided with reflective coatings at different wavelengths to provide for multi-spectral imaging. The different segments may be used to combine multiple optical sources to increase power or provide multi-spectral illumination.

Abstract: A sabot including a first casing petal having at least one coupling feature and at least one disengagement feature; a second casing petal having at least one coupling feature and at least one disengagement feature; and a cap insertable within a forward receiver formed by coupling the first casing petal with the second casing petal, wherein the first casing petal and the second casing petal and the cap are configured to cooperatively attach to a forward assembly of a missile and cooperatively detach from the forward assembly of the missile responsive to a missile launch.