平行、非平行假设条件下目标测向方法研究

Target Direction Finding Methods Based on Parallel and Unparallel Hypothesis

为了研究干涉仪测向系统平行假设、非平行假设条件下目标测向方法,比较分析了2种条件下测向方法的系统误差和起伏误差。分析表明,平行假设中基线长度误差、相位差测量误差造成的测向误差与非平行假设的严格解基本相同,但方法误差较大,即使采用β角代替α角,误差可降低,但多数情况下,方法误差仍然无法容忍。因此,工程上建议采用非平行法的严格解。

System and random errors of target direction finding methods based on parallel and unpar- allel hypothesis are compared and analyzed to study interferometer direction finding system. The resuh shows that errors introduced by baseline length error and phase difference error for both parallel hypothesis and unparallel precise root are the same, but method error of the former is bigger. Even if β angle method is used, method error is not acceptable for most situations. Therefore, precise roots of unparallel hypothesis are advised in engineering application.