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This paper proposes an improved dual-threshold interference suppression (IS) algorithm for suppressing the narrow-band interference in the spread spectrum system. The proposed algorithm utilizes the spectral characteristics of direct sequence spread spectrum (DSSS) signal and BPSK modulation. It exploits the symmetry of PN-BPSK signal to obtain a better estimate of the spectrum and sets a limit threshold...
This paper concerns the development of a new approach to the simplification of representation of the spatial dimension of a large transmission network in order that the influences on bulk power transfers can be assessed in a practical way and the main routes that should be reinforced readily identified. The main challenge is to achieve a satisfactory clustering to deliver a number of zones that is...
Spaceborne/airborne hybrid bistatic SAR (SABSAR) has a special structure, its time synchronization system produces a great effect on the subsequent imaging processing. In view of the receiver, the impact of time synchronization errors is discussed in this paper, a time synchronization approach based on the direct signal is proposed. In this scenario, in order to compensate for time synchronization...
Spaceborne/airborne hybrid bistatic SAR(SABSAR) has a special structure, its time synchronization system produces a great effect on the subsequent imaging processing. In view of the receiver, the impact of time synchronization errors is discussed in this paper, a time synchronization approach based on the direct signal is proposed. In this scenario, in order to compensate for time synchronization...
Focusing on the issue of echo data acquire approach in bistatic SAR system. In this paper, the key technology of echo sampling window synchronization is introduced, the effect of echo sampling window synchronization error to the echo data and image performance are analyzed, an adaptive echo sampling window synchronization approach based on amplitude demodulation and phase compare is proposed, which...
Focusing on the issue of echo data acquire approach in bistatic SAR system. In this paper, the key technology of echo sampling window synchronization is introduced, the effect of echo sampling window synchronization error to the echo data and image performance are analyzed, an adaptive echo sampling window synchronization approach based on amplitude demodulation and phase compare is proposed, which...
Bistatic synthetic aperture radar (SAR) system separated its transmitter and receiver, the spatial separation mode provides many technical challenges. This paper addersses on the issue of antenna directing jitter error, the impact of antenna directing jitter including fast jitter and slow jitter are analyzed respectively. In the case of fast jitter, a generalized mathematic model is employed to analyze...
Distribution Network Operators (DNOs) in Britain are incentivised to reduce network losses. However, the scope for DNOs to respond positively to this is limited by the nature of legacy assets, their configuration, interactions with other incentives and the cost-effectiveness of possible actions. This paper considers one example from an urban network. The difficulty of building a realistic and complete...
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