The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Detection effectiveness of the airborne early warning radar is affected by its detection range as well as its detection probability. This paper presents a method for simulating and evaluating the detection effectiveness of the airborne early warning radar. Firstly, the detection model of the airborne early warning radar is designed. Secondly, based on the radar system parameter as well as the motion...
A micro-Doppler signal extraction method base on the combination of the CLEAN algorithm and the L-statistics algorithm is proposed. L-statistics algorithm is adapted to estimate the parameter of the local polynomial Fourier transform (LPFT) process. The LPFT process is used to compensate the bulk motion of the target. And then a CLEAN method is used to remove the fuselage echo. Comparing to the L-statistic...
Helicopter classification is still a challenging task for any radar system. This article covers research work about the problem of helicopter classification in time-domain with X-band ground surveillance radar. First, how to project the micro-Doppler characteristics of a helicopter to time-domain echo in a simple way are analyzed and discussed. Fortunately, the detection of invariability patterns...
In this paper, a micro-motion target detection approach behind an obstacle is presented using a stepped-frequency through-the-wall radar. First, the micro-motion target model is established, and the human movement includes periodical respiration and heart beating, as well as random body movement and sudden body shaking, which is close to the realistic human movement. Then the procedure of micro-motion...
This paper presents a synthetic aperture radar (SAR) imaging system using a stepped frequency waveform. The main problem in stepped frequency SAR is the range difference in one sequence of pulses. This paper analyzes the influence of range difference in one sequence of pulses in detail and proposes a method to compensate this influence in the Doppler domain. A Stolt interpolation for the stepped frequency...
This paper focuses on radar Doppler signatures of pedestrian. Firstly, an improved human walking model which describes a pedestrian as a linear-rigid target is introduced. Then radar echoes of the pedestrian under the condition of continuous wave (CW) radar signal are acquired, formulas of instantaneous Doppler are derived and movement signatures of the target are analyzed. Simulation experiments...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.