System and method for estimating locations and range rates of a multiplicity of targets by estimating range-Doppler state representation, including: computing a prior range-Doppler state estimate matrix and a measurement matrix containing phase shifted and re-ordered samples of a transmitted signal waveform; applying the measurement matrix to the range-Doppler state estimate matrix to generate a prediction of a current return sample and calculating a difference between the current return signal sample and the prediction of the current return signal sample; multiplying the difference by a gain matrix to obtain an adjustment to the prior range-Doppler state estimate matrix; repeating the process for a next return signal; computing an estimated range-Doppler map (RDM); applying a threshold to the estimated RDM to detect individual targets and obtain their range and Doppler parameters; and using the range and Doppler parameters to estimate the locations and range rates of the targets.

The hazard warning system that included processing system for detecting a high altitude ice crystal (HAIC) condition. The aircraft warning system can use at least two types of radar returns to detect the HAIC condition. Warnings of high altitude ice crystal conditions can allow an aircraft to avoid threats posed by HAIC conditions including damage to aircraft equipment and engines.

In an embodiment of the disclosed technology, a visual output of data from a ground-penetrating radar and magnetic field measuring device is displayed on a visual medium. The display has a first exhibition of output from the ground-penetrating radar device and a second from a magnetic field measuring device, such as a very low frequency (VLF) receiver. Using an identical axis, such as an X-axis measuring time or distance, output of each device is exhibited and overlaid over one another. In this manner, one can detect (using two different methodologies and uses) the visual exhibition of both to best determine the location of a metal or electrical target.

A bicycle radar system including a camera is disclosed. The system may include a radar unit and a bicycle computing device that are in communication with one another. The radar unit may transmit radar signals, receive return signals (reflections), and process the returned radar signals to determine a location and velocity of one or more targets located in a sensor field behind a user's bicycle. The radar unit may also include an integrated camera to selectively provide images or video of an area behind the bicycle in the camera's field of view. The radar unit may analyze the returned radar signals and images and/or video to track the location of targets located behind the bicycle. The bicycle computing device or the radar unit may also selectively activate the camera based upon the satisfaction of particular conditions.

An aircraft weather radar system can include an electronic display, a radar antenna for receiving radar returns, and an electronic processor. The electronic processor can be configured to determine an existence of potential wind shear activity using the radar returns and cause the electronic display to provide an indication of the potential wind shear activity. The potential wind shear activity is different than a wind shear condition associated with a predictive wind shear icon for a wind shear event.

A radar or sonar system amplifies the signal received by an antenna of the radar system or a transducer of the sonar system is amplified and then subject to linear demodulation by a linear receiver. There may be an anti-aliasing filter and an analog-to-digital converter between the amplifier and the linear receiver. The system may also have a digital signal processor with a network stack running in the processor. That processor may also have a network interface media access controller, where the system operates at different ranges, the modulator may produce pulses of two pulse patterns differing in pulse duration and inter-pulse spacing, those pulse patterns are introduced and used to form two radar images with the two images being derived from data acquired in a duration not more than twenty times larger than the larger inter-pulse spacing, or for a radar system, larger than one half of the antenna resolution time. One or more look-up tables may be used to control the amplifier. The radar system may generate digital output which comprises greater than eight levels of radar video.

A method for indicating a weather threat to an aircraft is provided. The method includes inferring a weather threat to an aircraft and causing an image to be displayed on an aviation display in response to a determination by aircraft processing electronics that the inferred weather threat to the aircraft is greater than a measured weather threat to the aircraft.

A hazard warning system includes a processing system. The processing system determines a vertically integrated liquid (VIL) parameter. The processing system receives radar reflectivity data associated with an aircraft radar antenna and determines the VIL parameter by determining a first reflectivity value at a first altitude and a second reflectivity value at a second altitude using the radar reflectivity data. The processing system determines the VIL parameter using a base storm altitude and a top storm altitude.

An enhanced radar detector in one example displays a source direction of one more detected signals simultaneously with a frequency band of the detected signal. In another embodiment, a method detects a location of a false alert source to suppress alerts emanating from the location. A geographic location of a first mid-ship point of a detected radar signal in a vehicle traveling in a first direction are identified/recorded. The geographic location of a second mid-ship point of a detected signal is also identified/recorded in a vehicle traveling in a second different direction. The recorded geographic locations/directions of travel are uploaded to a host server, or evaluated within the radar detector, to identify a false source and mark a false source at an intersection of the first and second midlines. The marked false source location can be used in a detector and/or downloaded to multiple detectors via a social network.

A radar apparatus (1) for creating a radar image based on reflection waves caused by radio waves transmitted from an antenna, is provided. The radar apparatus (1) includes a receiver (3) configured to receive the reflection waves of the transmitted radio waves, as reception signals, a suppression processing module (9) configured to suppress levels of reflection signals among the reception signals, each of the reflection signals caused by precipitation, a precipitation reflection visualizing data creating module (15) configured to create data indicating, as a precipitation reflection visualized area (97), an area corresponding to the signals of which levels are suppressed to below a threshold by the suppression processing module (9), and a display image data creating module (16) configured to create display image data indicating on the radar image, the precipitation reflection visualized area (97) created by the precipitation reflection visualizing data creating module (15).