Passive radar source localisation based on PSAAA using single small size aircraft

Passive Radar Source Localization Based on Cuckoo Search NVTDOA

“…As shown in Figure 3, let Ψ j,i � t j, max − t i, max , where t i, max and t j, max are the peak times of G(t) of the ith and jth rotation period, respectively. In order to improve the estimation accuracy of NVTDOA, the estimation method of t i, max and t j, max in this paper is referred to [21], which will not be described here.…”

“…at is, the UAV receives only one radar signal at a time, and there is no signal aliasing. In order to verify the accuracy and effectiveness of the proposed algorithm, Hao's method in [21] is compared because Hao's method and the method in this paper both give the solution of the VTDOA localization algorithm. MSE (S 0 ) with different SNRs and PRFs is shown in Figure 4.…”

“…And the algorithm is applied to localization of UAV in urban scenarios, ground vehicles, emitters, and RF emitters. Based on this, Hao et al [21], Wan [14], and Zhu et al [22] put forward a radar radiation source localization method based on passive synthetic aperture antenna array.…”

“…e method utilizes the characteristics of a single-station small-load UAV in different positions at different times and the periodic rotation characteristics of radar pulse signals and uses VTDOA to complete the localization task. However, the observability of the localization model is not discussed, and the applicable conditions of the model are not analyzed in [14,21,22]. Moreover, it is assumed that the two radar signal waves received by the UAV are the same plane waves to obtain the closed solution of the positioning equation, and the radar rotation speed at the first received signal is used to calculate the radar antenna rotation time difference.…”

Passive localization of signal source based on wireless sensor network in the air

“…Okello and Musicki 22 proposed the method to accurately locate the pulse signal source such as the radar source, where the leading edge of the electromagnetic pulse is detected to estimate the time information in the ''association'' step using an EW support sensor loaded on a single UAV. To locate the radar source more precisely, we introduced the concept of passive synthetic aperture antenna array (PSAAA) to passively localize the hostile radar's position based on a single small-sized aircraft in Hao et al 23 Taking full advantage of the aircraft movement and the radar antenna circular rotation, an effective method is proposed to estimate the virtual time difference of arrival (VTDOA), while the PSAAA technology is unsuitable to passively localize the radio frequency (RF) signal source. It should be pointed out that the three methods mentioned above are exploited only about the radar source, which is unavailable for the continuous signal source.…”